Mackie ProFXv3+ Series User manual

OWNER’S MANUAL
www.mackie.com
MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX,
USB RECORDING MODES, AND BLUETOOTH ™
SERIES

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
2
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water.
6. Clean only with a dry cloth.
7. Do not block any ventilation openings.
Install in accordance with the manufacturer’s instructions.
8. Minimum distance (5 cm) around the apparatus for sucient ventilation.
The ventilation should not be impeded by covering the ventilation openings
with items, such as newspapers, table-cloths, curtains, etc.
9. Do not install near any heat sources such as radiators, heat registers,
stoves, or other apparatus (including amplifiers) that produce heat.
10. No naked flame sources, such as lighted candles, should be placed on the apparatus.
11. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has
two blades with one wider than the other. A grounding-type plug has two blades and a third
grounding prong. The wide blade or the third prong are provided for your safety. If the provided
plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
12. Protect the power cord from being walked on or pinched particularly at plugs,
convenience receptacles, and the point where they exit from the apparatus.
13. Only use attachments/accessories specified by the manufacturer.
14. Use only with a cart, stand, tripod, bracket, or table specified
by the manufacturer, or sold with the apparatus. When a cart
is used, use caution when moving the cart/apparatus combination
to avoid injury from tip-over.
15. Unplug this apparatus during lightning storms or when unused
for long periods of time.
16. Refer all servicing to qualified service personnel. Servicing
is required when the apparatus has been damaged in any way,
such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen
into the apparatus, the apparatus has been exposed to rain or moisture, does not operate
normally, or has been dropped.
17. This apparatus shall not be exposed to dripping or splashing, and no object filled
with liquids, such as vases or beer glasses, shall be placed on the apparatus.
18. Do not overload wall outlets and extension cords as this can result in a risk of fire or electric
shock.
19. This apparatus has been designed with Class-I construction and must
be connected to a mains socket outlet with a protective earthing connection
(the third grounding prong).
PORTABLE CART
WARNING
CAUTION
The lightning flash with arrowhead symbol within an equilateral triangle
is intended to alert the user to the prescence of uninsulated “dangerous
voltage” within the product’s enclosure, that may be of significant
magnitude to constitute a risk of electric shock to persons.
RISK OF ELECTRIC SHOCK! DO NOT OPEN!
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT
REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED PERSONNEL.
The exclamation point within an equilateral triangle is intended
to alert the user of the prescence of important operating and
maintaining (servicing) instructions in the literature accompanying
the appliance.
Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan.
Apparatet stikprop skal tilsluttes en stikkontakt
med jord, som giver forbindelse til stikproppens jord.
Apparatet må tilkoples jordet stikkontakt.
Apparaten skall anslutas till jordat uttag.
20. This apparatus has been equipped with a rocker-style AC mains power switch.
This switch is located on the rear panel and should remain readily accessible to the user.
21. The MAINS plug or an appliance coupler is used as the disconnect device,
so the disconnect device shall remain readily operable.
22. The use of apparatus is in moderate climates.
23. This device should be installed and operated with minimum distance 20cm between
the radiator & your body.
The product can be sold in all EU countries.
Bluetooth transmitter Power: ≤8dBm
Bluetooth transmitter frequency range: 2.402 – 2.480 GHz
24. NOTE: This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instructions, may cause harmful interference to radio
communications.
However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment o and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and the receiver.
• Connect the equipment into an outlet on a circuit dierent
from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
CAUTION: Changes or modifications to this device not expressly approved by LOUD Audio,
LLC. could void the user’s authority to operate the equipment under FCC rules.
This device complies with Part 15 of the FCC rules and Industry Canada’s license-exempt
RSS standard(s). Operation is subjected to the following two conditions:
(1) This device may not cause harmful interference, and
(2) This device must accept any interference received, including interference
that may cause undesired operation.
25. This apparatus does not exceed the Class B limits for radio noise emissions from digital
apparatus as set out in the radio interference regulations of the Canadian Department
of Communications.
CAN ICES-003(B)/NMB-003(B)
ATTENTION
— Le présent appareil numérique n’émet pas de bruits radioélectriques
dépassant las limites applicables aux appareils numériques de class A/de class B
(selon le cas) prescrites dans le réglement sur le brouillage radioélectrique édicté
par les ministere des communications du Canada.
26. Exposure to extremely high noise levels may cause permanent hearing loss.
Individuals vary considerably in susceptibility to noise-induced hearing loss, but nearly
everyone will lose some hearing if exposed to suciently intense noise for a period
of time. The U.S. Government’s Occupational Safety and Health Administration (OSHA)
has specified the permissible noise level exposures shown in the following chart.
According to OSHA, any exposure in excess of these permissible limits could result in some
hearing loss. To ensure against potentially dangerous exposure to high sound pressure
levels, it is recommended that all persons exposed to equipment capable of producing high
sound pressure levels use hearing protectors while the equipment is in operation. Ear plugs
or protectors in the ear canals or over the ears must be worn when operating the equipment
in order to prevent permanent hearing loss if exposure is in excess of the limits set forth
here:
Duration, per
day in hours Sound Level dBA, Slow Response Typical Example
8 90 Duo in small club
6 92
4 95 Subway Train
3 97
2 100 Very loud classical music
1.5 102
1 105 Chaz screaming at Troy about deadlines
0.5 110
0.25 or less 115 Loudest parts at a rock concert
WARNING — To reduce the risk of fire or electric shock,
do not expose this apparatus to rain or moisture.
Correct disposal of this product: This symbol indicates that this product should not be disposed of with your household waste, according to the WEEE directive (2012/19/EU)
and your national law. This product should be handed over to an authorized collection site for recycling waste electrical and electronic equipment (EEE). Improper handling of
this type of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances that are generally associated with EEE.
At the same time, your cooperation in the correct disposal of this product will contribute to the eective usage of natural resources. For more information about where you can
drop o your waste equipment for recycling, please contact your local city oce, waste authority, or your household waste disposal service.

