pre amp output Delay board
Pre-amp output delay board, delay time can be adjustice from 5 sec to 2 minute
Loudspeaker protect circuit Loudspeaker protect circuit using advance Protect IC NEC upc1237HA, including turn on/shut down power delay, over current protect, over loading protect and short circuit protect, two channel design can be use with MOSFET and Bipolar transistor
Power Soft start after power on the relay is switch on and a resistor is connected in serial bewteen the main and the loading, after 5 to 8 seconds and return to normal connection. board size: L 105mm X W 57mm (have 115V or 220V version)
Loudspeaker delay not a Loudspeaker protect circuit only delay the output for a few seconds to protect the Loudspeaker when you power on the Amplify
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