Clarion APA4203 Operation & Installation Manual page 17

OPERATION/INSTALLATION MANUAL
Power
Cable Calculator
Total System
Cable Cable Cable
Cable
Cable
Cable Cable Cable
Amperage Draw O'-4'
4'-r
T -10'
13' -16' 16' -19' 19' ■ 22' IT -28'
0 - 20 amperes 14 12
12
10 10 8 8 8
20 - 35 amperes 12 10
8 8
6 6 6 4
35 - 50 amperes 10 8 8
6 6 4 4
4
50 - 65 amperes
8 8 6 4 4
4 4
2
65 - 85 amperes 6
6 4 4 2 2
2 0
85 - 105 amperes
6 6 4
2 2 2 2
0
105- 125 amperes 4
4 4
2 2 0 0
0
125- 150 amperes 2 2
2 2
0 0 0 00
Figure 12. Use this chart to find a copper-wire gauge that will exhibit no
more than a 0.5 volt drop for a desired cable length. If aluminum or
tinned wire is used, select an even larger gauge size to compensate for
material difference. NOTE: Cable-size calculations take into account
terminal connection resistance.
SETTING GAIN
1. Turn both CH 1/2 and CH 3/4 GAIN controls to their minimum (far left)
positions. Also set BASS EXTENDER to 0 dB, and slide CH 1/2
FILTER and CH 3/4 FILTER to the proper positions for your application.
2. Turn the vehicle's ignition switch to the ON position. Then turn the
ON/OFF switch on the source unit to the ON position. Set all tone or
equalization controls to "flat" positions and turn loudness off.
3. Play a CD or tape and set the volume control at 75% of full level.
4. Verify that the POWER indicator on the amplifier comes on.
NOTE: When using an equalizer, set its frequency controls to "flat. "
5. Set the fader control (on the source unit) to full front and slowly
increase the CH 1/2 GAIN control for the front amplifiers (channels 1
and 2). Stop when you hear a slight distortion of audio. Set the fader to
full rear and repeat this step for the rear amplifier using the CH 3/4
GAIN control.
Setting Gain ♦ 17