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Post subject: Super Bassman ; Original ?
Posted: Tue Dec 16, 2014 3:07 pm
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See for sale in Montréal, Canada , look four transformers , filter caps every where
The seller said is it original . :lol:

No I don't want to buy it , just show to you

Funny mods ?

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Post subject: Re: Super Bassman ; Original ?
Posted: Tue Dec 16, 2014 3:08 pm
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Post subject: Re: Super Bassman ; Original ?
Posted: Tue Dec 16, 2014 5:28 pm
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Certainly not original! Is it one transformer for each tube? Holy Schmokes those better be some tuff tubes with all that iron!

:shock:

T2

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Post subject: Re: Super Bassman ; Original ?
Posted: Tue Dec 16, 2014 6:42 pm
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No way that is original! It's missing the flux capacitor. :lol:
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Post subject: Re: Super Bassman ; Original ?
Posted: Wed Dec 17, 2014 7:24 am
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T2Stratman wrote:
Certainly not original! Is it one transformer for each tube? Holy Schmokes those better be some tuff tubes with all that iron!

:shock:

T2


Those are power trannies. You can see the OPT in its original position, on the chassis. Why you would need 4 PT's is beyond me.


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Post subject: Re: Super Bassman ; Original ?
Posted: Wed Dec 17, 2014 7:34 am
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BMW2002Tii wrote:
T2Stratman wrote:
Certainly not original! Is it one transformer for each tube? Holy Schmokes those better be some tuff tubes with all that iron!

:shock:

T2


Those are power trannies. You can see the OPT in its original position, on the chassis. Why you would need 4 PT's is beyond me.


+1

I 'd like to see the wiring of this amp/ powers tranys .
It is a guy selling that in my country , he do not know anything about Fender amps . Long time ago he bought it as original , he said .....

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Post subject: Re: Super Bassman ; Original ?
Posted: Wed Dec 17, 2014 6:01 pm
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Post subject: Re: Super Bassman ; Original ?
Posted: Wed Dec 24, 2014 12:49 am
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I don't believe that's original.

The (single) PT would be mounted to the chassis on the left behind the output tubes. That, and the caps in the bottom of the cab, tells me that someone "repaired" a blown power supply, using available parts. Maybe the original PT wasn't available?

In fact, there seems to be a lot of wires missing, heater supply, bias supply......very odd. I wonder if it even works. :?:

I suppose that the bias supply and heater supply could be tapped from the B+, making the heater supply DC, which would be cool, and that might be why the need for four PTs and the extra caps. :idea:

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Post subject: Re: Super Bassman ; Original ?
Posted: Wed Dec 24, 2014 2:53 am
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shimmilou wrote:
I don't believe that's original.

The (single) PT would be mounted to the chassis on the left behind the output tubes. That, and the caps in the bottom of the cab, tells me that someone "repaired" a blown power supply, using available parts. Maybe the original PT wasn't available?
You may be right it is PT's not OT's



In fact, there seems to be a lot of wires missing, heater supply, bias supply......very odd. I wonder if it even works. :?:
Yes it work , the seller use it and he never know it is not original , he bought it long ( ? ) time ago


I suppose that the bias supply and heater supply could be tapped from the B+, making the heater supply DC, which would be cool, and that might be why the need for four PTs and the extra caps. :idea:


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Post subject: Re: Super Bassman ; Original ?
Posted: Wed Dec 24, 2014 7:08 am
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" I suppose that the bias supply and heater supply could be tapped from the B+, making the heater supply DC, which would be cool, and that might be why the need for four PTs and the extra caps. " :idea:

Prolly not this. You only need one (120VAC primary: 6.3VAC secondary) PT for the heaters. Those trannies all look to be the same model. The bias supply needs a 60VAC secondary.

My guess is he had those wired for various outlet voltages throughout the world. Must have had a bunch of extra PT's and couldn't afford one with multi-primary taps. Just a WAG.

In any event, should never have that many trannies lined up in that fashion. EM coupling would be a problem, if all four PT's were activated.


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Post subject: Re: Super Bassman ; Original ?
Posted: Wed Dec 24, 2014 8:51 am
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You don't need an AC supply for the bias if you simply tap off of the existing DC B+ for bias and heaters, but you would need more current, and paralleling transformers would allow more current than a single transformer.

I can't see any wires for heater or bias supply from any of the PTs. It looks like two red wires (or red and brown?) and a blue wire going between the chassis and transformers, are these for incoming voltage? (red, brown and blue wires are normally the colors for OT primary, so that doesn't make sense either). The other wires visible seem to be coming from the DC mess of caps and ? else in the bottom right, so where is the heater and bias supply other than using that DC? Obviously the incoming voltage from the electrical plug needs to connect to the PT(s), and that is the only wiring that looks to be in place.

Your guess is as good as mine. :lol:

We will probably never know for sure WTF is going on here, but definitely strange and not original. :|

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