Audio Control LC-5.1300 User manual

High Power Five Channel Amplier
Features
• 5 Channel Amplier with AccuBASS® Processing
• Congurable as 3 or 5 channels
• 4 x 100 W @ 4 Ohms + 1 x 300 W @ 4 Ohms
• 4 x 200 W @ 2 Ohms + 1 x 500 W @ 2 Ohms
• High Current Design
• 6 RCA Line Inputs
• 8 Summable Speaker-Level Inputs for OEM integration
• MILCTM Level Matching Technology (Patent pending)
• GTOTM Signal Sense (Great Turn On)
• Independent 12 dB Linkwitz-Riley Crossovers
• Optional ACR-1 Dash Remote
• Non-GMO, Grade AA goodness
LC-5.1300
Quick Start Guide

Quick Start Guide
LC-5.1300
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. Do not install near any heat sources such as muers, silencers, exhaust
pipes, or other apparatus (including ampliers) that produce heat.
9. WARNING: Improper installation may lead to permanent injury or death.
Installation of the apparatus must be done with great care by qualied
personnel, to prevent damage to fuel lines, power, and other electrical
wiring, hydraulic brake lines, and other systems, that might compromise
vehicle safety.
10. Provide +12V and Ground insulated wiring of 4 to 0 AWG to ensure
adequate current to the amplier.
11. Use rubber grommets to protect wiring whenever passing wires through
metal openings or bulkheads.
12. Only use attachments/accessories specied by the manufacturer.
13. Refer all servicing to qualied service personnel. Servicing is required
when the apparatus has been damaged in any way, such as the power in-
put terminals are 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.
14. This apparatus shall not be exposed to dripping or splashing, and no
object lled with liquids, shall be placed on the apparatus.
15. Fuses shall be replaced only with the correct type and fuse value, and
only when the apparatus is powered o.
16. Exposure to high sound pressure levels may lead to permanent hearing
loss. Take every precaution to protect your hearing.
The lightning ash with arrowhead symbol within an equilateral
triangle is intended to alert the user to the presence of uninsulated
“dangerous voltage” within the product’s enclosure, that may be of
sucient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to
alert the user of the presence of important operating and mainte-
nance (servicing) instructions in the literature accompanying the
appliance.
Caution: to reduce the risk of electric shock, do
not disassemble the apparatus, other than to
remove the top panel to access the controls.
There are no user-serviceable parts inside. Refer
servicing to qualied personnel.
Recycling notice: If the time comes and this apparatus has fullled
its destiny, do not throw it out into the trash. It has to be carefully
recycled for the good of mankind, by a facility specially equipped
for the safe recycling of electronic apparatii. Please contact your
local or state recycling leaders for assistance in locating a suitable
nearby recycling facility. Or, contact us and we might be able to
repair it for you.

3
1. Fuses 30A – Replace these fuses only with the exact same style
and Ampere rating. Disconnect 12V power before changing or
inspecting the fuses.
2. Power Input Terminal +12V – This screw terminal connects to
the +12V battery binding post of the vehicle. Use quality insulated
wire, 4 to 0 AWG.
3. Remote Power Input Terminal – This screw terminal connects to
the 12V remote trigger output of some head units. When the head
unit is turned on, then the LC-5.1300 will turn on. Alternatively,
this terminal will output +12V if the LC-5.1300 turns on using GTO
signal sensing. This can be used to remotely turn-on power ampli-
ers when the LC-5.1300 is awoken by the GTO.
4. Power Input Terminal Ground – This screw terminal connects to
a good ground connection on the vehicle. Use quality insulated
wire, gauge 4 to 0 AWG.
5. RCA Analog Line-Level Inputs – The line-level output from the
head unit or factory-installed radios can connect here, so the
LC-5.1300 amplier will receive the line-level audio signals. Do
not use these inputs if you are using the speaker-level inputs.
6. Speaker-Level Inputs – The speaker-level output from ampliers
and factory installed radios can connect here. Do not use these
inputs if you are using the RCA line-level inputs.
7. Remote Control Connector – This connects to the ACR-1 remote
level control.
8. Speaker-Level Output Terminals – These screw terminals
connect with speaker wire to your loudspeakers Make sure that
the average combined speaker impedance does not dip below
2 Ohms, or 4 Ohms in bridged mono mode.
Connection Panel Features
1 2 3 4 5 6 7 8

