In article ,
Phil Allison wrote:
Dave Plowman (News) wrote:


** The simple solution is to add a DPDT relay to mute both inputs of
the 405 whenever there is no AC power.

Ideally, a miniature sealed type with gold contacts powered by
rectified AC from the secondary of the transformer - plus a suitable
series resistor.

You can use the contacts to either ground the two signals or open
circuit them.

Snag is this squawk happens immediately at switch off. So the relay
would have to operate extremely quickly.



** With the relay powered with rectified AC only, the switch off time is
less than 15mS.

That I why I suggested it.

Why not actually try it ?


If you'd seen an AM8, you'd know there's not exactly much space inside it.
It could be done, but not easily. It would probably need to be sited on
the far side of the amp from the crossover.

I was more hoping someone could come up with why some of these crossovers
squawk, but some not.

--
*When it rains, why don't sheep shrink? *

Dave Plowman London SW
To e-mail, change noise into sound.