Rolls MX410 User manual

MX410
Field Mixer
Quick Start Guide
ROLLS CORPORATION
SALT LAKE CITY, UTAH
10/09
+20
+20+20 +20
1234
LEVEL LEVEL LEVEL LEVEL LEVEL
R
LR
LR LR L
left
right
MX410
HEADPHONE
ENG MIXER
AUX
INPUT
MIC
LINE
+
-
CHANNEL
1
CHANNEL
2
CHANNEL
3
CHANNEL
4
BATTERIES
9V x 2
LEFT
RIGHT
Phantom
LowCut
Phantom
LowCut
Phantom
LowCut
Phantom
LowCut
SOUND MAN
Four Channel Stereo
Field Mixer
MADE IN USA
PhanPwr ON=dwn
LowCut ON=up
INPUTS OUTPUTS
MX410
POWER
OFF- ON
www.rolls.com
3.5mm
PWR
CC
C
C
AUX
INPUT
MIC
LINE
+
-
CHANNEL
1
CHANNEL
2
CHANNEL
3
CHANNEL
4
BATTERIES
9V x 2
LEFT
RIGHT
Phantom
LowCut
Phantom
LowCut
Phantom
LowCut
Phantom
LowCut
SOUND MAN
Four Channel Stereo
Field Mixer
MADE IN USA
PhanPwr ON=dwn
LowCut ON=up
INPUTS OUTPUTS
MX410
POWER
OFF- ON
www.rolls.com
3.5mm
PUSH PUSH PUSH PUSH
ROLLS CORPORATION
5968 South 350 West
Salt Lake City, UT 84107
Phone [phone]
FAX [phone]
www.rolls.com
NOTE: THIS MANUAL ASSUMES THE USER HAS A WORKING KNOWLEDGE OF
AUDIO ELECTRONICS, BALANCED AND UNBALANCED CONNECTIONS, AND
PROPER SIGNAL LEVEL SETTINGS. FOR PROPER SETUP AND USE CONTACT
YOUR DEALER.
SCHEMATIC

INTRODUCTION
Thank your for your purchase of the Rolls MX410 Field Mixer; Professional ENG
mixer. Please read and review this manual carefully as it contains important
information regarding the proper use and care of the MX410.
INSPECTION
1. Unpack and inspect the MX410 box and package.
If obvious physical damage is noticed, contact the carrier immediately to make a
damage claim. We suggest saving the shipping carton and packing materials for
safely transporting the unit in the future.
2. Please visit our web site at www.rolls.com and click on the Register Your
Warranty Here button.
www.rolls.com
Input Impedance: Mic: 600 Ohms XLR balanced
Output Attenuator: -30 dB
Self Noise: -65 dB maximum
-90 dB typical
Max Gain: +55 db
S/N Ratio: 115 dB
THD: .05%
Frequency Response: 20 Hz - 20 kHz | +0, -3 dB
Low Cut: 100 Hz
Max Input: -20 dBV
Current Draw: 30 mA with no Phantom Power or Signal.
Phantom Power: +18 VDC
Typical Battery Life: 18 Hrs. (2 mics, phan on, with headphone)
Connectors: 4 ea. Female XLR, 2 ea. Male XLR,
3 ea. 1/8”(3.5mm), 1 Center Negative power jack.
Power Adapter: 12VDC / 200 mA
Size: 9”W x 6.75”D x 1.5”H
Weight: 2.45 lbs
www.rolls.com page 6
page 1
LOW-CUT FILTERS
Each channel of the MX410 features a switchable Low-Cut filter set at 100Hz.
These Low-Cut filters (sometimes called “High Pass”) cut frequencies below
100Hz signal and are effective for reducing wind noise. For several audio appli-
cations engaging the Low-Cut filter is beneficial, since little usable audio informa-
tion exists below 100 Hz. Especially for speech recording.
PHANTOM POWER
The MX410 can provide up to 10 mA of current to each input, sufficient for the
most power-hungry condenser microphones. The MX410 Phantom Power utilizes
a fixed DC voltage which is resistively applied to pin-2 and pin-3 of an XLR input
connector relative to pin-1 (there is no voltage difference between the signal on
pins 2 and 3; a dynamic microphone may or may not operate normally in the
presence of phantom power).
It is generally a good practice to turn off phantom powering when not using a
condenser microphone, as it can capacitively couple noise into the mic inputs
with poor mic cables. Also, be sure to turn off phantom powering when using rib-
bon microphones since an improperly wired cable can permanently damage the
microphone.
