skoora
Well-known member
I’ve long had a bias mod on my stage II and have found myself living in Spongy a lot these days. Has anyone done, or know how to do dual bias controls where you can set optimal bias for bold and spongy separately and have it switch with the bold and spongy switch?
When I put Bold at 70% dissipation (about 38mA) switching to Spongy drops it to 24mA but that’s less than 50% with where the plate voltage drops to. Spongy gets very nice when you get it back up into the 30’s but if you were to switch back to bold, you’ll be at around 50mA, well over safe dissipation.
I don’t trust myself to not absent mindedly do just that if I set the bias I want for Spongy.
When I put Bold at 70% dissipation (about 38mA) switching to Spongy drops it to 24mA but that’s less than 50% with where the plate voltage drops to. Spongy gets very nice when you get it back up into the 30’s but if you were to switch back to bold, you’ll be at around 50mA, well over safe dissipation.
I don’t trust myself to not absent mindedly do just that if I set the bias I want for Spongy.