Quick Start Guide
LC-5.1300
4
Control Panel Features
9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

5
9. Power LED – If you have connected your battery power, vehicle
ground, and turn-on lead (or GTO signal sensing) correctly, then
this light should be green to indicate the power is ON.
10. Protection LED – The amplier has built-in diagnostic codes to
tell you exactly what is going wrong should the amplier detect a
problem. See page 15 for a list of diagnostic codes.
11. GTO Signal Sense – In the ON position, the LC-5.1300 amplier
will turn on gracefully when it detects an incoming audio signal
on inputs 1 and 2, and it will turn o after a period of time when
the audio signal fades away to silence. Turn this OFF if using the
remote power terminal (see item 3 above) turn on method.
12. Front High Level – Adjusts the Front High speaker-level input
levels, to achieve a nice balance in levels.
13. HP Crossover Frequency – Selects the HP crossover point to
match your speakers and system. Channel 1 and 2 outputs will
receive the frequency range above the frequency selected. Use
the crossover range switch (16) to select the range from 30 to 300
Hz, or from 500 Hz to 5 kHz. The crossover for channels 1/2 is high-
pass only.
14. Crossover Range – Use this switch to select the range of the HP
crossover frequency control (15) from 30 to 300 Hz, or from 500 Hz
to 5 kHz.
15. Mono/Stereo – Ampliers 1 and 2 can be joined in mono to pow-
er a single more powerful speaker (4 Ohm minimum).
16. Gain Control – Adjusts the overall 1 and 2 output levels.
17. 1/2 and 3/4 Bus Sum – This sums the 1/2 and 3/4 inputs together.
So two inputs (L/R) can feed four outputs (2L/2R).
18. HP Crossover Frequency – Selects the HP crossover point to
match your speakers and system (if the crossover switch (24) is set
to HP). The channel 3/4 outputs will receive the frequency range
above the frequency selected. If the crossover switch is set to
bandpass, then this selects the top frequency of the band.
19. Crossover Type HP/Bandpass – The crossover of channels 3/4
can be selected as a high-pass or bandpass type. For example,
bandpass is super for bi-amping your speakers, with channels 1/2
high pass for tweeters, and channels 3/4 bandpass for mid-range.
20. LP Crossover Frequency – Selects the lower frequency of the
band to match your speakers and system (only if the crossover
type switch (24) is set to bandpass). The channel 3/4 outputs will
receive the frequency range selected by the HP and LP controls.
21. Mono/Stereo – Ampliers 1 and 2 can be joined in mono to pow-
er a single more powerful speaker (4 Ohm minimum).
22. Gain Control – Adjusts the overall 3 and 4 output levels.
23. 3/4 and 5/6 Bus Sum – This sums the 3/4 and 5/6 inputs together.
So two inputs (L/R) can feed four outputs (2L/2R).
24. AccuBASS® – Enables/disables the AccuBASS® circuit for output 5.
The AccuBASS® has its own controls to work wonders on the lower
bass of the output.

