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Фрагмент инструкции
Turn up the receiver volume slightly. All speakers should operate. If not, check wiring connections at amplifier and speakers. Test Speaker Connections These tests make sure the speakers are connected properly. If speakers don’t play at all, one (or both) speaker wires may be disconnected. Remote Input Level Control The Power 900 and 1050 come equipped with a Remote Input Level Control. The Remote Input Level Control allows the input level to be adjusted from an alternate location. It can be mounted under-dash or in-dash. When the amplifier is used to drive subwoofers and the low pass crossover is activated, the Remote Input Level Control can be used as a “remote bass level control”. This enables you to control the bass level independent from the rest of the system. This is convenient for system tuning and/or when playing many different types of music. The Remote Input Level Control uses a 6-pin modular cable for connectivity. Simply plug the 6-pin modular cable into the amplifier and then into the Remote Input Level Control to activate the circuit. Power Min Max L R L R OUTPUT INPUT 0dB 12dB 10Hz 40Hz 40Hz 300Hz 4V 0.4V BASS BOOST SUB SONIC LOW PASS LEVEL REMOTE CONTROL POWER PROTECT REMOTE CONTROL POWER Amplifiers 12 Troubleshooting NOTE: If the protection light is activated with no speakers connected to the amplifier, and all the power connections are correct, this would indicate an internal problem with the amplifier. Problem Possible Cause Corrective Action Amplifier does not turn on No power to +12V terminal Check fuse(s) No power to REM terminal Check head unit fuse(s) and wiring Blown main fuse at battery Replace fuse and identify cause of failure Blown fuse at amplifier Replace fuse and identify cause of failure Faulty ground Re-ground main power ground to bare metal chassis Volume control too sensitive Input level control adjusted too high Re-adjust the input level (refer to page 8) Distorted sound Input level control adjusted too high Re-adjust the input level (refer to page 8) Blows fuse(s) at amp Power wires connected backwards Reconnect power wires properly Internal problem with amp Take unit for service Engine noise / Alternator whine Ground loop(s) Use good quality shielded RCA cables Faulty ground at amp Re-ground amp to clean bare metal chassis Faulty ground at head unit Re-ground head unit to clean bare metal chassis Inductive coupling Re-route RCA and/or speaker wires away from factory harnesses Input level on amp set too high Re-adjust input level (refer to page 8) Thermal protection activated Amplifier driving 2 ohm load for long durations If the amplifier “thermals” frequently while driving subwoofers, install fan to keep amp cool. Short circuit protection activated Blown speakers Check all speakers Speaker wire(s) shorting to ground Check for faulty wiring Defective crossover Faulty passive crossover Low impedance protection activated Amp connected to improper load Check speaker connections Amp will not drive a 1 ohm mono load, 2 ohm minimum in mono configuration Verify that speakers are connected properly Speakers defective/ blown Check speakers Faulty passive crossovers Check crossovers Poor bass response Speakers out of phase Check speaker polarity; reverse the connection to one speaker only if two subwoofers are connected to the amplifier. POWER Amplifiers 13 CEA Power Output RMS Power Output @ 1% THD+N, 14.4VDC Power 400 Power Output: 60 watts RMS X 2 channels into 4-ohms @ < 1% THD+N Signal to Noise Ratio: 100dBA below reference (Reference: 1 watt, 4-ohms) Additional Power Output: 80 watts RMS X 2 channels into 2-ohms @ < 1% THD+N 160 watts RMS X 1 channels (Bridged Mono) into 4-ohms @ < 1% THD+N Frequency Response: 10Hz to 60 kHz, -3dB (Reference: 1 watt) Dimensions: L9.5" x H2.5" x W9.0" Power 760 Power Output: 60 watts RMS X 4 channels into 4-ohms @ < 1% THD+N Signal to Noise Ratio: 100dBA below reference (Reference: 1 watt, 4-ohms) Additional Power Output: 80 watts RMS X 4 channels into 2-ohms @ < 1% THD+N 155 watts RMS X 2 channels (Bridged Stereo) into 4-ohms @ < 1% THD+N Frequency Response: 10Hz to 60 kHz, -3dB (Reference: 1 watt) Dimensions: L12.5" x H2.5" x W9.0" Power 880 Power Output: 125 watts RMS X 2 channels into 4-ohms @ < 1% THD+N Signal to Noise Ratio: 100dBA below reference (Reference: 1 watt, 4-ohms) Additional Power Output: 200 watts RMS X 2 cha...
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