Radio Shack P L A 2 1 7 0 warranty A 4 3 7, H a m p P L a 4 3 7

f e a t u r e s

4

crossover mode selector

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.

input level control

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.

low pass frequency control

when the crossover selector switch is in “low pass” mode, this control sets

the upper frequency limit for audio program sent to the speakers.

high pass frequency control

when the crossover selector switch is in “high pass” mode, this control

sets the lower frequency limit for audio program sent to the speakers.

Remote Bass Boost

Plug in the Remote Bass Boost Control wire in here.

bass boost level control

this control permits adjustment of the bass level up to an increase of

approximately 18 dB.

low level inputs

this amp features gold-plated RCA input jacks for high impedance input.

Use these with car stereo output which uses RCA-type connector cables.

high level inputs

if your car stereo lacks RCA-type output jacks, you may connect speaker

output leads to these input connectors.

power LED

this indicator is illuminated when power is applied.

protection LED

this indicator is illuminated when built-in protection circuitry is activated.

power fuse

the fuse protects the amplifier and your car’s electrical system from short

circuit conditions.

power terminals

use these connectors to deliver power, ground and remote turn-on control

to the amplifier.

speaker connections

these terminals are 14K gold plated to guarantee high conductivity and

minimum signal loss.

c h a m p P L A 4 3 7 0

P L A 4 3 7 0

4 channel amplifier

output power @ 14.4v DC, 1KHz

RMS Power @ 4 Ohms

100 Watts x 4

RMS Power @ 2 Ohms

150 Watts x 4

Maximum Power Output

500 Watts x 4

frequency response

15 Hz-30 KHz

input impedance

low level inputs

10K Ohms

15

high level inputs

100 Ohms

input sensitivity

low level inputs

250mV

high level inputs

2.5V

power supply voltage

14.4V DC Neg. Ground (10.5-16V)

matching speaker impedance

stereo mode

2-4 Ohms

bridged mode

4-8 Ohms

maximum current draw

50A