Quick Start Guide
LC-5.1300
6
25. AccuBASS® Threshold – Selects the level at which the AccuBASS®
will begin to work.
26. AccuBASS® Level – Adjusts the level of the AccuBASS®.
27. Crossover Frequency – Selects the LP crossover point to match
your speakers and system. The channel 5 output will receive the
frequency range below the frequency selected.
28. Gain Control – Adjusts the overall 5 output levels.
29. LEDs:
MILC™ Source Clip LED – The MILC™ (Maximum Input Level
Control) patent-pending level-setting circuit prevents clipping
and damaging distortion. It calculates when the waveform of an
incoming audio signal on input 1 and 2 is clipping, and if it is, this
LED will fulll its prime objective and shine forth.
With this advanced feature, you are able to optimize the level of
the incoming audio signals until the Source Clip LED is just-prior
to lighting. If the LED comes on during normal operation, you
should adjust the level of the audio signals before they reach the
LC-5.1300.
Gain Maximized LEDs – These LEDs indicate when the LC-5.1300
amplier gain for channels 1/2, 3/4, and 5 has been maximized for
optimum performance.
AccuBASS® and ACR-1 Notes
AccuBASS®
The AccuBASS is applied to the input signal that feeds the output
of Channel 5. When set to Sum, the input signal for Channel 5 will
be whatever is being received as the Channels 3/4 input. Which, if
that is set to Sum, then the input signal will be 1/2.
ACR-1 remote
The ACR-1 remote level control aects the level of the signal after
the AccuBASS circuit, and the ACR-1 eects Channel 5 output.
The long-awaited moment when “plethora” is used in a manual
The plethora of LC-5.1300 controls allows for a wide variety of in-
stallation possibilities. This quick start guide gives a few examples
of system diagrams, and includes a few notes about the control
settings for each one.
Note: The technical writer reserves the right to be wrong about things, due to the
cold medicine being the night-time sleepy stu, and not the usual day-time strength.

7
Quick Start
Here are a few general steps to get your LC-5.1300 amplier up and
running:
1. Undo the +12V and Ground connections to the car battery
before making any connections to the amplier.
2. Pick a mounting location that will provide access to the controls
and connections, provide adequate ventilation, and also protect
the amplier from heat, moisture, and dirt. Make sure the ven-
tilation slots on the sides are not blocked, and that the heatsink
ns are not covered.
3. The LC-5.1300 amplier needs to be securely mounted using the
four mounting holes located in each corner.
4. Before drilling any holes, take every precaution to prevent
any damage to fuel lines, power and other electrical wir-
ing, hydraulic brake lines, and other systems, that might compro-
mise vehicle safety.
5. When making connections, designate red RCA plugs as right,
and designate white, black, or grey plugs as left. This is a good
idea for consistency.
6. Use quality interconnect cables.
7. Connect the +12V input terminal of the unit to the +12V termi-
nal of the vehicle battery, using 4 to 0 AWG.
8. Connect the Ground terminal of the unit to the chassis of the
vehicle, using the same wire gauge as the +12V power wire.
9. Connect the remote power terminal of the unit to the remote
turn-on switch of your source unit. Alternatively, you can skip
this connection and use the GTO Signal sensing.
10. Connect your audio inputs to the unit – either speaker-level or
line-level RCA… not both.
11. Run the ACR-1 remote to the front of the vehicle to adjust the
level on the y.
12. Connect your loudspeakers (2 Ohm stereo, 4 Ohm Bridged mini-
mum load).
13. When all connections are made, reconnect the vehicle battery.
14. Adjust your input source gain using the MILC Source Clip LED.
This will indicate if the incoming audio signals are clipping.
15. Set the LC-5.1300 crossovers to the frequency recommended by
the loudspeaker manufacturer.
16. Adjust the LC-5.1300 CH 5 AccuBass controls to suit. The ACR-1
adjusts the overall output level.
17. Enjoy the drive!

Quick Start Guide
LC-5.1300
8
Power Connections
In this example, the head unit has a +12V trigger output that is
connected to the LC-5.1300’s remote input terminal. When the head
unit is turned on, it will turn on the LC-5.1300 amplier.
Use 4 to 0 AWG insulated wire for the +12V and Ground connec-
tions.
In this example, the GTO signal sense feature can be used to gently
turn on the LC-5.1300 amplier when an audio input signal is de-
tected on inputs 1 and 2. In this case, the LC-5.1300’s remote input
terminal becomes a +12V trigger out to remotely turn on a power
amplier for example.
Ground
Head Unit
Remote Amplifier
+12V Trigger
+12V
Ground
+12V trigger output
to trigger-on an external amplfier
LC-5.1300 turns on using GTO on inputs 1 and 2
Remote terminal on LC-5.1300 now acts as a trigger out
+12V
Head Unit

