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features and specifications
4 ch amp PLMRA420
frequency response
power supply voltage
output power @ 14.4v DC, 1KHz
RMS Power @ 4 Ohms
RMS Power @ 2 Ohms
Maximum Power Output
input sensitivity
low level inputs
high level inputs
maximum current draw
dimensions (W x H x L)
mm
inches
input impedance
low level inputs
high level inputs
matching speaker impedance
stereo mode
bridged mode
crossover mode selector
input level control
low pass frequency control
high pass frequency control
bass boost level control
low level inputs
high level inputs
power LED
protection LED
power fuse
power terminals
speaker connections
when used with normal, full range systems, set this switch to “FULL.” If
you wish to use the internal crossover to power a driver of specific frequency
range, use the “LOWPASS” or “HIGHPASS” settings.
use this control to match the outputs of your head unit to the amplifier.
Starting with your head unit set at about the 2 o’clock position, increase
the amp level control until distortion begins to occur, and reduce slightly
from this point.
when the crossover selector switch is in “low pass” mode, this control sets
the upper frequency limit for audio program sent to the speakers.
when the crossover selector switch is in “high pass” mode, this control
sets the lower frequency limit for audio program sent to the speakers.
this control permits adjustment of the bass level up to an increase of
approximately 18 dB.
this amp features gold-plated RCA input jacks for high impedance input.
Use these with car stereo output which uses RCA-type connector cables.
if your car stereo lacks RCA-type output jacks, you may connect speaker
output leads to these input connectors.
this indicator is illuminated when power is applied.
this indicator is illuminated when built-in protection circuitry is activated.
the fuse protects the amplifier and your car’s electrical system from short
circuit conditions.
use these connectors to deliver power, ground and remote turn-on control
to the amplifier.
these terminals are 14K gold plated to guarantee high conductivity and
minimum signal loss.
PLMRA420
4 channel amplifier
35 Watts x 4
50 Watts x 4
250 Watts x 4
15 Hz-30 KHz
250mV
2.5V
14.4V DC Neg. Ground (10.5-16V)
2-4 Ohms
20A
4-8 Ohms
10K Ohms
100 Ohms
276 x 69.5 x 305
10.9 x 2.7 x 12
electrical connections
2 ch amps PLMRA220
PLMRA220
to remote turn-on
+12V
head unit
12V battery
GROUND
+12V BATT
REM
FUSE