Rockville dB13 - DC Offset Protection

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DC Offset Protection: Should any DC voltage try to enter the amplier via the speaker terminals it will cause the amplier to shut down and not operate until this condition is remedied.
This circuit will also protect damaging high DC voltages from reaching your speakers should your amplier ever malfunction.
You must reset amplier by turning it OFF and then ON again by the Remote power connection after correcting a diagnostic condition. (Turn your radio off and then on again.)
If the amplier stays in protection after a reset, it is most likely faulty.
To reset the amplifier, you must first diagnose what caused the problem, correct the fault and restart the system.
MUTE CIRCUIT:
dB Series ampliers feature an anti-thump, mute and delay circuit. This eliminates irritating speaker damaging turn-on and turn-off transients normally experienced with less expensive
ampliers.
BATTERY VOLTAGE:
Rockville dB Series ampliers are rated and regulated to 13.8 volts and below. Increasing voltage to 14.4 volts will increase the power output of the amplier in the same proportion.
Maximum input voltage is 14.4 volts while the minimum voltage is 12 volts.
DO NOT EXCEED 14.4 INPUT VOLTAGE.
Features