I have just completed a recap on a Krell KAV-250a/3 - one amp board was blown and it wasn't worth repairing so I have recapped just two of the 3 amp boards. I have been searching and can not seem to find anywhere what the bias should be set to, or how to set it...I know I should have found this out before starting but I emailed Krell and posted to another forum and got no replies.
Obviously there are only two adjustments so it won't be too hard to figure out which one does what...but what should the bias be set to - and where to measure it?
Obviously there are only two adjustments so it won't be too hard to figure out which one does what...but what should the bias be set to - and where to measure it?
I was never able to get any reply anywhere so I set the bias to 20mA on each side, when I checked they were at 18 and 22...it was not difficult to figure out which pot controls which - pretty sure the one near the middle is offset and the one near the front (left side in image) is for bias - but my memory these days...