Audio Control LC-1.800 User manual

5
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Audioconti'OI ®
Making Good Sound creat TM
Features
High Power Mono Subwoofer Amplifier
High Current Design
800 Watts @ 2
Ohm
MILCM Maximum Input Level Control (Patent Pending)
24 dB/Octave Linkwitz-Riley
Alignment Crossover
GTO Signal Sense
PFM Subsonic Filter
Line-Level RCA Input sand Active Speaker-Level Inputs
So lid One-Piece Aluminum Chassis
Optional wired
ACR-1 Remote Control for Subwoofer Level
AccuBASS®
Bass Restoration
Fi ll ed with home-grown audio goodness
LC-1.800
HIGH-POWER SUBWOOFER AMPLIFIER
Quick StartGuide

------------------------------------------LC-1.800
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
adry cloth.
7.
Do
not
blockany ventilation openings. Install in accordance
with
the
manufacturer's instructions.
8.
Do
not
install near any heat sources such
as
mufflers, silencers, exhaust
pipes,
or
other apparatus (including amplifiers)
that
produce heat.
9.
WARNING:
Improper installation may lead
to
permanent injuryor death.
Installation
of
the apparatus must be done
with
great
care
by qualified
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 wiring
of
sufficient
size
to
ensure adequate
current
to
the amplifier.
For
the LC-1.800 this means 4 gauge wire or
lower.
11.
Use
rubber grommets
to
protect wiring whenever passing wires through
metal openings or bulkheads.
12.
Only
use
attachments/accessories specified by the manufacturer.
13.
Refer
all servicing
to
qualified 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
intothe 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 filled 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 off.
16.
Exposure
to
high sound pressure levels may lead
to
permanent hearing
loss.
Take
every precaution
to
protect your hearing.
£.
The lightning flash 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
sufficient 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
£.
II\
not
disassemble the apparatus, otherthan
to
ffi
ill
remove the
top
panel
to
access
the controls.
wARNING:sHocKHAZARo-ooNoroPEN.
There
are
no user-serviceable parts inside.
Refer
ATTENTioN:
RlsauE
oE
cHoc.
NE
PAs
ouvRIR.
servicing
to
qualified personnel.
k!
Recycling notice: Ifthe time comes and this apparatus
has
fulfilled
its destiny,
do
not
throw
it
out
intothe trash. It
has
to
be carefully
recycled for the good
of
mankind, by afacility 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 StartGuide
2

Connection Panel Features
R~J ,---Fuses ----,r-- Remote ------.,,--- Inputs ------,
I~ IJJ:4 AOOA" rr40A II +12V l©t Ground II Speakerlevel left~l
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level
LC-1.800 _@ +
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1. Fuses 40A- Replace the fuses only with the exact same style
and Ampere rating. Disconnect 12V power before changing
or
inspecting the fuses.
4. Power InputTerminal Ground- This screw terminal connects to
a good ground connection on the vehicle.
2. Power InputTerminal+ 12V- This screw terminal connects to
the+ 12V battery binding post of the vehicle. Use quality insulated
wiring
of the recommended wire gauge, such as wire gauge 4 or
thicker.Thinner wire may cause an overheating hazard due to the
large currents involved.
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-1.800 amplifierwill turn on.
Alternatively, you
can use the GTO feature of the amplifier so it
will turn on when an audio signal is detected at the speaker-level
or line-level inputs.
5. Speaker-Level Inputs- The LC-1.800 amplifier is supplied with
a standard 4-conductor plug that allows for easy installation and
removal.The speaker-level
output from amplifiers and factory
installed radios can connect here,
so the LC-1.800 will receive the
audio signals and do its subwoofer thing.The left and right audio
signals are summed internally
to produce a mono subwoofer sig-
nal. Make sure
that you follow the plus and minus polarity mark-
ings on the LC-1.800 and match
it to the polarity of the speaker
wiring. Do
not use the RCA Line-level inputs if you are using the
speaker-level inputs.
AudioCont~al®
Making Good Sound Great'M
3