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
3
Table of Contents
Important Safety Instructions................................................................................................................................................................2
Table of Contents ......................................................................................................................................................................................3
Chapter  : Welcome..................................................................................................................................................................................6
Introduction................................................................................................................................................................................................6
Features .................................................................................................................................................................................................6
Things to Remember.................................................................................................................................................................................7
About This Guide .......................................................................................................................................................................................7
Getting Started..........................................................................................................................................................................................8
Chapter 2 : ProFXv3+ Rear Panel Features..........................................................................................................................................9
Introduction................................................................................................................................................................................................9
Power Connector [ProFX6v3+ and ProFX10v3+]................................................................................................................................9
Power Connector [ProFX12v3+]...........................................................................................................................................................10
Power Switch............................................................................................................................................................................................10
USB-C Computer Jack............................................................................................................................................................................10
Chapter 3 : ProFXv3+ Top Panel Features ...........................................................................................................................................1
Introduction...............................................................................................................................................................................................1
XLR and 1/4" Combo Input Jacks ..........................................................................................................................................................11
XLR Mic Input Jacks [ProFX10v3+ and ProFX12v3+] ......................................................................................................................12
1/4" Line Input Jacks [ProFX10v3+ and ProFX12v3+]...................................................................................................................... 12
1/4" Stereo Line Input Jacks.................................................................................................................................................................13
1/8" Stereo Line Input Jack...................................................................................................................................................................14
Line / Hi-Z Switches [Chs. 1 and 2]....................................................................................................................................................... 15
Low Cut Switches.................................................................................................................................................................................... 15
1/4" Insert Jacks [ProFX10v3+ and ProFX12v3+]............................................................................................................................. 16
Gain Knobs and Level Set LEDs ............................................................................................................................................................ 17
Compressor Knobs..................................................................................................................................................................................18
Channel Equalization (EQ) ....................................................................................................................................................................19
Aux Mon Knobs [ProFX12v3+]............................................................................................................................................................. 20
FX Knobs ...............................................................................................................................................................................................21
Pan Knobs ...............................................................................................................................................................................................21

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
4
Mute Switches [ProFX10v3+ and ProFX12v3+]................................................................................................................................ 22
Channel Level Knobs and Faders......................................................................................................................................................... 22
Assign Switches [ProFX12v3+] ........................................................................................................................................................... 23
PFL Solo Switches [ProFX12v3+]........................................................................................................................................................ 23
USB 3-4 Switch....................................................................................................................................................................................... 24
Bluetooth Switch.................................................................................................................................................................................... 24
FX Footswitch Jack [ProFX10v3+ and ProFX12v3+] ....................................................................................................................... 24
L/R Main Output Jacks.......................................................................................................................................................................... 25
1/4" Headphone Output Jack ............................................................................................................................................................... 26
1/4" Control Room Jacks [ProFX10v3+ and ProFX12v3+].............................................................................................................. 26
1/4" FX Send Jack [ProFX10v3+ and ProFX12v3+].......................................................................................................................... 27
1/4" Mon Send Jack [ProFX12v3+]..................................................................................................................................................... 27
1/4" Sub Out Jacks [ProFX12v3+]....................................................................................................................................................... 27
48V Phantom Power Switch.................................................................................................................................................................28
Power LED ..............................................................................................................................................................................................28
Main Meters............................................................................................................................................................................................28
Rude Solo [ProFX12v3+]....................................................................................................................................................................... 29
Aux Master Knobs [ProFX10v3+ and ProFX12v3+] ......................................................................................................................... 29
FX to Mon Knob [ProFX12v3+]............................................................................................................................................................. 30
FX Mute Switch....................................................................................................................................................................................... 30
To Phones / Control Room Switch....................................................................................................................................................... 30
Control Room Knob [ProFX10v3+ and ProFX12v3+]........................................................................................................................ 30
Phones Knob............................................................................................................................................................................................. 31
Blend Knob ............................................................................................................................................................................................... 31
FX Knob / Fader........................................................................................................................................................................................31
FX to Sub Switch [ProFX12v3+] ...........................................................................................................................................................31
Sub 1-2 Faders [ProFX12v3+]............................................................................................................................................................... 32
Sub 1-2 Assign Switch [ProFX12v3+] ................................................................................................................................................. 32
Sub 1-2 Mute Switch [ProFX12v3+].................................................................................................................................................... 32
Main Mix Knob / Fader........................................................................................................................................................................... 33
Main Mute / Break Switch.................................................................................................................................................................... 33
GIGFX+ Eects Engine .......................................................................................................................................................................... 34
Preset Display.................................................................................................................................................................... 34
Back Button........................................................................................................................................................................ 34
Factory Reset..................................................................................................................................................................... 34
FX Section .......................................................................................................................................................................... 35
Delay.................................................................................................................................................................................... 36
FX EQ................................................................................................................................................................................... 37
Delay Parameters and Values......................................................................................................................................... 38
Echo Parameters and Values.......................................................................................................................................... 39
Slapback Parameters and Values .................................................................................................................................. 39
FX Presets.......................................................................................................................................................................... 40
FX EQ Reset.........................................................................................................................................................................41
Hall Reverb Parameters and Values.............................................................................................................................. 42
Room Reverb Parameters and Values........................................................................................................................... 42
Plate Reverb Parameters and Values............................................................................................................................ 42
Chorus 1 Parameters and Values ................................................................................................................................... 43
Chorus 2 Parameters and Values .................................................................................................................................. 43
Flanger Parameters and Values..................................................................................................................................... 44
Delay + Reverb Parameters and Values........................................................................................................................ 45
Delay + Chorus Parameters and Values........................................................................................................................ 45
Reverb + Chorus Parameters and Values ..................................................................................................................... 46
Watering Parameters and Values.................................................................................................................................. 47
Recording Mode...................................................................................................................................................................................... 47

