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LA-978
2CH amplifier
2 X 100W
2 X 150W
2 X 600W
1 X 1200W
2-4 OHMS
4-8 OHMS
30 A
12.2 X 2 X
13.5
(
309 X 53
X 343)
8.2(3.73)
LA-1478
2CH amplifier
2 X 125W
2 X 200W
2 X 800W
1 X 1600W
2-4 OHMS
4-8 OHMS
30 A
12.2 X 2 X
15
(
309 X 53
X 381)
8.8 (4.0)
LA-1878
2CH amplifier
2 X 150W
2 X 225W
2 X 1000W
1 X 2000W
2-4 OHMS
4-8 OHMS
40 A
12.2 X 2 X
17
(
309 X 53
X 432)
10.1 (4.62)
LA-2078
2CH amplifier
2 X 200W
2 X 300W
2 X 1200W
1 X 2400W
2-4 OHMS
4-8 OHMS
50 A
12.2 X 2 X
19
(
309 X 53
X 482)
11.4 (5.2)
· Phase Control 0-180 degree
· Remote Bass Control
· Input Impedance : 10K Ohms
· Soft Turn On/Off
· Advanced Protection Circuitry
· S/N Ratio:>90dB
LA-2278
2CH amplifier
2 X 300W
2 X 450
W
2 X 200
0W
1 X 4000W
2-4 OHMS
4-8 OHMS
70 A
12.2 X 2 X
21
(
309 X 53
X 532)
12.8 (5.8)
LA-2478
Mono channel amplifier
200W mono
335W mono
2000W mono
20-250Hz( 3dB)
10 k-Ohms
100 Ohms
250 mV
4V
14.4 VDC/NEG GD
(10.5-16V)
LA-478/578/778/978/1478/1878/2078/2278
Features and Controls
LA-2478 also feature:
2 OHM
STABLE
40 A
12.2 X 2 X
12
(
309 X 53
X 305)
7.3 (3.34)
Legacy American Amplifier Features
Protection LED Indicator
The protection circuitry in the amp will disable it if it
senses an input overload, speaker short circuit, or
thermal overload conditions. Should this occur, the
PROTECT LED will be illuminated. At that time, it is
important that you check to determine what has caused
the protection circuitry to become activated.
If the amp shut off because of a thermal overload,
allow it to cool down before attempting to restart.
If the shutdown occured because of an input overload,
or speaker short circuit, be sure to correct these
conditions before attempting to restart the amp.
To reset the amp, turn the REMOTE power off and on
again.
Power LED Indicator
This LED is illuminated when the REMOTE ON
system is turned on.
11
This unit is provided with gold-plated RCA input
jacks. Using RCA-RCA type patch cords, connect
these inputs to the RCA outputs from your head
unit.
Low Level Input (High Impedance)
10
High Level Input (Low Impedance)
Use these if your car stereo does not have
RCA output jacks: connect the speaker output from
the head unit to these inputs
9
Permits you to adjust the crossover frequency from
80 Hz to 2.5 kHz to suit the tweeters
High Pass Control
8
Permits you to adjust the crossover frequency from 35
Hz to 400 Hz to suit the subwoofers
Low Pass Control
7
Allows you to increase the bass signal level sent to the
speakers
Bass Boost Control
6
In a full range system, set this to FULL. If the amp is
being used to power a crossover system, set to either
HPF or LPF as needed.
Crossover Mode Switch
5
Input Level Control
Use this control to match the output of the head unit
to the amplifier. If distortion is present, reduce the
setting of this control.
4
Power Supply Terminals
3
Protects the amplifier as well as the automobile electrical
system from short circuit conditions.
Fuse
2
These terminals are 14K Gold plated for high conductivity
and minimum impedance loss. The terminals face
upwards for easy wiring in tight situations.
Speaker Terminals1
12
Plug in the Remote Bass Boost Control wire in here.
13
Remote Bass Boost
specs
Features and Specifications
· Mono Block Subwoofer Amplifier
· 2 Ohm Stable
· MOSFET Power Supply
· Gold Plated RCA Inputs for Line Input & Bypass Output.
· Gold Plated Terminals for Speaker Output and Power Input.
· Thermal, Overload and Short Protection
· Variable Sub-sonic Filter (15Hz~40Hz, 24dB/Octave)
· Variable Low-pass Filter (20Hz~250Hz, 24dB/Octave)
10Hz-30 kHz
10 k-Ohms
100 Ohms
250 mV
2.5V
14.4 VDC/NEG GD (10.5-16V)
Specifications
OUTPUT POWER
RMS @ 4 OHMS
RMS @ 2 OHMS
MAX OUTPUT
BRIDGE MODE
FREQUENCY RESPONSE
INPUT IMPEDANCE
LOW LEVEL INPUTS
HIGH LEVEL INPUTS
INPUT SENSITIVITY
LOW LEVEL INPUTS
HIGH LEVEL INPUTS
POWER SUPPLY VOLTAGE
MATCHING SPEAKER IMPEDANCE
STEREO MODE
BRIDGED MODE
MAXIMUM CURRENT DRAW
DIMENSIONS, W x H x L, inches
(mm)
NET WEIGHT, LBS (KG)