FS: Couple of SSR DC speaker protect modules
2 off speaker DC protect modules.
Solid state relay.
Power up detect with four second mute delay.
Power down detect with mute.
Up to 350WRMS into 4 ohms or 700WRMS in 8 ohms.
£9.99 each plus p+p
p+p is £3.99 to uk and £10.99 rest of world.
Requires local mains transformer 9-0 9-0 2VA or more per speaker protect unit (can't use same transformer for both !)
2 off speaker DC protect modules.
Solid state relay.
Power up detect with four second mute delay.
Power down detect with mute.
Up to 350WRMS into 4 ohms or 700WRMS in 8 ohms.
£9.99 each plus p+p
p+p is £3.99 to uk and £10.99 rest of world.
Requires local mains transformer 9-0 9-0 2VA or more per speaker protect unit (can't use same transformer for both !)
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SSR speaker protect gives better performance than mechanical relays.
No mechanical parts to go wrong.
No mechanical parts to go wrong.
I would interpret this question as relating to the dc protection threshold rather than the max current the relay can withstand.
The specs I gave relate to max power into the speaker impedance which relates to max current through the SSR.
The DC protection threshold is over +/- 2 volts for greater than 250mS.
Two left £9.99 each plus p+p
p+p is £3.99 to UK and £10.99 rest of world.
Requires local mains transformer per pcb.
p+p is £3.99 to UK and £10.99 rest of world.
Requires local mains transformer per pcb.
Last edited: