Audio Control Matrix Plus User manual

®
®making good sound better®
Six Channel Ultimate Performance
Line Driver
Let the Good Sounds Start!
You have just purchased an ultimate-performance autosound product;
the AudioControl Matrix Plus six channel line driver. The Matrix Plus
allows you to utilize every last bit of performance and sound quality that
you’ve always strived for from your vehicle’s sound system. So nd a nice
dry spot (we can’t recommend any near us), take a load off and spend a
few moments reviewing this Enjoyment Manual. Here we go!
Features of the Matrix Plus:
• High signal voltage capability:
13 volts peak output
• 24 dB of gain
• Six channels of input and output
• Balanced differential inputs
• Low-impedance outputs
• Optional Remote Level Control
(ACR-1)
• PFM Subsonic lter
• Output level controls
• Ultra-low distortion, ultra-quiet
operation
• Selectable ground isolation
• Optimum voltage indicator LED’s
FEATURES AND HIGHLIGHTS
High-Voltage Line Driver
The Matrix Plus is a pre-amp line driver that takes the input signal from
up to three source units, increases it (up to 13 volts peak) and then delivers
it downstream. No more low signal output voltages to allow noise into the
rest of your performance car audio system.
Six Channel Inputs & Outputs
The Matrix Plus was designed for ultimate pre-amp exibility. With
that in mind we have provided six channels for input and six for output!
For even more exibility, the Matrix Plus inputs can be linked internally
whereby one input channel can feed one, two, or three output channels.
Balanced Inputs
The Matrix Plus features balanced differential input circuit that rejects
noise that radiates into the signal path between the source unit and your
Matrix Plus. Even better, this circuit uses standard RCA connectors.
Anti-Oscillation Output Circuitry
Driving long lengths of cable can present a nasty capacitive load to
the source that has to drive them. This capacitance can cause instabilities,
which can lead to oscillations, radio interference and excessive system
hiss. The Matrix Plus’s low-impedance, high-current output circuitry easily
handles long cable runs without their associated problems.
Output Voltage Indicators
Setting voltage levels for optimum signal-to-noise performance can be a
real pain - especially when you have to get out the old digital voltmeter and
nd a way to make those probes stay put while you try to read the dancing
LCD display. With the Matrix Plus’s voltage indicator LED’s, you can say
good-bye to that headache. Just turn the Matrix Plus gain control until your
favorite light ickers and you’re done!
- 2 -

Selectable Ground Isolation
Avoiding ground loops and grounding-related noises are of paramount
importance in any installation. For this reason we have provided a exible
scheme of isolating signal grounds and power grounds.
Programmable Frequency Match (PFM) Subsonic Filter
Many car audio systems truly push the limits of their subwoofer...
without really knowing it. Tuned enclosures affect the roll-off of many
speakers, yet lots of source material force the speakers to play lower than
expected. The net result is wasted amplier power and damaged speak-
ers. The AudioControl PFM (Programmable Frequency Match) lter is a
programmable subsonic lter. It allows you to only let the speaker play as
low as it should be playing. Because every system is different, we allow
you to change the PFM roll-off frequency to whatever you choose.
Remote Level Control (optional)
You can purchase separately, the ACR-1 remote control to adjust vol-
ume output from the comfort of the driver’s seat.
The Most Important Feature Of All: Reliability.
That’s right, your AudioControl Matrix Plus comes with a full 5 year
parts and labor warranty when it is installed by an authorized United
States AudioControl dealer. These seasoned pros have the training and the
equipment to take care of the job quickly and not leave your installation
looking like some of those things in the back of the refrigerator. Keep in
mind that if you, or your friends who are “good with electronics” choose
to install it yourselves, your Matrix Plus still has a 1-year parts and labor
warranty.
- 3 -
A GUIDED TOUR OF THE Matrix Plus
The Outside
1. Inputs: The Matrix Plus will accept up to six channels of input
signal which means it will work with source units that have six channels
of output or it will accommodate three two-channel source units as in the
case of multi-media. All of the inputs utilize a balanced differential input
circuit, which can cancel noise that radiates into the signal path.
2. Linking to Outputs: There is amazing exibility with the Matrix
Plus for routing one input to one, two, or three outputs. These “Connected
to Main” LEDs light when the jumpers under the cover are set to route the
main input to outputs “Channel 2” and/or “Channel 3”. See page 7.
3. Level Control: These cool little knobs can increase or decrease the
amount of signal sent downstream to your signal processors or ampliers.
With this control you can get up to 24 dB of gain(13 volts peak) or 12 dB
of cut to maximize the amount of signal sent to your signal processors
or ampliers inputs. Before you start to crank them all of the way up,
remember this: Most ampliers can’t handle input voltages over 3 volts
without clipping. If in doubt, check with the amplier manufacturer.
4. Outputs: The Matrix Plus has six channels of low impedance out-
put, which helps when you desire more output because you have too much
input. Huh? What we mean is each pair of outputs on your Matrix Plus
has the strength and ability to drive more than just one amplier. In fact,
you can drive up to 7 ampliers off of each pair of outputs, which means
you have the possibility of driving 21 stereo ampliers or even 42 mono
ampliers! Wow!
5. Power: If you see this one lighted, pat yourself on the back for prop-
erly connecting the power terminal.
6. Maximized: When these lights icker while music is playing, you’re
pushing the limit - nearing the redline - entering the danger zone. Try
backing off on the Gain Control until it stops ickering.
- 4 -

