DIY - Loudspeaker Protection

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quad 405

MARANTZ - Discover a range hifi American vintage, and quadraphonic stereo: amplifiers, power amplifiers, integrated tuners, occilloscope tuners, receivers.

DIY - Loudspeaker Protection - Quad 405

velleman kit k4700

2 CHANNEL LOUDSPEAKER PROTECTION - Velleman k4700

This stereo loudspeaker protection will protect
the loudspeakers against the switch-impulsions and
the direct current component on the output of the
connected amplifier. Suitable for: Amplifiers with
symmetrical power supply Amplifiers with asymmetrical
power supply.

Specifications :

Switch-delay: +/- 6 seconds
DC protection: +1V/-1V
Max. input voltage: 200Vpp + DC
Max. switching current: 10A
LED indication for: WAIT (switch-on delay)
and ERROR (DC on speaker output)
Supply voltage: 220VAC
PCB dimensions: 55 x 125mm (2.2" x 4.9")

A very good kit, well designed notice. To install in replacement
of the existing protection circuit, here on the Quad 405.

Removal of the existing protection circuit