9
System #1: Using speaker-level inputs
Notes:
The +12V Power and Ground connections are not shown (see page 8)
Speaker outputs 1 and 2: Stereo, 90 Hz and above, plays inputs 1 and 2
Speaker outputs 3 and 4: Stereo, 90 Hz and above, plays inputs 3 and 4
Speaker outputs 5: Mono, 90 Hz and below, plays inputs 3 and 4 with AccuBASS on), use ACR-1 to adjust sub level.
Gain adjustments are usually unique to system design and are not specied accordingly, likewise with AccuBASS Threshold and Level.
ON CCW 90 Hz Low Stereo Separate 90 Hz High Pass
N/A
Stereo
Sum
Enable
90 Hz
Factory
Radio
Front left/right
Speaker-level output
90 Hz and above
Rear left/right
Speaker-level output
90 Hz and above
Speaker-level output
90 Hz and below
Front Speaker-level output
Rear Speaker-level output
+
+
+
+
ACR-1
Subwoofer
+

Quick Start Guide
LC-5.1300
10
System #2: Tri-amping
Notes:
The +12V Power and Ground connections are not shown
Speaker outputs 1 and 2: Stereo, 3.5 kHz and above, plays inputs 1 and 2, no AccuBASS or ACR-1 eect
Speaker outputs 3 and 4: Stereo, bandpass 300 Hz to 3.5 kHz, plays inputs 1 and 2 (as SUM is on), no AccuBASS or ACR-1 eect
Speaker output 5: Stereo, 300 Hz and below, plays inputs 1 and 2, (because AccuBASS is on), use ACR-1 to adjust woofer level
ON CCW
3.5 kHz
500-5 kHz
Stereo
Sum
90 Hz
Band Pass
3.5 kHz
Stereo
Sum
Enable
90 Hz
Factory
Radio
Front L/R tweeters
Speaker-level output
3.5 kHz and above
Front L/R Woofers
Speaker-level output
90 Hz to 3.5 kHz
Front Speaker-level output
+
+
+
+
ACR-1
+
Subwoofer
Speaker level output
90Hz and down

11
System #3: Using optional ACX-BT1 Bluetooth receiver
Notes:
The +12V Power and Ground connections are not shown
Speaker outputs 1 and 2: Stereo, 90 Hz and above, plays inputs 1 and 2, AccuBASS is on, ACR-1 adjusts level of all outputs
Speaker outputs 3 and 4: Stereo, 90 Hz and above, plays inputs 1 and 2, AccuBASS is on, ACR-1 adjusts level of all outputs
Speaker output 5: Mono, 90 Hz and below, plays inputs 1 and 2, AccuBASS is on, ACR-1 adjusts level of all outputs
ON CCW
90Hz
Low
Stereo
Sum
90 Hz
High Pass
NA
Stereo
Sum
Enable
90 Hz
ACX-BT1
Front left/right
Speaker-level output
90 Hz and above
Rear left/right
Speaker-level output
90 Hz and above
Speaker-level output
90 Hz and below
+
+
+
+
ACR-1
Subwoofer
+

Quick Start Guide
LC-5.1300
12
ACR-1 Dash Control Installation
The AudioControl ACR-1 dash control is a remote level for your
LC-5.1300 amplier. It may be mounted under the dash using its own
enclosure, or through a custom hole in the dash. The knob should
be within reach of the driver, and in a spot where the LED is plainly
visible. Disconnect the vehicle battery +12V and Ground connections
before installation.
Dash Bracket Installation: The dash control mounts with four
screws, which attach to the underside of the dashboard. Slide
under the dash and place the dash control in its mounting po-
sition, mark the best mounting holes, carefully drill pilot holes,
and secure with screws.
Custom Installation: For that custom, nished look, the dash control
can be ush-mounted directly on the dashboard (or anywhere
else). Disassemble the ACR-1 from its enclosure.
Top Lid Removal
The top lid must be removed to gain access to the controls, and then
put back on again to protect the controls from dust bunnies.
Removal Procedure
1. Locate the two screws that hold the straight edge of the lid onto
the connector side of the amplier.
2. Use the supplied hex key to loosen both screws just enough
until this edge of the lid can lift freely up just a little. (There is no
need to remove the screws all the way, in case you lose them.)
3. Slide the lid toward the heatsink ns just a tad, before further
lifting the straight edge of the lid about 2”, then disengage the
remaining two points of contact (under the wavy edge).
4. Place the lid in a safe and handy place, ready for the time when
you have nished adjusting the controls to your immense satis-
faction, and just before Chivers brings tea and sandwiches.

