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APX2120/APX4240/APX1300 15
Setting the crossover
Clarion amplifiers feature fully-adjustable crossovers.
1. Using the X-Over mode switch, select either LP (low pass) or HP (high pass) or
OFF for full range.
2. Using the Freq (Hz) control, select the frequency.
Setting the bass boost
1. Initially set the bass boost control to off.
2. Listen to a variety of music styles (for example, rock, rap, etc.) and switch the bass
boost control on until you notice an increase in low bass response.
CAUTION
If you hear a pop caused by speaker overexertion, lower the
bass boost to prevent damage to the speaker.
Final system checks
1. Start the engine and turn on the source unit.
2. After a two-second delay, slowly increase the volume control and listen to the audio.
If you hear any noise, static, distortion or no sound at all, check the connections and
refer to Troubleshooting. Depending on your system, the volume may become quite
loud even at low level settings. Until you get an “audio feel” for the system’s power,
use care when adjusting the controls.
3. Turn the balance controls to their extreme positions and listen to the results. Audio
output should match control settings (audio from the left speaker when balance is
left).
4. Increase the volume and verify that the amplifier reproduces the audio at full
frequencies without distortion.
If you hear distortion check the connections and verify that the gain control is set
correctly. Another cause of distortion could be underpowered or damaged speakers.
Refer to Troubleshooting.
AMPSOwnersManual.pmd 2005-12-13, 17:0215