4
------------------------------------------LC-1.800
6.
RCA
Analog Line-Level
Inputs-
The line-level
output
from
the
head
unit
or factory installed radios can connect here,
so
the
LC-1.800 will receive
the
line-level audio signals.The left and right
signals are summed internally
to
produce a
mono
subwoofer sig-
nal. Do
not
use
the
speaker-level inputs
if
you are using
the
RCA
line-level inputs.
7. Remote Control Connector-This connects
to
the
optional
ACR-1
remote control and allows you
to
remotely control
the
output
level.
8. Speaker-Level OutputTerminals-These screw terminals con-
nect
with
speaker wire
to
the subwoofer,
or
multiple
subwoofers.
Make sure
that
the average combined speaker impedance does
not
dip
below 2 Ohm.The LC-1.800
has
two
connections (plus and
minus).
Quick
Start
Guide

Control Panel Features
AccuBASS
®
--,
.
GTO
~
r-
Threshold
Level
ProtectiOn--,
·
..
·,·
..·
....
·.
Si
gnaiSense
~
~
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<el
lliiiill .,
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.,,
m
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Disable~
V/,J
I I
I
9 10
11
12
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.
An internal
blue
glow
will also emanate
from
the
heatsink area
to
indicate
that
the
power
is
ON.
There are times when this blue
glow
will
flash, such
as
during power-up, and when
the
protection circuits
have detected a problem.
10.
Protection
LED-
The LC-1.800 amplifier
has
built
in diagnostic
codes
to
tell you exactly
what
is
going
wrong
should the amplifier
detect
a problem.
(See
specs page for a list
of
diagnostic codes.)
If
the
protection
LED
should come on, read
the
red codes quickly
before
turning
off
the
system and investigating. Shorts, like
crushed-velvet
hot
pants, are
not
a
good
thing. Note
that
the blue
power
codes mentioned in
the
table are for
the
internal blue
glow
from behind
the
heatsinkarea, and
not
the
power
LED
which
is
green.
You
might
not
notice
the
subtle blue
glow
at first, unless
you are in
the
dark or
the
shade.
Crossover Gain
Frequency
Output
45:~~~0~~
vu·
rwJ
1
.180
,~.
,;'".
I ,i
13
14
15
r-
MIL
C-Source Clip
I
rGainMax
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16 17
11.
GTO Signal
Sense-
In
the
ON
position,
the
LC-1.800 amplifier will
turn
on gracefully when
it
detects
an
incoming audio signal, and
it
will
turn
off
after a period
of
time
when
the
audio signal fades
away
to
silence. In some situations, factory installed audio systems
may
turn
on or"wake up"due
to
convenience features like
door
chimes, alarms, and cell phone signals
that
trigger
the source
unit
in
the
vehicle
to
come on.
To
prevent these from
turning
your
audio system on unexpectedly, you can bypass the
GTO
circuit by
moving
the
GTO
switch
to
the
OFF
position and
use
a switched
12-volt signal connected
to
the
Remote In terminal instead.
12.
AccuBASS®
Enables/Disable-
Turns
the
AccuBASS®
circuit on or
off.
The
renowned
AccuBASS®
will
work
wonders on
the
lower
bass
of
the
speaker outputs.
AccuBASS®
Threshold-
Selects
the
level at which
the
AccuBASS®
will begin
to
work.
AccuBASS®
Level-
Adjusts
the
level
of
the
AccuBASS®.
AudioContftll®
Making
Good
Sound
GreatTM
5

6
------------------------------------------LC-1.800
13.Crossover Frequency- Since component speakers (like woofers)
are designed to reproduce certain frequency ranges, acrossover
allows you
to match the speaker to the appropriate frequen-
cy range. Most manufactures list a recommended crossover
frequency
as part of the speaker specifications. Choosing the
correct crossover point will provide increased speaker reliability
and
optimum sound quality.The LC-1.800 amplifier comes with
an adjustable-frequency 24/dB Octave Linkwitz-Riley crossover.
Adjust the crossover frequency on the
LC-1.800 amplifier to match
the value specified byyour subwoofer's manufacturer.
If you do
not know this value, start out with the crossover selector turned
all the way
to the left (counter clockwise) and adjust it until you
find a position
that suits your subwoofer system best.
14.Gain Control -This control allows you to adjust the overall
volume
output level in the normal way, with counterclockwise
decreasing the volume, and clockwise increasing. Note
that if
you have fitted the optional ACR-1 gain control, it should first
be set
to maximum, before setting this gain control.The setting
procedure
is given on the next page, and involves nerves of steel,
a steady hand, grit, determination, and the
thought that you are
making the world a better place for deep
bass.
15. Polarity- This switch allows you to select the polarity of the sub-
woofer, either 0 degrees (in-phase) or 180 degrees (out
of phase).
16.Source Clip LED- The LC-1.800 amplifier features our MILC™
(Maximum Input Level Control) patent-pending level-setting cir-
cuit
that prevents clipping and damaging distortion. It calculates
when the waveform
of an incoming audio signal is clipping, and if
it is, this LED will fulfill 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. Ifthe LED comes on during normal operation, you
should adjust
the level of the audio signals before they reach the
LC-1.800.
17.Gain Maximized LED- This LED indicates when the LC -1.800
amplifier gain
has been maximized for optimum performance.
Quick Start Guide