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
5
Hookup Diagrams................................................................................................................................................................................... 48
Hookup Diagrams > Typical Live Sound System..............................................................................................................................48
Hookup Diagrams > Typical Recording System................................................................................................................................49
Appendix A : Service Information........................................................................................................................................................ 50
Troubleshooting...................................................................................................................................................................................... 50
No Power............................................................................................................................................................................. 50
No Sound............................................................................................................................................................................. 50
Noise / Hum......................................................................................................................................................................... 51
Other Issues........................................................................................................................................................................ 51
Videos................................................................................................................................................................................... 51
Microphone Stand.................................................................................................................................................................................. 52
Repair .............................................................................................................................................................................................. 52
Appendix B : Technical Information.................................................................................................................................................... 53
Specifications......................................................................................................................................................................................... 53
Dimensions.............................................................................................................................................................................................. 57
Track Sheets............................................................................................................................................................................................ 58
Appendix C : USB 3/4 Return Setup.....................................................................................................................................................61
Introduction..............................................................................................................................................................................................61
Windows ...............................................................................................................................................................................................61
Mac ...............................................................................................................................................................................................61
Warranty Statement.............................................................................................................................................................................. 62
Fin ........................................................................................................................................................................................... 63

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
6
Chapter  : Welcome
Introduction
Hello everyone! This is the ProFXv3+ Series Owner’s Manual. This document contains detailed information
about the ProFXv3+ Series... we hope you like it!
Stream. Record. Create.
Mackie ProFXv3+ is a professional analog mixer and USB-C audio interface with powerful enhancements for studio-quality
recordings and live streams.
Capture your performance with award-winning Onyx preamps, channel EQ and analog compression.
Upgraded GigFX+ eects enhance your sound, plus you can edit and save your presets on the fly via the full-color display.
Switch between recording modes to track dry or include the FX, or use loopback mode to stream video games or perform
over backing tracks without feedback.
You can even bring in podcast guests over the phone via Bluetooth® on a dedicated channel.
With easy connectivity, the warmth of analog and an upgraded FX engine, Mackie ProFXv3+ is the perfect centerpiece
for your studio.
So there you have it. Again, we hope you like it. If you have any questions or comments about this Owner’s Manual
(or other Mackie documentation), please don’t hesitate to contact us:
• -800-898-32 (Monday through Friday, normal business hours, Pacific Time)
• www.mackie.com/support-contact
Features
• 2 Onyx mic pres with up to 60 dB of gain and ultra-low noise performance [ProFX6v3+]
• 4 Onyx mic pres with up to 60 dB of gain and ultra-low noise performance [ProFX10v3+]
• 7 Onyx mic pres with up to 60 dB of gain and ultra-low noise performance [ProFX12v3+]
• High-resolution GigFX+™ eects engine
• Full-color LCD display for editing and saving eects presets
• 24-Bit / 192 kHz 2x4 USB-C audio interface
• Three recording modes: Standard, Loopback and Interface
• Bi-directional Bluetooth® for music playback and caller integration
• 2-band EQ on channels 1 and 2 [ProFX6v3+]
• 3-band EQ on all channels [ProFX10v3+ and ProFX12v3+]
• One-button compression on channels 1 and 2 [ProFX6v3+]
• One-knob compression on channels 1 and 2 [ProFX10v3+]
• One-knob compression on channels 1–4 [ProFX12v3+]
• Hi-Z switches allow direct connection of instruments
• 100 Hz low-cut filter and 48V phantom power on all mic channels
• Stereo 1/8” input
• Separate FX, monitor and subgroup busses [ProFX12v3+]

