Normal
Re: Two Bose 802 questionsIn my early years as a bench tech I repaired a number of CS800s as well as some Crown, Crest, Carver & Ashly amps. It seemed like they all would run close to the limit with sine waves into my dummy load. Then I got a QSC in (USA series I believe) and I found it wouldn't run a 1Khz sine wave for very long before going in some kind of protect mode. But, everything else seemed fine about the amp so I called QSC and got the story about the difference in crest factor for music vs my sine wave test. It made sense to me at the time (and still does). (I think some of the AB brand amps scaled back their power supplies and heatsinks in similar fashion.) I ended up testing the QSC with pink noise and all was fine. I sent that unit back to the carnival having learned something. And of course now almost everything is a scaled for higher peak voltages vs long term current.
Re: Two Bose 802 questions
In my early years as a bench tech I repaired a number of CS800s as well as some Crown, Crest, Carver & Ashly amps. It seemed like they all would run close to the limit with sine waves into my dummy load. Then I got a QSC in (USA series I believe) and I found it wouldn't run a 1Khz sine wave for very long before going in some kind of protect mode. But, everything else seemed fine about the amp so I called QSC and got the story about the difference in crest factor for music vs my sine wave test. It made sense to me at the time (and still does). (I think some of the AB brand amps scaled back their power supplies and heatsinks in similar fashion.) I ended up testing the QSC with pink noise and all was fine. I sent that unit back to the carnival having learned something. And of course now almost everything is a scaled for higher peak voltages vs long term current.
