Replace with proper fuse size check speaker impedance load, if below 20 stereo or 40 mono rewire speakers to achieve a higher impedance check power and ground connections and repair as needed amplifier fuse blowing too much current being drawn fuse used is smaller than recommended check speaker impedance load, if below 20 stereo or 40 mono rewire speakers to achieve a higher Impedance check power and ground connections and repair as needed replace with proper fuse size Trouble Shooting Symptom no output Possible Cause Action to Take Symptom ![]() Short in power wire or incorrect check speaker impedance load, if below 20 stereo or 40 mono rewire speakers to achieve a higher ImpedanceĬheck power and ground connections and repair as needed ![]() Short in power wire or incorrect power connections Polarity causing cancellation at low frequenciesĬrossover set incorrectly check speaker polarity and repair as needed reset crossovers referring to the multi-cross crossover configuration section of this manual for detailed Instructions battery fuse blowing impedance load to amplifier too low Symptom Possible Cause Action to Take distorted output (contd ) speakers are blown check system with known working speakers and repair or replace as needed poor bass response speakers wired wrong Connecting these voice coils in parallel will result in a 20 nominal Impedance, which is not recommended for use with bridged channels of your amplifier. Some subwoofer models feature a dual 40 voice coil design. Connecting two such speakers in parallel will result in a 20 impedance load as seen by the amplifier. Most speakers designed for car audio operation are 40 impedance. Continuing to operate the amplifier under these conditions is not recommended and will reduce its life expectancy. ![]() When the chassis cools down, normal operation will resume. Although operation with lower impedances is not likely to cause immediate damage to the internal circuitry, the unit will most likely overheat, causing the thermal protection circuitry to shut down the amplifier. The recommended minimum load impedance is 30 for subwoofer use, and 40 for full range operation.
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