- 5 -
1
3
7
6
5
4
9
2
8
- 6 -
7. 1, 2, & 5 Volt: These lights will tell you when the signal level is
at 1 volt, 2 volts or 5 volts. You’ll most likely want at least the 2-volt
light to icker, more if the rest of your components can handle it. Any
AudioControl component that you connect after the Matrix Plus Line
Driver won’t mind the 5 volt light ickering. Go ahead. Light it up!
8. Power Connector: This convenient little connector allows you to
hook up all the power and turn-on wires for your Matrix Plus Line Driver
in the convenience of a well-lighted area and then plug them in by feel all
at once in your trunk’s cavernous darkness. Screws on top of the connec-
tor should face up. But if you put the plug in upside down, nothing will be
damaged, the Matrix Plus just will not power up.
9. Remote Level Control Input: Input for optional ACR-1 dash
mountable remote level control.
The Inside
10. Balanced Input Selector: Located under the cover and behind the
Input connectors are jumpers that allow you to utilize or bypass the bal-
anced input circuitry. Although it is shipped in the balanced mode, which
is best, it may be necessary to change this depending upon the congura-
tion of the components you use. To change this, move the appropriate
jumper on the 3-pin header.
11. Ground Isolation Selector: This feature allows you to change
the power supply ground for different systems. When the Matrix
Plus is shipped from the factory, the selector is in the fully isolated
position(which is generally the best.) To change the settings, make sure
you turn the system off, carefully move the black jumper from the center
two pins(Isolated) and move it to either the top two pins(200 ohms) or the
bottom two pins(ground).

12. Channel Linking: To link the Main input to Ch 2 and 3 outputs,
move the main jumper to the (opposite) position to enable the linking
function. Then move the jumpers for Ch 2 or 3 or both channels to the
“Connected to Main” position. The “Connected to Main” LEDs will illui-
minate when the three jumpers for each Ch 2 and/or Ch3 are set correctly.
Please see video tutorials on our YouTube channel for more information.
Note: When removing and replacing chassis top be sure to align LED
and knob holes.
11
10
12
Signal-To-Noise:
An Up and Coming Rock Group?
Your systems signal-to-noise (S/N) ratio is the measurement between
your audio signal level, which contains music, and your system’s noise
oor, which contains hiss, pops, buzzes, and whines. If you are listening
to your buddies car audio systems and it has all of the above obnoxious
sounds...even when the music is playing, we call that LOW signal-to-
noise. On the other hand if you have your volume control cranked up
on quiet songs, and you hear almost ZERO background noise, that is
considered a HIGH signal-to-noise ratio. Most serious sound-off competi-
tors have high signal-to-noise ratios (at least the ones that take home the
trophies).
When you talk about signal-to-noise ratios, the higher the signal, the
better. Since you really can’t reduce the noise oor, signal-to-noise ratio
can be readily improved by raising the signal level with a component like
the Matrix Plus.
Level Matching
Level Matching is about making sure you run just the right amount
of signal into an audio component. Since all AudioControl products are
capable of high-voltage input and output, it is important that you MATCH
the input voltage of your components. Most crossovers and ampliers can
handle up to about 2 volts before they clip. AudioControl signal processors
can all produce at least 7.5 volts RMS, and can accept anywhere from 5 to
9 volts RMS. LED voltage indicators on many of our products (like this
one!) make it a snap to set levels!
- 7 - - 8 -

Quick Install Guide
Since some of you will want to install your Matrix Plus on your own
we offer a few reminders in the following short section to speed up your
installation.
➊Physically mount the Matrix Plus in a location that keeps it away
from soda spills, food crumbs, and curious ngers.
➋The Matrix Plus needs to be installed as close to the source unit as
possible. Connect RCA cables from source unit to Matix Plus inputs. If
this is not obvious to you, quickly pack up your Matrix Plus and run to
your nearest authorized AudioControl dealer to have them perform the
installation. You will thank us later.
➌ Use RCA connecting cables to connect the RCA outputs of the
Matrix Plus to your amplier(s).
➍ Connect +12 power, and ground.
➎
Connect your head units Remote turn on 12-volt trigger to the Matrix
Plus.
➏Turn your amp gains fully down before turning on the system.
➐Turn on the system and level match your Matrix Plus to your source
unit, signal processor and ampliers. For more help see our technical
videos at http://www.audiocontrol.com/t34/Mobile-Audio.html
If you have your authorized AudioControl dealer install your Matrix Plus, we
will extend the normal one-year warranty to a full ve years. AudioControl
products are, by nature, more technical than many others and we spend a good
deal of time training our dealers and installers so we know our products will
be installed correctly.
Placement And Mounting of Optional Dash Remote (ACR-1):
(Purchased Separately) The dash control may be mounted under the
dash using its own bracket or through a custom hole in the
dash. It should be within reach of the driver and in a
spot where the LED is plainly visible.
- 9 - - 10 -

