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Run a thin wire from the power antenna or amplifier trigger wire of your radio to the REM terminal. This turns the amp on only when the radio is running. blaupunkt quadro amplifier bqa 120 manual new
Supports both 8-pin DIN (pre-amp) and standard RCA inputs.
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The Blaupunkt Quadro Amplifier BQA 120 is a classic piece of vintage car audio engineering. Released during the golden era of analog automotive sound, this four-channel "Quadro" amplifier remains highly sought after by retro car enthusiasts and audiophiles restoring 1980s and 1990s vehicles.
Clean the ground connection point to remove rust, paint, or grease. This turns the amp on only when the radio is running
Connect the ground terminal to a bare, unpainted metal chassis point on the vehicle. Keep this wire as short as possible (under 3 feet).
Check the inline fuse on the power wire and the fuse on the amplifier chassis itself. Verify that the remote turn-on wire is receiving +12V when the radio is switched on.