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Discussion Starter · #1 · (Edited)
Im putting this under guitars and amps because its a set.
Traynor YBA 1 Bass Master Amp-Derick Bell 1X12 Cab-Vintage Celestion Creamback-70's Ventura Strat
60's YBA-1 this could be the transitional period. The tube rectifier slot has a plate over it. Not sure if this was covered or stock.
Big transformers.
This one has been modded before me.
The channels are automatically ganged so only input 1 works and you blend the 2 volumes.
Front has been modified, no logo, no back.
Great sounding head.

Vintage Creamback Celestion Speaker.

Derrick Bell 1X12 Cab made is slightly deeper for more bottom
12X18X17
Excellent Cab

70's Venture Strat.
Seems to be original.
Pickups sound really good.

Selling as a set.

Full disclosure:
Traynor head light at the front is loose.
Possibly 1 scratchy pot
Creamback is old and beatup but works and sounds perfect
The Venture is an old guitar
lots of dings
has no bar and needs a setup


$1200 Local Sale
 

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Discussion Starter · #2 ·
Changed to FS/FT. Possible trades for Boss Waza Expander, Uad Ox Box, or Fryette PS-2.
Or try me for other stuff, you never know.
 

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This is an early mid 60s Bass Master! The tube chart indicates that it originally had a rectifier tube.

It would be cool to see a photo of the inside circuit. :cool:
 

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Discussion Starter · #6 ·
This is an early mid 60s Bass Master! The tube chart indicates that it originally had a rectifier tube.

It would be cool to see a photo of the inside circuit. :cool:
Thanks Fern, not sure how I overlooked that. I think Im going to take this apart.
 

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Discussion Starter · #7 · (Edited)
Thanks Fern, not sure how I overlooked that. I think Im going to take this apart.
Ok Fern here are some pics. I can see that a bias pot was added. Also the tube chart does say 5AR4.
Did someone cover this up and take the rectifier out?
Is it a transitional model? Did the lablels maybe stay the same...I doubt it.
If this is like my other script logos I'm taking it off the block and restoring it.
 

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Lots of work was done on this amp !

Its now a single channel amp. All the orange drops are new. This would have been a 1965-66 model. The serial number might be stamped ontop of the power transformer. The can caps have date codes on them to help dating.
 

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Ok Fern here are some pics. I can see that a bias pot was added. Also the tube chart does say 5AR4.
Did someone cover this up and take the rectifier out?
Is it a transitional model? Did the lablels maybe stay the same...I doubt it.
If this is like my other script logos I'm taking it off the block and restoring it.

pics

It has the heavier phenolic(?) tag board with turret posts so that makes it pretty early, probably script logo. And Traynor apparently replaced the 5ar4 with diodes when serviced back then. Accounts are these were often rentals and serviced frequently so not unusual to have had the 5ar4 replaced with diodes.
 

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Discussion Starter · #10 ·
Lots of work was done on this amp !

Its now a single channel amp. All the orange drops are new. This would have been a 1965-66 model. The serial number might be stamped ontop of the power transformer. The can caps have date codes on them to help dating.
Yes it works as a 1 channel amp. Ch 1 and Ch2 are automatically ganged. Would this be a script logo amp then and did it have the tube rectifier and it's been removed.
Here's what's on the Transformers:
BT-1
BGC-2
BT-2

On the caps

YS45-40
DEB5
85%C
 

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Discussion Starter · #11 ·
It has the heavier phenolic(?) tag board with turret posts so that makes it pretty early, probably script logo. And Traynor apparently replaced the 5ar4 with diodes when serviced back then. Accounts are these were often rentals and serviced frequently so not unusual to have had the 5ar4 replaced with diodes.
Thanks Tomee
 

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Yes, this is an early script logo yba-1.

As others have said, its an early one with the tag board and Mallory caps.(like mine)

The pots will have date codes on them too. They'll be on the side of the pots.
 
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Pics of a similar amp..

As fernieite says above, the 4 stack of caps on the top is another clue about it being early.
I also notice these don't have the mustard caps, not sure if that's typical but so far the pictures I've seen they don't.
Keeping it now? :)
 

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Discussion Starter · #14 ·
Pics of a similar amp..

As fernieite says above, the 4 stack of caps on the top is another clue about it being early.
I also notice these don't have the mustard caps, not sure if that's typical but so far the pictures I've seen they don't.
Keeping it now? :)
Yes :)
 

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Did you see my NAD thread from a couple of weeks ago? There's some good information and photos to compare...
 

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Discussion Starter · #16 ·
Yes, this is an early script logo yba-1.

As others have said, its an early one with the tag board and Mallory caps.(like mine)

The pots will have date codes on them too. They'll be on the side of the pots.
I have to take a better lookso far I can see 6512
 

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Discussion Starter · #17 · (Edited)
Pics of a similar amp..

As fernieite says above, the 4 stack of caps on the top is another clue about it being early.
I also notice these don't have the mustard caps, not sure if that's typical but so far the pictures I've seen they don't.
Keeping it now? :)
 

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Discussion Starter · #19 ·
Yes, this is an early script logo yba-1.

As others have said, its an early one with the tag board and Mallory caps.(like mine)

The pots will have date codes on them too. They'll be on the side of the pots.
I have to thank you!!!!!
So was the rectifier circuit removed and how hard would it be to restore?
 

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That's all you need. The 12th week of 1965.
Same as mine. :)

Yes, yours had the tube rectifier and was upgraded. ( again, like mine) Not sure how hard it is to restore, or how much different the change would make.
 
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