Greetings:
I recently purchased a B&K AV5000 in need of repair. This amplifier is rated at 125 watts per channel into 8 ohms and has 5 channels.
What I'd like to do while I'm repairing it, is bridge pairs of channels to give more power into two channels for stereo use.
While I've repaired equipment as a hobby for nearly 25 years, I've never designed circuits so hence don't understand how I would go about bridging this unit. I'd rather not fry stuff experimenting, so I thought it might not hurt to ask if some of you folks with expertise would be willing to help.
I've attached the schematic for reference. I'm looking for the best solution that would also keep it stable.
For reference, per reviews, B&K did a very nice job on this amp. It's biased fairly high so it runs hot. I've read it tends to have the nice, smooth midrange that fets are so good at when the bias is turned up. The price was right and I figured it might make a nice two channel amp. I'd just prefer to have more bottom-end grunt if I can get it.
Any help would be much appreciated!
Thanks in advance,
Steve

I recently purchased a B&K AV5000 in need of repair. This amplifier is rated at 125 watts per channel into 8 ohms and has 5 channels.
What I'd like to do while I'm repairing it, is bridge pairs of channels to give more power into two channels for stereo use.
While I've repaired equipment as a hobby for nearly 25 years, I've never designed circuits so hence don't understand how I would go about bridging this unit. I'd rather not fry stuff experimenting, so I thought it might not hurt to ask if some of you folks with expertise would be willing to help.
I've attached the schematic for reference. I'm looking for the best solution that would also keep it stable.
For reference, per reviews, B&K did a very nice job on this amp. It's biased fairly high so it runs hot. I've read it tends to have the nice, smooth midrange that fets are so good at when the bias is turned up. The price was right and I figured it might make a nice two channel amp. I'd just prefer to have more bottom-end grunt if I can get it.
Any help would be much appreciated!
Thanks in advance,
Steve

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