Features
• 4 Channel Amplier with AccuBASS® Processing
• Congurable as 4/3/2 channels
• 4 x 200 W @ 2 ohms, 125 W @ 4 ohms, 2 x 400 W bridged
• High Current Design
• 4 RCA Line Inputs
• 2 RCA Line Outputs
• 6 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
• Solid and Rugged Chassis
• Minty
High-Power Multi-Channel Amplier
Quick Start Guide
Important Safety Instructions
2
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 muers, silencers, exhaust
pipes, or other apparatus (including ampliers) 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 qualied
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 8 to 3 AWG to ensure
adequate current to the amplier.
11. Use rubber grommets to protect wiring whenever passing wires through
metal openings or bulkheads.
12. Only use attachments/accessories specied by the manufacturer.
13. Refer all servicing to qualied service personnel. Servicing is required
when the apparatus has been damaged in any way, such as the power input 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
sucient 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 maintenance (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 qualied personnel.
Recycling notice: If the time comes and this apparatus has fullled
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.
Quick Start Guide
Connection Panel Features
1 2 3 4 5 6
1. Fuses 40A – 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, 8 to 3 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-4.800 will turn on.
4. Power Input Terminal Ground – This screw terminal connects to
a good ground connection on the vehicle. Use quality insulated
wire, gauge 8 to 3 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-4.800 amplier will receive the line-level audio signals. Do not
use these inputs if you are using the speaker-level inputs.
8
6. RCA Analog Line-Level Outputs – The line-level output can
connect to external ampliers or subwoofer ampliers.
7. Speaker-Level Inputs – The speaker-level output from ampliers
and factory installed radios can connect here. Do not use these
inputs if you are using the RCA line-level inputs.
8. Remote Control Connector – This connects to the ACR-1 remote
level control.
9. 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.
97
3
Control Panel Features
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10 11 12 16 1713 14 15 18 19 20 14 21 15 16 17 22 23
Quick Start Guide
10. 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.
11. Protection LED – The amplier has built-in diagnostic codes to
tell you exactly what is going wrong should the amplier detect a
problem. See specications page 11 for a list of diagnostic codes.
12. GTO Signal Sense – In the ON position, the LC-4.800 amplier will
turn on gracefully when it detects an incoming audio signal, 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.
13. Front High Level – Adjusts the Front High speaker-level input
levels, to achieve a nice balance in levels.
14. AccuBASS®/ACR-1 – Enables/disables the AccuBASS® circuit and
the ACR-1 remote level control. If enabled, ACR-1 controls the
level of the level of the main outputs and line outputs. If disabled,
then it just controls the line outputs (to a subwoofer for example)
The AccuBASS® has its own controls to work wonders on the lower
bass of the main outputs and line outputs.
15. HP Crossover Frequency – Selects the 30 Hz to 300 Hz crossover
point to match your speakers and system. The crossover for channels 1/2 is high-pass only; the crossover for channels 3/4 can be
selected as high-pass or low-pass.
16. Mono/Stereo – Ampliers 1 and 2 can be joined in mono to power a single more powerful speaker (4 Ohm minimum). Similarly for
ampliers 3 and 4. For example, 1/2 can be stereo, 3/4 mono.
17. Gain Control – Adjusts the overall output levels.
18. AccuBASS® Threshold – Selects the level at which the AccuBASS®
will begin to work.
19. AccuBASS® Level – Adjusts the level of the AccuBASS®.
20. Front/Rear Bus Sum – This sums the front and rear inputs togeth-
er. So two inputs (L/R) can feed four outputs (2L/2R).
21. Crossover Type LP/HP – The crossover of channels 3/4 can be
selected as a high-pass or low-pass type. Super for bi-amping your
speakers, with channels 1/2 high pass, and channels 3/4 low pass.
22. 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 is clipping, and if it is, this LED will fulll its
prime objective and shine forth.
With this advanced feature, you are able to optimize the level of
the incoming audio signal 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-4.800.
23. Gain Maximized LEDs – These LEDs indicate when the LC-4.800
amplier gain for channels 1/2 and 3/4 has been maximized for
optimum performance.
5
Quick Start
6
Here are a few general steps to get your LC-4.800 amplier up and
running:
1. Undo the +12V and Ground connections to the car battery
before making any connections to the amplier.
2. Pick a mounting location that will provide access to the controls
and connections, provide adequate ventilation, and also protect
the amplier from heat, moisture, and dirt. Make sure the ventilation slots on the sides are not blocked, and that the heatsink
ns are not covered.
3. The LC-4.800 amplier 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 wiring, hydraulic brake lines, and other systems, that might compromise 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 terminal of the vehicle battery, using 8 to 3 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 minimum 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-4.800 crossovers to the frequency recommended by
the loudspeaker manufacturer.
16. Adjust the LC-4.800 AccuBass controls to suit. The ACR-1 adjusts
the overall output level.