Quick Start
1. Itonly takes afew steps to get your LC-1.800 amplifier up and
running!
2. Undo the+ 12V and Ground connections to the car battery
before making any connections
to the amplifier.
3. When making connections, designate red RCA plugs as right,
and designate white, black,
or grey plugs as left.This is a good
idea for all signal connections made in your audio system. The
key
is consistency. Stick with the same color coding and you'll
reduce possible problems.
4. Use quality interconnect cables. We know from experience that
really cheap cables can cause a multitude of problems.They
tend
to break inside orcorrode, causing a loss of signal or hum.
They also have
poor shielding.
5. Connect the+ 12V input terminal of the unit to the+ 12V termi-
nal
of the vehicle battery. Use 4 gauge insulated wire orthicker.
6. Connect the Ground terminal of the unit to the chassis of the
vehicle.
Use 4 gauge insulated wire orthicker.
7. Connect the remote powerterminal 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 which is ex-
plained later in this manual.
8. Connect your audio inputs to the unit- either speaker-level or
line-level RCA ... not both.
9. Run the optional ACR-1 remote to the front of the vehicle to
adjust the bass level on the fly.
10. Connect your subwoofer (2 Ohms minimum load).
11. When all connections are made, reconnect the vehicle battery.
12. Adjust your input source gain using the Patent Pending MILC.
This will indicate if the incoming audio signals are clipping.
13. Set the LC-1.800 crossover to the frequency recommended by
the subwoofer manufacturer.
14. The optional ACR-1 adjusts the overall output level.
15. Enjoy the drive!
AudioCont~~al®
-----------------------
Making Good sound GreatTM
7

------------------------------------------LC-1.800
Power Connections
Head Unit
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Ground
In
this example,
the
head
unit
has
a+
12V
trigger
output
that
is
connected
to
the
LC-1.800 remote
input
terminal. When
the
head
unit
is
turned on,
it
will
turn
on
the
LC
-1.800 amplifier.
Alternatively,
the
GTO
signal sense feature can be
used
to
gently
turn
on
the
LC
-1.800 amplifier when
an
audio
input
signal
is
detected. (The connec-
tion
to
the
LC-1.800 remote
input
terminal
is
not
required when using
the
GTO
signal sense.)
Quick
Start
Guide
8

System #1:
Adding
a
Subwoofer
to
a FactoryRadio using Speaker-Level
Inputs
Factory
Radio
ACR-1
(optiona
l)
-=-~
A.CR-1
Speaker-level
ou
t
put
--
5
AudioControt
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Subwoofer
Audiocont.-ol
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------
--------------
----
------------------
-------
Making Gooa SoundGreat'"
9

--------------------------------------------LC-1.800
System #2: Adding a Subwoofer to an Aftermarket Head Unit
using Line-Level Inputs
Aftermarket
Head Unit
ACR-1
(optional)
~ ~
A.CR· I
Line-level
o ut puts
L/R
-- _J
LC-1.800
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L/R Subw
oofer
Quick St art Guide
10

