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Saw an Ampeg B-12

Swamp_Ronin

Supporting Member
Jan 15, 2021
1,321
3,032
Portland, OR
Saw this at a junk store. Looks to be in great shape, and a decent price. Doesn't seem like cool stuff appears in the wild anymore. Not a fabled B-15 but still pretty cool.
 

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There are several good guitar amps
that use 6L6 tubes, including
several from Fender. These amps
typically have a better feature set for
guitar, including reverb, etc., and
weigh less.
My Carr Rambler uses 6L6 tubes,
has reverb and tremolo, is
light weight, and is a fantastic
guitar amp for slightly more money used.
 
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There are several good guitar amps
that use 6L6 tubes, including
several from Fender. These amps
typically have a better feature set for
guitar, including reverb, etc., and
weigh less.
My Carr Rambler uses 6L6 tubes,
has reverb and tremolo, is
light weight, and is a fantastic
guitar amp for slightly more money used.
The type of output tubes don't have much influence on tone independent of the other interrelated variables. Circuit design, transformers, speakers, etc.
 
The type of output tubes don't have much influence on tone independent of the other interrelated variables. Circuit design, transformers, speakers, etc.

A very nice amp. The PF20T is a modern alternative. The one in the store looks really nice.

There were three main revisions as I recall. The later ones used much more readily available tubes, 6L6GC power tubes. The first one used 7868 (7591A) power tube, available as reissues, NOS is expensive. For a while, these tubes were difficult to source.
 
I'm 99.5% sure my old roommate in Nashville had one of those. I remember him telling me it was not the storied B-15. He used it for upright bass and bass guitar too. Helped him load/unload that fool thing many, many times.
 
Buy it if you can (and it's in working enough order for the price). I've got one from the next era in cosmetics and it rules. Enough that I've DIY'd the preamp for DI use four or five times for myself and friends.
 
Comparing vintage gear to 21st century bass gear, is more of an exercise in nostalgia than analysis of sound quality, IMHO. And none of this hear is as lightweight or bulletproof as today's gear.
I'll have to disagree. The SB-12 is a very clear and clean amp in its linear range, and actually quite transparent.

Driven hard it distorts very pleasantly for guitar, and ata useable vol

I've had mine since 1995, replaced power tubes once and had one repair that cost $40 and was a single resistor taken out by a failing tube.

It's been my bass practice amp, special amp for live on air performances etc and guitar recording amp. It was my main guitar stage amp for a few years, toe to toe with a jcm900.

So bought for $250 and say $150 in maintenance

30 years at $15 a year….

And sounds sweet!
 

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