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
7
• Headphone output with separate level and blend control
• Easily blend between monitoring your computer output and a latency-free feed from the mixer
• Waveform OEM™ recording sofware Included
• Legendary Built-Like-A-Tank design
• Solid steel chassis
• Tough ABS side protection
Things to Remember
• Never listen to loud music for prolonged periods.
Please see the Safety Instructions on page 2 for information on hearing protection.
• As a general guide, the ProFXv3+ should be turned on first, subwoofers next, and the loudspeakers last.
As such, the loudspeakers should also be turned o first, followed by the subwoofers, then the ProFXv3+.
This will reduce the possibility of any turn-on or turn-o thumps and other noises generated by any upstream
equipment from coming out of the speakers.
• Save the shipping boxes and packing materials! You may need them someday. Besides, the cats will love playing
in them and jumping out at you unexpectedly. Remember to pretend like you are surprised!
• Save your sales receipt in a safe place.
About This Guide
This guide is designed to be accessible, with subsections as complete as practical to minimize having to electronically leaf
back and forth looking for the whole story. The entire guide does not need to be read to figure out how to use this console.
As the saying goes, “a picture tells a 000 words”. With that thought in mind, we added quite a few illustrations, screenshots
and other images throughout to accompany the text.
This icon marks information that is critically important or unique! For your own good, read and remember
them.
There’s an illustration of a microscope, so, of course, you’re going to get more detailed information
when you see this little guy. There are explanations of features and practical tips listed here.
It’s a good idea to pay attention to text displayed next to a note icon, as this icon draws attention
to certain features and functions relating to the usage of ProFXv3+.

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
8
Getting Started
The following steps will help you set up the ProFXv3+ quickly. If you desire a more thorough walk-through of ProFXv3+,
there is a wealth of information in the following pages!
. Read and understand the Important Safety Instructions on page 2.
2. Turn down all knobs except the channel EQ and pan knobs, and set all the faders fully down.
3. Set all channel EQ knobs and pan knobs at their center detent.
4. Disengage all switches.
5. Connect cords from the main outs to powered speakers (or to an amplifier connected to passive speakers).
6. Push the line cord securely into the mixer’s connector and plug the other end into a grounded AC outlet.
The mixer may accept the appropriate voltage as indicated near the connector.
7. Turn the mixer on.
8. Turn the powered speakers (or amplifiers) on.
9. Plug signal sources into the mixer, such as:
• Microphones plugged into the mic inputs. (Engage phantom power if needed.)
• Instrument level sources, such as acoustic guitars w/active pickups into the instrument inputs
• Line-level sources such as keyboards, drum machines, or CD players plugged into the line-level inputs.
• Smartphone paired and connected via Bluetooth.
0. Be sure that the volume of the input is the same as it would be during normal use.
. Engage the channel’s L-R assign switch (ProFX2v3+) and turn up that channel’s fader to the “U” (unity gain) position.
2. Slowly bring up the main fader to a comfortable listening level.
3. Repeat steps 9 to  for the other channels.

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
9
Chapter 2 : ProFXv3+ Rear Panel Features
Introduction
The top panel of each ProFXv3+ mixer may be where the magic all happens,
but nothing will happen if it can’t be powered up, so let’s start there! The rear panel
of each ProFXv3+ mixer is oufitted with a power connector, power switch, and a USB-C
port for connecting to a computer. Let’s take a look at each of these features, starting
with the power connector and power switch, followed by a look at the USB-C port.
Power Connector [ProFX6v3+ and ProFX10v3+]
Each ProFX6v3+ and ProFX10v3+ has a universal external power supply that accepts
any AC voltage ranging from 00 VAC to 240 VAC. No need for voltage select switches.
It will work virtually anywhere in the world. That’s why we call it a “Planet Earth” power
supply! It is less susceptible to voltage sags or spikes compared to conventional power
supplies, and provides greater electromagnetic isolation and better protection
against AC line noise.
An external 2 VDC power supply [aka The Power Block] and a line cord are included
with the ProFXv3+ mixer. A locking barrel connector resides at the end of the cord
attached to The Power Block. Attach it to the power connector on the ProFXv3+ mixer
and rotate the outer ring clockwise to lock. Do not over-tighten! Screw until there
is resistance, then stop. Connect the female end of the line cord to The Power Block
and plug the male end into a live grounded outlet. An LED on The Power Block
will illuminate green to indicate success (whether the ProFXv3+ mixer is powered
on or not).
Warning: Disconnecting the plug’s ground pin is dangerous. Don’t do it!
In fact, it’s a bad idea to remove anything from (or add anything to)
The Power Block or line cord. Again, don’t do it!
ProFX12v3+ProFX6v3+ and ProFX10v3+
The
Power
Block
Barrel Connector
Locking Outer Ring

