Hey really enjoying this forum, already got some great advice and can't believe what a great place this is.

Here's my latest brainstorm. I have  BXR 400 I used as a gigging amp for several years. I've always wondered if this two power amp Bi-amp for two different speakers setup could be readily bridged so it is a sho-nuff 400 watt amp feeding a single cabinet with all the watts.

Is this possible or just a crazy idea ?  :duh   It's a really well made and powerful amp, I hate to just let it slip away. I would like to make it into a more useable configuration. Thanks for any info.

Hey all,
Decided to try to learn something about SS amp repair and troubleshooting, what a resource this is. I have several older amps with issues, hope to have then all up to par with the help I can get. Many thanks.

My M80 bass chorus combo has a hum when powered up, and a noticeable hiss as well. I have read several threads about the filter caps being a common problem, as well as other loose solder joints. Should I try this first , and then go from there ? Any advice greatly appreciated. I don't know of any schematic out there in the cloud, I have searched but don't necessarily know, nothing jumped out at me in searches plainly labeled as such.

I suspect perhaps more than one problem, the hum stays constant, while the hiss is affected by preamp controls, and the first (passive? ) input jack is noisy, it looks really worn, will emit a loud pop when a plug is inserted or removed, and really ups the noise game if I crank up the bass frequencies. The second input ( rh ) is quiet.

When I power up the speaker cone jumps back a little but then seems to slowly come back. The volume tone and chorus controls work normally and fully, I do notice a change in the noise when engaging the chorus or compressor switches.

Hope this helps to get started. It's incredible that there are folks here who share their expertise just for the love of the craft. Many thanks again.   :dbtu:

I have a basic meter, and have a good knack for troubleshooting, developed in other trades and endeavors. Any help greatly appreciated