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7
. FINAL SYSTEM CHECKS
1. Start the engine and turn on the source unit. After a short two-second delay,
slowly raise the volume and listen to the sound. If you hear any noise, static,
distortion, or no sound at all, check the connections, and also refer to the
'Troubleshooting" section. Depending on your system design, the levels may
become quite loud even a low volume control settings. Until you get a "feel" of
the power of the system, use care when adjusting the controls.
2. Adjust the balance control from left to right and listen to the results. Audio imag¬
ing should match control settings.
8
.
TROUBLESHOOTING
Symptom
Cause
Solution
No audio
Low or no remote turn-on voltage
Blown fuse
Power wires not connected
Speakers not connected or blown
Check remote connections at amplifier and source unit.
Replace with new fast-blow fuse (same rating).
Check power and ground connections at amplifier; check battery connections.
Check speaker connectors at amplifier; measure coil impedance.
Audio cycles on and off
Thermal protection circuits are shutting amplifier off.
Check location for adequate ventilation; consult an authorized Clarion dealer.
Distorted sound
Gain control is not set properly, or damaged speaker
cones
Adjust gain control; check each speaker cone for signs of damage (e.g., frozen
cone, burning smell, etc.).
Whining or ticking noise in the
sound with engine on
Amplifier is picking up alternator noise or radiated
noise
Check power and ground connections on amplifier; check or move audio
cables; install an in-line noise filter on source unit's power wire; check alternator
and/or voltage regulator; test for weak battery or add water to battery.
9 .
SPECIFICATIONS
3. Increase the volume and verify that the APA2150G amplifier reproduces audio
without distortion at all frequencies. If you hear distortion, check the connections
and verify that the gain controls are set correctly. Another possibility is damaged
(or under-powered) speakers. Once again, refer to the "Troubleshooting" section
for additional help.
Maximum Output:
Rated Output Power:
Frequency Response:
Harmonic Distortion:
1 SOW
x
2 (2-channel mode)
75W
x
2 (2-channel mode)
(20Hz - 20kHz, 0.02%, 4fl, with 2-channel
simultaneous output)
100W
x
2 (20Hz ~ 20kHz, 0.02%, 2Q)
200W
x
1 (1-channel mode)
10 - 50,000Hz
0.02% (20Hz - 20kHz, 2-channel mode, 75W
x
2
simultaneous output)
S/N Ratio:
117dB
Applicable Speaker lmpedance:4Q
(2£1
~ 8£2, channel mode: Stereo)
Input Sensitivity:
Low-Pass Filter/High-Pass
Filter Cut-off Frequency:
Bass Extender:
Power Source Voltage:
Ground:
Power Consumption:
Auto-fuse capacity:
External dimensions:
Weight:
200mV ~ 5,000mV
50Hz ~ 200Hz (-24dB/oct)
+1dB~+12dB (at 50 Hz)
14.4V
Negative
22A (with 75W
x
2 rated output)
1.0A (amplifier ON, no input)
30A
x
1
14-1/2"(367mm) Width
x
2-3/4"(70mm) Height
x
8-5/8"(220mm) Depht
3.9 kg (137oz)
8 ?
o ■
■ 2 -3/4".
(70 mm)
75«5
APA2I50G
5-1/2"(14c|mm)
8-5/8M(220 mm)
* For improvement purposes, specifications and design are subject to change without prior notice.
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