[Andy Evans]

Eeyore wrote:
"Bob H." wrote:

No , they don't need a speaker *DC* protection.

IME, the relays needed for speaker protection of
direct-coupled amplifiers, have, over the service
life of good equipment, *more* of a sonic penalty
and much more of a reliability penalty than a
good transformer. And that's saying a lot.

How about just using a high grade audio cap instead of the relay?
If you want to get serious, a large film cap?

The whole raison d'etre of DC coupled amps is to get rid of that cap.

2000uf polypropylene btw ?

Graham

You say that, but I do have one 470uF polypropylene. Four of those? You
may ask if they are big...........