I've had great support from Classe over the years, even on my 10 year old cav-75 long since out of warranty. I had an issue with it over heating and triggering the protection circuits (and occasionally popping a fuse in the process). Classe said bias current can drift over time and they had trim pots to adjust. My dealer made the adjustment and now the amp runs very cool.
But I started thinking, doesn't bias current and the heat output reflect how long the amp stays in Class A mode? I wonder if by trimming the pots so the amp runs cool I've given up some sound quality in the process.
Also, unrelated, the amp "squeals" a bit when I turn it off. When there's a source present you can actually hear the content playing, presumably from the remaining charge in the caps. The distortion picks up as it runs out of juice. I was wondering if that distortion is essentially the amp clipping due to lack of power and if it presents any danger to my diamond tweeters.
But I started thinking, doesn't bias current and the heat output reflect how long the amp stays in Class A mode? I wonder if by trimming the pots so the amp runs cool I've given up some sound quality in the process.
Also, unrelated, the amp "squeals" a bit when I turn it off. When there's a source present you can actually hear the content playing, presumably from the remaining charge in the caps. The distortion picks up as it runs out of juice. I was wondering if that distortion is essentially the amp clipping due to lack of power and if it presents any danger to my diamond tweeters.
Comment