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
0
Power Connector [ProFX12v3+]
This is a standard 3-prong IEC power connector. Connect the detachable power cord (included in the packaging
with the ProFX12v3+) to the power receptacle, and plug the other end of the power cord into an AC outlet.
Make sure that the AC power is matched to the AC power indicated on the rear panel (near the IEC receptacle).
Warning: Disconnecting the plug’s ground pin is dangerous. Don’t do it!
Power Switch
Located next to the power connector is the power switch. Press the top of this rocker switch in to turn the ProFXv3+ mixer
on and press the bottom of this switch in to turn it o.
As a general guide, the ProFXv3+ should be turned on first, followed by external power amplifiers or powered
speakers. As such, the ProFXv3+ should also be turned o last. This will reduce the possibility of any turn-on
or turn-o thumps in the PA.
USB-C Computer Jack
This is a 2x4 interface that allows audio to stream to and from the ProFXv3+ mixer via computer.
Connect the USB-C side of a USB cable to the ProFXv3+ mixer and the USB-A side to the computer’s USB port.
Don’t forget to change the input and output to ‘ProFXv3+’ via Settings on your computer.
ProFXv3+’s USB connection is audio only. It is not a source of power.

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®

Chapter 3 : ProFXv3+ Top Panel Features
Introduction
From top to bottom and lef to right, the top panel of each ProFXv3+ mixer is oufitted with a bunch of knobs, buttons, faders,
jacks, screens, and more. So much more, in fact, that we will call out and describe each one...
XLR and /4" Combo Input Jacks
The first two input channels may accept a balanced mic or line-level signal using an XLR connector.
They are wired as follows, according to standards specified by the AES (Audio Engineering Society).
XLR Balanced Wiring:
Pin  = Shield (ground)
Pin 2 = Positive (+ or hot)
Pin 3 = Negative (– or cold)
In addition to accepting balanced mic or line-level signals using an XLR connector, these inputs may also accept /4" line-level
signals driven by balanced or unbalanced sources.
To connect balanced lines to these inputs, use a /4" Tip-Ring-Sleeve (TRS) plug. “TRS” stands for Tip-Ring-Sleeve, the three
connection points available on a stereo /4" or balanced phone jack or plug. TRS jacks and plugs are used for balanced signals
and stereo headphones and are wired as follows:
/4" TRS Balanced Mono Wiring:
Sleeve = Shield
Tip = Hot (+)
Ring = Cold (–)
To connect unbalanced lines to these inputs, use a /4" mono (TS) phone plug, wired as follows:
/4" TS Unbalanced Mono Wiring:
Sleeve = Shield
Tip = Hot (+)
2
31
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
2
1
SLEEVE
TIPSLEEVE
TIP
RING
RING
TIP
SLEEVERING
SLEEVE
TIP
TIPSLEEVE
TIP
SLEEVE

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
2
XLR Mic Input Jacks [ProFX10v3+ and ProFX12v3+]
This is a female XLR connector that accepts a balanced mic or line level input from almost any type of source.
These mic preamps feature higher fidelity and headroom rivaling any standalone mic preamp on the market today.
These circuits are excellent at rejecting hum and noise.
Professional ribbon, dynamic, and condenser mics all sound excellent through these inputs. The mic / line inputs will handle
any kind of level you can toss at them, without overloading. The wiring diagrams are presented on the previous page.
NEVER connect the output of an amplifier directly to a ProFXv3+ mixer’s input jack.
This could damage the input circuitry and we wouldn’t want that now, would we?
As seen in the pictures above, the ProFX10v3+ has two XLR mic input jacks (on channels 3 and 4),
while the ProFX12v3+ boasts a mighty five XLR mic input jacks (on channels 3 and 4, 5/6, 7/8 and 9/10).
There are no XLR mic input jacks on the ProFX6v3+ (other than the first two channel combo input jacks).
/4" Line Input Jacks [ProFX10v3+ and ProFX12v3+]
These /4" jacks share circuitry (but not phantom power) with the mic preamps, and can be driven by balanced
or unbalanced sources at almost any level. You can use these inputs for virtually any signal you’ll come across.
To connect balanced lines to these outputs, use a /4" Tip-Ring-Sleeve (TRS) plug. “TRS” stands for Tip-Ring-Sleeve,
the three connection points available on a stereo /4" or balanced phone jack or plug. The wiring diagrams are presented
on the previous page.
NEVER connect the output of an amplifier directly to a ProFXv3+ mixer’s input jack.
This could damage the input circuitry and we wouldn’t want that now, would we?
As seen in the pictures above, both the ProFX10v3+ and ProFX12v3+ have two 1/4" line input jacks
(on channels 3 and 4). There are no 1/4" input jacks on the ProFX6v3+ (other than the first two
channel combo input jacks).
ProFX10v3+ ProFX12v3+
ProFX10v3+ ProFX12v3+