Six-channel Source Unit
Head units with separate front, rear and subwoofer outputs are easily accommodated with the Matrix Plus.
- 11 - - 12 -

Maximum SPL System
The input channel linking feature allows the Matrix Plus to receive a two channel signal and produce six channels of output.
- 13 - -14 -

The WARRANTY
People are scared of warranties. Lots of ne print, lots of noncoopera-
tion, months of waiting around. Well, don’t be scared of this warranty. It’s
designed to make you rave about us to your friends. It’s a warranty that
looks out for you and helps you resist the temptation to have your friend
“who’s good with electronics” try to repair your AudioControl MATRIX
PLUS. So go ahead and read this warranty, then enjoy your new compo-
nent for a few days before going to the AudioControl website and register-
ing for the warranty.
“Conditional” doesn’t mean anything ominous. The Federal Trade
Commission tells all manufacturers to use the term to indicate that certain
conditions have to be met before they’ll honor the warranty. If you honor
these conditions, we will warrant all materials and workmanship on your
MATRIX PLUS for ve years from the date you bought it and will x or
replace it, at our option, during that time.
Here are the conditions that make this warranty conditional:
1. We need to know that you bought your product from an authorized
AudioControl dealer. So go to www.audiocontrol.com or audiocontrolreg-
istration.com right away, and register your MATRIX PLUS.
2. You must keep your sales receipt for proof of purchase, showing
when and from whom the unit was bought. We’re not the only ones who
require this, so it’s a good habit to get into with any major purchase.
3. Your MATRIX PLUS must have originally been purchased from an
authorized AudioControl dealer. You do not have to be the original owner,
but you do need a copy of the original sales slip.
4. You cannot let anybody who isn’t (A) the AudioControl factory; (B)
somebody authorized in writing by AudioControl to service your MATRIX
PLUS . If anyone other than (A) or (B) messes with your MATRIX PLUS,
that voids your warranty.
5. The warranty is also void if the serial number is altered, removed, or
if the MATRIX PLUS has been used improperly. Now these sound like big
loopholes, but here is all we mean by it.
Unwarranted abuse is (A) physical damage (don’t use the MATRIX
PLUS for a jack stand); (B) improper connections (120 volts into the
power jack can fry the poor thing); (C) sadistic things. This is the best mo-
bile product we know how to build, but if you mount it to the front bumper
of your car, something will go wrong.
6. If an authorized United States AudioControl dealer installs your MA-
TRIX PLUS, the warranty is ve years, otherwise the warranty is one year.
Assuming you conform to 1 through 6, and it really isn’t all that hard to
do, we get the option of xing your old unit or replacing it with a new one.
Validate your warranty: Visit http://audiocontrolregistration.com to
register your MATRIX PLUS
Legalese Section
This is the only warranty given by AudioControl. This warranty gives
you specic legal rights, which vary from state to state.
Promises of how well your MATRIX PLUS will work are not implied
by this warranty. Other than what we’ve covered in this warranty, we have
no obligation, express or implied. Also, we will not be obligated for direct
or indirect consequential damage to your system caused by hooking up the
AudioControl MATRIX PLUS.
Failure to register your MATRIX PLUS at www.audiocontrolregistra-
tion.com, negates any service claims.
- 15 - - 16 -

P/N 913-111-0
Rev C
making good sound better®
22410 70th Avenue West • Seattle, WA 98043
425-775-8461 • Fax [phone] • www.audiocontrol.com
®
Matrix Plus
SPECIFICATIONS
All specications are measured at 14.4 VDC (standard automotive voltage) As
technology advances, AudioControl reserves the right to continuously change our
specications, like our weather.
Maximum input/output level...........................................9.5Vrms/13V peak
Frequency response...................................................... 10Hz-100kHz;±1dB
Total harmonic distortion..................................................................0.005%
Signal to Noise ratio.......................................................................... -110dB
Inputs/Outputs.................................................................................2, 4, or 6
Input Impedance..........................................................................20 K Ohms
Output impedance .......................................................................... 50 Ohms
Output gain...................................................................... - 12 dB to + 24 dB
PFM Subsonic Filter ................................................ 33Hz/18 dB per octave
Power supply........................Transformer isolated PWM DC/DC converter
Power draw ....................................................................................... 250mA
Recommended fuse rating.................................................................. 1 Amp
Size..................................................................................8.7” x 6.7” x 1.15”
Weight .............................................................................................. 2.25 lbs
Country of Origin.................................................................................. USA
©2012, AudioControl Inc. All rights reserved.
AudioControl, Making Good Sound Better, Performance Match, and Matrix Plus
are all trademarks of AudioControl Inc.
This literature was conceived, designed, and written under the protective canopy
of the lush, green, misty rain forest on a drizzly, gray overcast day at our home in
the Pacic Northwest.
- 17 - - 18 -