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Hi.

I have had two combo amps die recently. A 70W 15" Randall bass combo and a fender stage lead 212.

I've already harvested the Randall for parts, and the transformer actually caught on fire in the fender, so it may be non salvageable. So, I'm considering purchasing a couple of ~90W power amps and making some new pre-amps to use the still functional enclosures and speakers.

Tube or solid state is fine, any tips or suggestions?

timefortea wrote:Hi.

I have had two combo amps die recently. A 70W 15" Randall bass combo and a fender stage lead 212.

I've already harvested the Randall for parts, and the transformer actually caught on fire in the fender, so it may be non salvageable. So, I'm considering purchasing a couple of ~90W power amps and making some new pre-amps to use the still functional enclosures and speakers.

Tube or solid state is fine, any tips or suggestions?

You could go either way with the Pre and Power Amps, or even make it a hybrid, a mate of mine got me to do some work on a guitar amp for him, it had a solid-state preamp and a Tube power amp, sounded pretty good, the power Tubes were wired in a configuration that I had never seen before.....

There were some nice vintage Musicman amps with solid state preamps and 100 watt tube power amps, IIRC HD series like HD115, HD130, HD150. Really warm "king of clean" type of tone for soul, reggae, country etc. Not exactly blues or rock amps unless you are gonna use lots of pedals.

timbo_93631 wrote:There were some nice vintage Musicman amps with solid state preamps and 100 watt tube power amps, IIRC HD series like HD115, HD130, HD150. Really warm "king of clean" type of tone for soul, reggae, country etc. Not exactly blues or rock amps unless you are gonna use lots of pedals.

Yeah, that's the make of amps I was talking about in my last post......


I had to replace the IC sockets and all the ICs, plus the driver transistors and footswitch to get my mate's Musicman amp working properly again, it was very noisy and the Phasor circuit worked intermittently before I did the work on it......

So, am i looking at maybe the 'dr boogie' or the ampeg flipster schematic for the preamp section?