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
3
/4" Stereo Line Input Jacks
The stereo line inputs are designed for /4" TRS balanced or /4" TS unbalanced signals.
They may accept any line-level instrument, eects device, CD player, etc.
If you are connecting a mono source, use the lef (mono) input, and the mono signals will appear on both sides of the main mix.
To connect balanced lines to these inputs, use a /4" Tip-Ring-Sleeve (TRS) plug. To connect unbalanced lines
to these inputs, use a /4" mono (TS) phone plug. The wiring diagrams were presented two pages ago.
NEVER connect the output of an amplifier directly to a ProFXv3+ mixer’s input jack.
This could damage the input circuitry and we wouldn’t want that now, would we?
As seen in the pictures above, the ProFX6v3+ has one pair of 1/4" stereo line input jacks (on channels 3/4),
the ProFX10v3+ has two pairs of 1/4" stereo line input jacks (on channels 5/6 and 7/8), and the ProFX12v3+
has three pairs of 1/4" stereo line input jacks (on channels 5/6, 7/8 and 9/10).
ProFX10v3+ProFX6v3+ ProFX12v3+

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
4
/8" Stereo Line Input Jack
This /8" stereo input may accept a stereo or mono line-level signal from a smartphone, tablet, MP3 player, CD player
or other signal source.
It is wired as follows, according to standards specified by the AES (Audio Engineering Society):
Stereo /8" TRS
Sleeve = Shield (Ground)
Tip = Lef Channel
Ring = Right Channel
While the volume may be raised and lowered via the ProFXv3+ mixer, the volume of the device also needs to be up.
As seen in the pictures above, all ProFXv3+ mixers come with a single 1/8" stereo line input jack.
It is stereo channels 5/6 on the ProFX6v3+, 9/10 on the ProFX10v3+ and 11/12 on the ProFX12v3+.
ProFX10v3+ProFX6v3+ ProFX12v3+

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
5
Line / Hi-Z Switches [Chs. 1 and 2]
To connect a guitar or bass directly to the mixer without using a DI Box, press this switch in first; then connect the output
from the instrument to the channel’s /4" TRS input. The input impedance is optimized for direct connection and high-frequency
fidelity is assured.
In the out position, the channel’s /4" TRS input becomes a line input just like the other mono line inputs.
To use guitars or other instruments on other channels, you will need to use an external DI box first.
Without the DI box – or if this switch is not pressed in – guitars may sound dull and muddy.
Low Cut Switches
All channels with a mic input have a low-cut switch (ofen referred to as a high-pass filter) that cuts bass frequencies
below 00 Hz at a rate of 8 dB per octave.
We recommend that you use low-cut on every microphone application except kick drum, bass guitar, or bassy synth patches.
These aside, there isn’t much down there that you want to hear, and filtering it out makes the low stu you do want much more
crisp and tasty. Not only that, but low-cut can help reduce the possibility of feedback in live situations, and it helps to conserve
amplifier power.
Another way to consider low-cut’s function is that it actually adds flexibility during live performances.
With the addition of low-cut, you can safely use low equalization on vocals. Many times, bass shelving
EQ can really benefit voices. Trouble is, adding low EQ also boosts stage rumble, mic handling clunks
and breath pops from way-down low. Applying low-cut removes all those problems, so you can add
low EQ without blowing the woofers.
As seen in the pictures above, the ProFX6v3+ has two low cut switches, the ProFX10v3+ doubles
that number with four low cut switches, and the ProFX12v3+ has a whopping seven low cut switches.
ProFX12v3+
ProFX10v3+
ProFX6v3+

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
6
/4" Insert Jacks [ProFX10v3+ and ProFX12v3+]
These unbalanced /4" jacks are for connecting serial eects processors such as compressors, equalizers, de-essers, or filters.
The insert point is afer the gain control and low cut filter, but before the channel’s EQ and level. The channel signal can go out
of the insert jack to an external device, be processed and come back in on the same insert jack.
To do this requires a standard insert cable that must be wired thusly:
Tip = send (output to eects device)
Ring = return (input from eects device)
Sleeve = common ground
Insert jacks may be used as channel direct outputs; post-gain, and pre-EQ. If you insert a TS (mono) /4" plug only partially
(to the first click) into an insert jack, the plug will not activate the jack switch and will not open the insert loop in the circuit
(thereby allowing the channel signal to continue on its merry way through the mixer). This allows you to tap out the channel
signal without interrupting normal operation.
If you push the /4" TS plug in to the second click, you will open the jack switch and create a direct out, which does interrupt
the signal in that channel. See illustration below.
Do not overload or short-circuit the signal you are tapping from the mixer. That will aect the internal signal.
As seen in the pictures above, both the ProFX10v3+ and ProFX12v3+ have four 1/4" insert jacks (on channels 1-4).
There are no 1/4" insert jacks on the ProFX6v3+.
tip
This plug connects to one of
the mixer’s channel insert jacks.
ring
tip ring sleeve
SEND to processor
RETURN from processor
(TRS plug)
Direct out with no signal interruption to master.
Insert only to first “click.”
Channel Insert jack
Channel Insert jack
Channel Insert jack
Direct out with signal interruption to master.
Insert all the way in to the second “click.”
For use as an eects loop.
(TIP = SEND to eect, RING = RETURN from eect.)
MONO PLUG
MONO PLUG
STEREO
PLUG