13
Specications
All specications are measured at 14.4 VDC (standard automotive voltage). As technology advances, AudioControl reserves the right to continuously change our specica-
tions, like our Pacic Northwest weather, although we are working on a surround-sound umbrella as well.
LC-5.1300 Multi-Channel Amplier
Power Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 x 100 Watts @ 4 Ohm
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 x 300 Watts @ 4 Ohm
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 x 200 Watts @ 2 Ohm
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 x 500 Watts @ 2 Ohm
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20 Hz - 22 kHz
S/N Ratio ....................................102 dBA, ref 200 Watts @ 2 Ohm
THD+N ...............................................................< 0.1%
Bass Processing .......................................AccuBASS® Restoration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AccuBASS® Patent # 9,225,305
Power / Ground Wire Gauge ............................between 4 and 0 AWG
Fuse Rating ......................................................4 x 30 amps
Crossover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Channel 1/2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .High Pass Linkwitz-Riley
. . . . . . . . . . . . . . . . . . . . . . . . . . . . adjustable from 30 Hz - 300 Hz or 500 Hz - 5 kHz
Channel 3/4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . High Pass/ Bandpass Linkwitz-Riley
...................................High Pass adjustable from 30 Hz - 300 Hz
....................................Low Pass adjustable from 500 Hz - 5 kHz
Channel 5 ..........................................Low Pass Linkwitz- Riley
............................................. adjustable from 30 Hz - 300 Hz
Speaker-Level Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 x, summable, 40 V max
Line-Level Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 x, balanced RCA, 6 V max
Weight ...............................................................7.2 lbs
Dimensions.......................................12.00” W x 7.95” D x 2.10” H
©2020 AudioControl. All rights reserved.
For more information about this ne product, and for details of the limited
warranty, and repair services, please visit our website at
www.audiocontrol.com
All specications are subject to being covered in honey without notice.
6
7
3
1
2
4
5
Thermal Heatsink
Thermal Transformer
Under Voltage
Short
Power Up
Reset Boot
Protection Activated
Repeated Short
Over Voltage
DC Oset
LC-5.1300 Amplier Codes:
Protection (Red) Codes (Protection LED)
Power (Blue) Codes (Blue LEDs inside the unit)
AudioControl
22410 70th Avenue West, Mountlake Terrace, WA 98043 USA,
Phone [phone], FAX [phone]
email: [e-mail]

Quick Start Guide PN 915-024-0 Rev E
LC-5.1300
Block Diagram
Active
Speaker Level
Conversion
3-4 / 5-6
Bus Combine
Variable LP
Filter
Gain
-
+
Speaker
Outputs
Speaker Level
Sub (5/6)
Line Level Sub
5
R (6)
L (5)
ACR-1
5-6 Bus
3-4 Bus
Fangorn/
Mountlake
Terrace
Active
Speaker Level
Conversion
Active
Speaker Level
Conversion
Active
Speaker Level
Conversion
Level
1-2 / 3-4
Bus Combine
Variable BP/HP
Crossover
Gain
+
-
-
+
Speaker
Outputs
Speaker
Outputs
Bridged
Speaker Level
Rear (3/4)
Line Level Rear
Line Level Front
Speaker Level
Front (1/2)
Speaker Level
Front High
Inputs
Gain
MILC
Level Matching
GTO
Signal Sense
TM
Variable HP
Crossover
TM
+
-
-
+
1
2
3
4
Bridged
Mono/
Stereo
Mono/
Stereo
R (4)
L (3)
R (2)
L (1)
Power Amplifiers
4 x 200 W @ 2 ohm
3-4 Bus
1-2 Bus
1 x 500 W @ 2 ohms
Doors of Durin