17. Enjoy the drive!
Quick Start Guide
Power Connections
Head Unit
Remote Amplifier
+12V Trigger
+12V
Ground
In this example, the head unit has a +12V trigger
output that is connected to the LC-4.800’s remote
input terminal. When the head unit is turned on, it
will turn on the LC-4.800 amplier.
Alternatively, the GTO signal sense feature can be
used to gently turn on the LC-4.800 amplier when
an audio input signal is detected. In this case, the
connection to the LC-4.800’s remote input terminal
is not required.
Use 8 to 3 AWG insulated wire for the +12V and
Ground connections.
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System #1: Using speaker-level inputs
8
Front High Speaker-level output
Factory
Radio
Rear Speaker-level output
Front Low Speaker-level output
ACR-1
Notes:
Both crossovers are set to 80 Hz
high-pass.
If the AccuBASS®/ACR-1 switches
are set to “disabled” the ACR-1 can
control just the line-level output,
so you can adjust the subwoofer
level on the y.
+
Speaker-level output
80 Hz and above
+
+
Line-Level
Speaker-level output
80 Hz and above
+
+
EPICENTER 600 Subwoofer Amplifier
Subwoofer
Quick Start Guide
System #2: Using line-level inputs
+
Speaker-level output
30 to 80 Hz
and above
+
2-Channel
Audio Device
Left Out
Right Out
ACR-1
Notes:
Both crossovers are set to
high-pass, and adjusted to
suit, depending on if you
have a subwoofer or not.
If the AccuBASS®/ACR-1
switches are set to “enabled”
the ACR-1 and AccuBASS®
aects all outputs.
Line-level
EPICENTER 600 Subwoofer Amplifier
Optional
Line
Level
+
Speaker-level output
30 to 80 Hz
and above
+
+
Subwoofer
9
10
ACR-1 Dash Control Installation
The AudioControl ACR-1 dash control is a remote level for your
LC-4.800 amplier. 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 position, 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 amplier.
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 satisfaction, and just before Chivers brings tea and sandwiches.
Quick Start Guide
Specications
All specications are measured at 14.4 VDC (standard automotive voltage). As technology advances, AudioControl reserves the right to continuously change our specications, like our Pacic Northwest weather, although we are working on changing that as well.
LC-4.800 Multi-Channel Amplier
Power Output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 x 125 Watts @ 4 Ohms
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 x 200 Watts @ 2 Ohms
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 x 400 Watts @ 4 Ohms Bridged
Frequency Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 Hz – 30 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 8 and 3 AWG
Fuse Rating .............................................2 x 40 Amps
Crossover. . . . . . . . . . . . . . . . . . . . . . . . . . Dual Independent Linkwitz-Riley,
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjustable From 30 - 300 Hz
Speaker-Level Inputs. . . . . . . . . . . . . . . . 6 x, summable, 40 V (400W) max
Line-Level Inputs. . . . . . . . . . . . . . . . . . . . . . . . . .4 x, balanced RCA, 8 V max
Line-Level Outputs. . . . . . . . . . . . . . . . . . . . . . 2 x, balanced RCA, 8.5 V max
Weight .......................................................5.0 lbs
Dimensions ...............................9.00" W X 7.95" D X 2.10" H
©2016 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
LC-4.800 Amplier Codes:
Power (Blue) Codes (Blue LEDs inside the unit)
Power Up
Reset Boot
Protection Activated
Protection (Red) Codes (Protection LED)
1
Short
2
Repeated Short
3
Under Voltage
4
Over Voltage
5
DC Oset
6
Thermal Heatsink
7
Thermal Transformer
AudioControl
22410 70th Avenue West, Mountlake Terrace, WA 98043 USA,
Phone 425-775-8461, FAX 425-778-3166
e-mail: sound.great@audiocontrol.com
11
Block Diagram
Inputs
Speaker Level
Front High
Speaker Level
Front
Line Level Front
Line Level Rear
Speaker Level
Rear
Left
Right
Left
Right
Active
Speaker Level
Conversion
Active
Speaker Level
Conversion
Active
Speaker Level
Conversion
Level
TM
GTO
Signal Sense
TM
MILC
Level Matching
Front / Rear
Bus Combine
Front Bus
Rear Bus
AccuBASS
& ACR-1
AccuBASS
AccuBASS
& ACR-1
Variable HP
Crossover
ACR-1 Remote
Level Control
Variable LP/HP
Crossover
Mono/
Stereo
Remote Level
Mono/
Stereo
Here of Old was
Thrain, King under
the Mountain
Gain
2 x 200 W @ 2 ohm
Gain
2 x 200 W @ 2 ohm
Power Amplifiers
Power Amplifiers
Speaker
Outputs
-
+
Bridged
-
+
Line
Outputs
Left
Right
Speaker
Outputs
-
+
Bridged
-
+
12
1
2
3
4
Quick Start Guide PN 915-004-0 Rev A
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