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
7
Gain Knobs and Level Set LEDs
“U” like Unity Gain
ProFXv3+ Series mixers have a “U” symbol on many level controls. It stands for “unity gain,” meaning no change in signal level.
The labels on the controls are measured in decibels (dB), so you’ll know what you’re doing level-wise if you choose to change
a control’s settings.
If you haven’t already, please read the “Getting Started” section on page 8. Setting the gain correctly will ensure
that the preamplifier’s gain is not too high, where distortion could occur, and not too low, where the quieter,
exquisitely-delicate passages might be lost in background noise.
The gain knobs – in conjunction with the level set LEDs – adjust the input sensitivity of the mic and line inputs.
This allows signals from the outside world to be adjusted to run through each channel at optimal internal operating levels.
For mono channels (mic input with a mono line input), the gain knob adjusts the input sensitivity of the mic and line inputs.
If the signal originates through the mic XLR jack, there will be 0 dB of gain with the knob fully down, ramping to 60 dB
of gain fully up.
Through the /4" mono line inputs, there is –20 dB of attenuation fully down and 40 dB of gain fully up, with unity gain
“U” at 2:00.
This 20 dB of attenuation can be very handy when you are inserting a hot signal, or when you want to add EQ gain, or both.
Without this “virtual pad,” there is more chance of channel clipping.
For hybrid channels (mic input and stereo line input), the gain control just aects the microphone input.
Hybrid Channels:
• ProFX12v3+ – Channels 5/6, 7/8, 9/10
Only the ProFX12v3+ has hybrid channels.
The gain control on the /8" stereo input channel has 20 dB of gain and 20 dB of attenuation.
/8" Stereo Channels:
• ProFX12v3+ – Channels 11/12
While all ProFXv3+ mixers are blessed with an 1/8" stereo line input jack, only the ProFX12v3+ has a gain knob
associated with it.
ProFX12v3+
ProFX10v3+
ProFX6v3+
GAIN
U
-20dB +40dB
+60
GAIN
U+60dB
M
I
C
G
A
I
N
GAIN
-20dB +20dB
U

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
8
Next to every gain knob – except the /8" stereo input gain knob – lies a level set LED. These LEDs are used with the gain control
to set the channel preamplifier gain just right for each source. If one or more channels are distorting, check the level set LEDs.
If they are on continuously, turn down the gain.
Compressor Knobs
The following channels of each ProFXv3+ mixer has an in-line compressor circuit with a variable threshold.
• ProFX6v3+ – On/O compressor switches
• ProFX0v3+ – Channels –2
• ProFX2v3+ – Channels –4
This is very useful for compression of vocals, and snare drums, for example, so you might consider connecting
your vocal and drum mics to these channels, rather than one of the other channels.
When the incoming signal exceeds the threshold level set by this knob, the signal level is automatically compressed.
This reduces the dynamic range and reduces the chance of distortion due to overloading the input signals.
Dynamic range is the dierence in level between the quietest and loudest parts of a song. A compressor
“squeezes” the dynamic range, resulting in an overall steadier, more constant volume level for the signal.
It helps sources, such as vocals, “sit” properly in the mix; it is very useful for live sound.
The compression ratio is fixed at around 6:, with a sof knee response. The threshold can be adjusted clockwise
from o (no compression) to 0 dBu (max).
As an example, suppose the threshold is set to maximum.
An incoming signal reaches the threshold of 0 dBu.
As it increases beyond the threshold, it becomes
compressed at a ratio of 6:. This means that even
if the input further increases by 6 dB, the actual output
only increases by  dB. This compresses the output
signal, so there is more protection to your system
from distortion and overload due to poor microphone
technique (say it ain’t so) and general pops, bangs
and heavy metal screaming. The sof knee means
that the compression slowly ramps up to 6: from the
threshold. It does not jump abruptly to 6:, as this would
be hard knee compression, and harder on the ears too.
The graph to the lef displays the input signal level going
into the compressor, versus the output level coming
out of it. It is the typical graph to view when compressors
are discussed, and is just the kind of thing our engineers
like to discuss during the company Christmas party.
If the compressor is o, then the input = output. For example, an input signal level of +5 dBu results in an output level of +5 dBu.
The diagonal line from lower lef to upper right represents x = y, that is, input = output.
At the maximum compression, the threshold is set at 0 dBu, and the input to output relationship is represented by the lower
curve. If the input is –5 dBu (that is, below the threshold), the output is –5 dBu. As the input reaches 0 dBu, the output is a bit
less than 0 dBu. If the input is +5 dBu, the output is about +2 dBu. If the input reaches +0 dBu, then the output is +3 dBu. Notice
the shapely curve of the sof knee between the diagonal slope of x = y and the compressor slope of 6: (the compression ratio).
1My High School math teacher, Mr. Marvin, thought that graphs might come in handy for me one day. Finally!
ProFX12v3+ProFX6v3+ ProFX10v3+
+20
-10
-5
+0
+5
+10
+15
+20-10 -5 +0
SLOPE 6:1
SOFT KNEE
SLOPE 1:1
+5 +10 +15
INPUT SIGNAL STRENGTH dBu
OUTPUT SIGNAL STRENGTH dBu