ACR-1 Dash Control Installation
~
®
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The optional AudioControl
ACR-
1dash control
is
a remote level
control foryour
LC-
1.800 amplifi
er.
It
may be mounted underthe dash
using its own enclosure, orthrough acustom hole in the dash.The
level control knob should be
within
reach
ofthe
driver, and in aspot
where
the
LED
is
plainly visible. Disconnect
the
vehicle battery+1
2V
and Ground connections before installation.
Dash Bracket Installation:The dash control mounts
with
two
screws, which attach
to
the
underside
of
the
dashboard. Slide
underthe dash and place the dash control in its mounting
position, mark
the
two
best
mounting
holes, drill pilot holes, and
secure
with
two
screws.
Custom Installation: For
that
custom, finished look,
the
dash control
can
be flush-mounted directly on
the
dashboard (oranywhere
else). Disassemble the
ACR-
1from its enclosure.
Top Lid Removal
The
top
lid must be removed
to
gain
access
to
the
controls, and then
put
back on again
to
protectthe controls from dust bunnies.
Removal Procedure
1. Locate the
two
screws
that
hold
the
straight edge
of
the
lid
onto
the
connector side
of
th
e amplifier.
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2.
Use
the
supplied hex key
to
loosen both screws just enough
until this edge
of
the lid
can
lift
freely
up
justa little.(There
is
no
need
to
remove the screws all the way, in
case
you lose them.)
3. Slide
the
lid toward
the
heatsink fins
just
atad, before further
li
fting
the straight edge
of
the lid
about
2': then disengage the
remaining
two
points
of
contact (under
the
wavyedge).
4.
Place
the l
id
in a
safe
and handy place, ready for
the
time when
you have finished adjusting
the
controls
to
yourimmense satis-
faction.
AUdioContPOI
®
------------------------------------
----------
--
Making Good
sound
Great
'"
11

---------------------LC-1.800
Specifications
All specifications are measured at 14.4 VDC (standard automotive voltage). As technologyadvances, AudioControlreserves the right to continuously
change
our specifications, like our Pacific Northwestweather, although we are working on changing that as well.
The LC-1.800 Amplifier
Power Output (RMS) ............................ 500 Watts @4 Ohms
................................................. 800 Watts@ 2 Ohms
Input Voltage (RCA) Range ........................ 500mV to 6V RMS
Speaker-Level Input Voltage Range .................... 3V to 40V RMS
Total Harmonic Distortion ................................... < 0.01 o/o
5/N Ratio .......................... 102 dBa, Ref 500 Watts@ 4 Ohms
Damping Factor ............... 670@ 10 Volts, 4 Ohms Output, 100Hz
Bass Processing .......................................... AccuBASS®
Recommended PowerI Ground Wire Gauge ................. 4 Gauge
Fuse Rating
............................................. 2 X40 Amps
Crossover
... 24 dB/Octave Linkwitz-Riley, Adjustable From 30- 250Hz
PFM Subsonic Filter ........................................... 24Hz
Weight ....................................................... 4.5 lbs
Dimensions
.................................... 9
11
W X 8.0" D X 2.1
11
H
©2017 AudioControl. All rights reserved.
Warranty
For details of the limited warranty for your LC-1.800, please visit the following
page on
our website: http:/ /www.audiocontrol.com/warranty
Please keep your receipt in a safe place.
Power (Blue) Codes (These are the blue
LEOs inside the unit)
Power Up
ll ll ll ll 0 0 ll Q Q Q 0 0 Q Q Q Q
Reset Boot Q Q Q 0 0 Q Q 0 0 ll Q Q 0 0 ll Q
ProtectionActivated Q 0 Q 0 ll 0 Q 0 Q 0 Q 0 Q 0 Q 0
Protection (Red) Codes (This is the red Protection LED on the unit)
Short IQ 0 0 0 Q 0 0 0 Q 0 0 0 Q 0 0 0
2 Repeated Short
QOQOOOOOQOQOOOOO
3 UnderVoltage
QOQOQOOOQOQOQOOO
--
4 Over Voltage
QOQOQOQOOOOOOOOO
--
5 DC Offset
QOQOQOQOQOOOOOOO
6 Thermal Heatsink QOGOGOGOQOGOOOOO
7 Thermal Transformer
GOGOGOGOGOGOGOOO
AudioControl
2241 0 70th Avenue West, MountlakeTerrace, WA 98043 USA,
Phone [phone], FAX [phone]
e-mail: [email protected]
Quick Start Guide PN 914-016-0 Rev A