Loudspeaker protection module

Loudspeaker protection module. Combines the anti-bump function, which prevents the classic thump on the woofer when the amplifier is switched on, with disconnection in case of a short circuit on the output stage.
Loudspeaker protection module - Image 1
Loudspeaker protection module - Image 3

SKU 1606-HR3772EAN 5410329047009Item type: Kit

Description

Loudspeaker protection system. Combines the anti-bump function, which prevents the classic thump on the woofer when the amplifier is switched on, with disconnection in case of a short circuit on the output stage. It works in a very simple way. The circuit keeps the speakers disconnected via a relay until it determines that the output voltage, with no signal present, is zero (typically 1 to 2 seconds). After this start-up interval has elapsed, a relay is energized that connects the load until the circuit, which must be powered together with the amplifier, is switched off.

Technical details

PCB dimensions 66 x 41 mm
AC supply voltage 12 Vac
DC supply voltage 15 Vdc
Current draw 80 mA
Switchable power at 4 ohms 400 W
Switchable power at 8 ohms 800 W
Maximum amplifier output voltage 70 V
Number of channels 2
Amplifier configuration single-ended
Anti-bump time 2 seconds
DC trigger voltage ±3V

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