Specifications
CEA-2006 Power Standard Specifications
(reference: 14.4VDC, 20Hz~20kHz)
Power Output (14.4VDC, 20Hz ~ 20kHz):
XPR520 50 Watts RMS x 2 channels @ 4 ohms and ≤ 1% THD+N 75 Watts RMS x 2 channels @ 2 ohms and ≤ 1% THD+N
150 Watts RMS x 1 channel @ 4 ohms (bridged) and ≤ 1% THD+N
Total dynamic power: 400 Watts @ 4 ohms
Signal to noise ratio: 75dBA (reference: 1 watt into 4 ohms)
Frequency response: 20Hz ~ 20kHz
Amplifier dimensions: 2.78" (H) x 9.09" (W) x 10.56" (D)
Troubleshooting
Problem | Cause | Action | |
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| +12V wire not connected or incorrect voltage | Check connections for proper voltage | |
Unit will not turn on | REM wire not connected or incorrect voltage | (11~16VDC) | |
(no power LED indicator) | GND wire not connected | Check connection to ground | |
| Fuse(s) blown | Replace fuse(s) | |
| Speaker wires not connected | Check connections at speakers | |
| Volume turned all the way down | Increase volume level at head unit | |
Unit has power - LED is | One or more speaker wires touching each | Insulate all bare speaker wires from each | |
other or touching chassis ground | other and chassis ground | ||
blue (but no sound) |
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Speaker(s) defective or damaged | Check/replace speaker(s) | ||
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| Input signal not connected | Check high or low level inputs for proper | |
| connection | ||
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| Incorrect fuse rating | Use fuse(s) with correct rating | |
Unit blows fuse(s) | +12V wire touching chassis ground | Check for pinched wire | |
| Speaker(s) defective or damaged | Check/replace speaker(s) | |
| Bad ground connection | Make sure amplifier is grounded to clean | |
| bare metal | ||
Engine noise |
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Signal ground loop or RFI (radio frequency | |||
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| interference) | current wiring | |
| One or more speaker wires touching each | Insulate all bare speaker wires from each | |
| other or touching chassis ground | other and chassis ground | |
LED illuminates red | Speaker(s) defective or | Check/replace speaker(s) | |
(protect mode) | damaged internally (shorted) | ||
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| Speaker load less than 2 ohms (stereo) | Adjust speaker load - amplifier will not | |
| Speaker load less than 4 ohms (bridged) | operate at less than 4 ohms when bridged | |
Distorted audio output | Incorrect input signal type or | Check connections and reduce/adjust input | |
| input level too high | level | |
Low audio output | Incorrect input signal type or | Check connections and increase/adjust | |
input level too low | input level | ||
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Weak bass | Speaker(s) are wired out of phase | Check (+) and | |
(Observe correct polarity) | |||
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