OPERATION AND SET UP CONT.
SPECIFICATIONS
+20
+20+20 +20
1234
LEVEL LEVEL LEVEL LEVEL LEVEL
R
LR
LR LR L
left
right
MX410
HEADPHONE ENG MIXER
AUX
INPUT
MIC
LINE
+
-
CHANNEL
1
CHANNEL
2
CHANNEL
3
CHANNEL
4
BATTERIES
9V x 2
LEFT
RIGHT
Phantom
LowCut
Phantom
LowCut
Phantom
LowCut
Phantom
LowCut
SOUND MAN
Four Channel Stereo
Field Mixer
MADE IN USA
PhanPwr ON=dwn
LowCut ON=up
INPUTS OUTPUTS
MX410
POWER
OFF- ON
www.rolls.com
3.5mm
PWR
CC
C
C
AUX
INPUT
MIC
LINE
+
-
CHANNEL
1
CHANNEL
2
CHANNEL
3
CHANNEL
4
BATTERIES
9V x 2
LEFT
RIGHT
Phantom
LowCut
Phantom
LowCut
Phantom
LowCut
Phantom
LowCut
SOUND MAN
Four Channel Stereo
Field Mixer
MADE IN USA
PhanPwr ON=dwn
LowCut ON=up
INPUTS OUTPUTS
MX410
POWER
OFF- ON
www.rolls.com
3.5mm
PUSH PUSH PUSH PUSH
Trouble shooting: The MX410 is designed to be an easy to use full func-
tion mixer. PLEASE MAKE SURE THAT THE REAR MIC/LINE
SWITCH IS IN THE CORRECT POSITION FOR YOUR INTENDED
USE.

www.rolls.comwww.rolls.com
FEATURES
- Four balanced XLR Inputs
- Two transformer-balanced XLR Outputs
- Switchable Output Level ( Line level, or Mic level)
- 1/8” TRS Stereo Auxiliary Input
- Switchable Phantom Power for each input
- Switchable 100 Hz Low Cut filters for each input
- Dual 9V easy access Battery compartment
- Level controls for each channel
- 1/8”(3.5mm) Headphone/Earphone Output with Level control
- 18 hour battery life (with 2 condenser mics using phantom power and head
phones attached, constant use).
- Rolls PS27 external power supply included
QUICK START GUIDE
For those familiar with ENG or field mixers, this guide highlights basic functionality to
begin operating your MX410.
page 5 page 2
POWERING
To power the MX410 and get it ready for operation:
1. Insert - 2, 9-Volt, alkaline batteries into the battery compartments. Insert with the correct
polarity.
Or, connect external DC power (the Rolls PS27) 12 VDC to the MX410 DC Input connec-
tor.
2. Press in the POWER button.
HEADPHONE MONITORING
1. Connect stereo headphones to the HEADPHONE output on the front panel. NOTE:
THESE MUST BE STEREO HEADPHONES OR EARPHONES - USING MONO PHONES
WILL DAMAGE THE MX410.
2. Set the PHONES level to 0.
3. Verify signal in the phones by slowly bringing up the PHONES level control.
4. Set the PHONES level control to a comfortable level.
INPUT CHANNEL SETUP
To set up a gain level for an input channel:
1. Connect a signal source (microphone) to a channel input connector.
2. If you’re using a condenser microphone, activate the Phantom Power by depressing the
phan switch.
3. Set the LEVEL Control at the 12 O’clock position (again - just a starting point).
4. Set the channel L C R switch for the desired signal position in the stereo field.
5. Engage the side panel “low cut” switch if needed. To reduce unwanted wind noise.
6. Verify there is signal present on the output meter(s).
OUTPUT CONNECTION
To connect to the MX410 main Outputs:
1. Connect an XLR cable to the LEFT and RIGHT Outputs of the MX410.
2. Set the output level switch to either LINE (switch in), or MIC (switch out).
3. Verify that the next device in the signal chain is receiving signal from the MX410.
L C R SWITCHES (Left - Center - Right)
The Stereo orientation switches routes an input channels signal between the
Left, Right and both outputs.
METERING
The MX410 features two calibrated, LED meters. Meter ballistics correspond
closely to how the human ear perceives loudness and provides a good visual
indication of how loud a signal will be.
OUTPUTS
The MX410 is designed with two individual balanced male XLR output jacks.