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
9
The other green curves represent in-between positions of the compressor knob, with higher thresholds before compression
begins.
Outboard compressors ofen have controls such as compression ratio, threshold, sof knee/hard knee, attack time,
and release time. These last two aect how quickly the compressor kicks in when the input exceeds the threshold,
and how quickly it is released afer it drops below the threshold. In this compressor, these parameters are specially
chosen to give you the best overall performance.
Adjust the threshold carefully, so your dynamic range is still lovely, without distortion or overload during the performance.
Run through a few practice screams and high-notes, and adjust the compression as required.
While the compressor on the ProFX10v3+ and ProFX12v3+ both have a variable threshold, the ProFX6v3+
has an easy on/o switch.
Channel Equalization (EQ)
ProFX10v3+ and ProFX12v3+ mixers have 3-band EQ with shelving hi, peaking mid, and shelving low, while the ProFX6v3+
has shelving hi and low EQ knobs. The 3-band equalization has low shelving at 80 Hz, mid peaking at 2.5 kHz, and high
shelving at 2 kHz.
Shelving means that the circuitry boosts or cuts all frequencies past the specified frequency. For example, the low EQ boosts
bass frequencies below 80 Hz and continuing down to the lowest note you never heard. Peaking means that certain frequencies
form a “hill” around the center frequency.
With too much EQ, you can really upset things. We’ve designed a lot of boost and cut into each equalizer circuit
because we know that everyone will occasionally need that. But if you max the EQ on every channel, you’ll get mix
mush. Equalize subtly and use the lef sides of the knobs (cut), as well as the right (boost). If you find yourself
repeatedly using a lot of boost or cut, consider altering the sound source, such as placing a mic dierently, trying
a dierent kind of mic, a dierent vocalist, changing the strings, or gargling.
The EQ circuits are based upon the designs of Cal Perkins, an industry-leader in audio engineering for over four decades
and a long-time collaborator. This “neo-classic” design provides the sweet musicality of the British EQ sound, while still
maintaining 5 dB of boost and cut with optimum Q and minimum phase shif (in other words, it gives you plenty of control
and is pleasing to the ear!).
Hi EQ Knobs
The hi EQ provides up to 5 dB of boost or cut above 2 kHz, and it is also flat (no boost or cut)
at the detent. Use it to add sizzle to cymbals, an overall sense of transparency, or an edge
to keyboards, vocals, guitar and bacon frying. Turn it down a little to reduce sibilance
or to mask tape hiss.
ProFX10v3+ & ProFX12v3+ProFX6v3+
+15
+5
0
+10
–15
20 Hz 100 Hz 1 kHz 10 k 20 k
–5
–
10

PROFXV3+ MULTI-CHANNEL ANALOG MIXERS WITH ENHANCED FX, USB RECORDING MODES, AND BLUETOOTH®
20
Mid EQ Knobs
Short for “midrange,” this knob provides up to 5 dB of boost or cut, centered at 2.5 kHz,
also flat at the center detent. Midrange EQ is ofen thought of as the most dynamic, because
the frequencies that define any particular sound are almost always found in this range.
You can create many interesting and useful EQ changes by turning this knob down as well as up.
Low EQ Knobs
The low EQ provides up to 5 dB of boost or cut below 80 Hz. The circuit is flat at the center
detent position. This frequency represents the punch in bass drums, bass guitar, fat synth
patches, and some really serious male singers who eat raw beef for breakfast.
Aux Mon Knobs [ProFX12v3+]
These knobs tap a portion of each channel’s signal to set up a nice monitor mix feeding stage monitors, independent of the main
mix. Adjust these controls on each channel until the band is happy with the stage monitor mix.
The controls are o when fully turned down, deliver unity gain at the center detent, and can provide up to 0 dB of gain turned
fully up.
The pan and channel fader do not aect the monitor output, but the other channel controls will. The aux mon is pre-fader.
The overall output level may be adjusted with the master mon control. Both the channel aux mon knobs and master aux mon
knob are colored green. Internal FX may also be added to the monitor mix with the FX to mon master knob.
As seen in the picture above, the ProFX12v3+ has eight aux mon knobs.
There are no aux mon knobs on the ProFX6v3+ and ProFX10v3+.
+
15
+5
0
+
10
–
15
20 Hz 100 Hz 1 kHz 10 k 20 k
–5
–
10
+
15
+5
0
+
10
–
15
20 Hz 100 Hz 1 kHz 10 k 20 k
–5
–
10