Each output is isolated providing excellent signal connectivity and noise perfor-
mance.
These outputs are generally connected to a recording device or other input look-
ing for a line-level signal. In the event you need to connect the MX410 output to
a mixer’s Microphone Input, set the Output Level select switch to MIC level. This
way the MX410 output is attenuated down, and will be more compatible with an
input looking for a microphone level signal.
POWERING
We recommend using 9V alkaline type batteries, however Lithium or NiMH bat-
teries work as well.
For AC power, Rolls provides the model # PS27 12 VDC supply to power the
MX410.
INDIVIDUAL CHANNEL LEVEL CONTROLS
The Level is the primary channel volume control. Level can be set to a nominal
level (around 12 O’clock) providing the maximum amount of variance and head-
room.
INPUT CHANNELS
The inputs to the MX410 consist of four, microphone preamplifiers. Each channel
has sufficient gain to accommodate nearly all microphone types.
The MX410 input channels can be used with balanced or unbalanced connec-
tions. When unbalancing - ground pin-3 to pin-1.
The AUX INPUT jack is provided for recording stereo sources such as CD play-
ers, MP3 and DVD players, etc.
OPERATION AND SET UP

FRONT PANEL
LEVEL 1, 2, 3, and
4: Adjust the level
of signal from the
corresponding Mic
Input.
L C R SWITCH
1, 2, 3, and
4: Adjusts the
relative Right/Left
signal level to the
outputs.
HEADPHONE
LEVEL: Adjusts
the level of signal
from the Head-
phone Output.
HEADPHONE
OUTPUT: Tip-
Ring-Sleeve 1/8”
(3.5 mm) Tip-Ring-
Sleeve jack.
REAR PANEL CONNECTIONS
Connect your microphones to the MX410 using balanced
XLR cables. Connect the MX410 Outputs to the next
device in your signal chain (usually a recording device of
some kind), also via balanced XLR cables.
For monitoring external signal sources, connect a stereo
(Tip-Ring-Sleeve) plug to the Aux Input.
IMPORTANT NOTICE: DO NOT PLUG MONO (Tip-
Sleeve) PLUGS INTO HEADPHONE JACK. DO-
ING SO WILL DAMAGE THE MX410.
REAR PANEL/TOP
12VDC / 100 mA: Power input connector.
Connects to the optional Rolls PS27 Power
Adapter.
POWER: Button - turns the MX410 on and
off. This switch has been designed to not
switch accidently. It is small and recessed
by design, so it will not turn off until you
intend to do so.
LEFT/RIGHT OUTPUT: Balanced XLR
jacks containing the main mix signal. Pin 2
is configured ”hot”, pin 3 is neutral, and pin
1 is connected to chassis ground.
OUTPUT LEVEL (MIC / LINE): When
pressed in, outputs are at MIC level when
out the outputs are at LINE level. A 1/8”
3.5mm T R S jack is also provided for the
output.
AUX INPUT: 1/8”Tip-Ring-Sleeve jack for
connection to an auxiliary line-level stereo
signal such as the output of another mixer,
AM/FM tuner, CD player, etc.
INPUTS 1 - 4: Balanced XLR jacks for con-
nection to dynamic or condenser micro-
phones.
PHAN 1 - 4: When the switch is DOWN for
the corresponding channel Phantom Power
is applied to the corresponding Input. See
top screening for explanation.
LOW CUT 1 - 4: When the switch is UP for
the corresponding channel it reduces the
low frequency (100Hz and below) of the
corresponding Input signal. To decrease
wind noise or popping.
+20
+20+20 +20
1234
LEVEL LEVEL LEVEL LEVEL LEVEL
R
LR
LR LR L
left
right
MX410
HEADPHONE ENG MIXER
AUX
INPUT MIC
LINE +
-
CHANNEL
1CHANNEL 2CHANNEL 3CHANNEL 4
BATTERIES
9V x 2
LEFT
RIGHT
Phantom
Low Cut
Phantom
Low Cut
Phantom
Low Cut
Phantom
Low Cut
SOUND MAN
Four Channel Stereo
Field Mixer
MADE IN USA
Phan Pwr ON=dwn
Low Cut ON=up
INPUTS OUTPUTS
MX410
POWER
OFF - ON
www.rolls.com
3.5mm
PWR
CC
C
C
PUSH PUSH PUSH PUSH
BATTERY
LIFT TO WITHDRAW
BATTERY
LIFT TO WITHDRAW