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Post subject: 1972 Vibrolux Reverb dating code
Posted: Mon Feb 17, 2014 1:41 am
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Rock Star
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While playing the Bassman against various amps, I notice this odd thing about my VLR.

I remember someone posting about a certain code stamp that got stuck on one number. And that Fender then added another number, so that they could use these chassis.

Is this serial number? Anyone have a site that has this info?

Thanks! :D



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Post subject: Re: 1972 Vibrolux Reverb dating code
Posted: Mon Feb 17, 2014 5:10 am
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Aspiring Musician
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Beemer,

Is this what you are looking for?

http://www.ggjaguar.com/fendamp6.htm

vinyl


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Post subject: Re: 1972 Vibrolux Reverb dating code
Posted: Mon Feb 17, 2014 1:09 pm
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vinyl,

Yes. Thanks! It looks like the embossing stamp may have also gotten "stuck" on A-23845, for the VLR. The embossing tool seemed to have jammed on several SF model amps, in the early 1970's.

BTW: The amp is an early 1971 model. Not 1972. As seen in the stamps on the irons and original caps.

:D


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Post subject: Re: 1972 Vibrolux Reverb dating code
Posted: Mon Feb 17, 2014 5:00 pm
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Aspiring Musician
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This may be the post you saw:

http://forums.fender.com/viewtopic.php?f=12&t=74099

It has a picture of the sticker.

I'd say most anything is possible, barring evidence to the contrary. I believe the 100uFd cathode bypass caps and the 10uFd bias supply cap in my 61 Princeton were original, but have no way to prove it. Doesn't matter much anyway, because I replaced them. I'm going to try putting a 100uFd cathode bypass cap back in the tremolo oscillator, because with a 22uFd in there I have to turn the speed control up to about 3 before it will run when the intensity control is turned up. That's one thing nice about that amp, no footswitch necessary to make the tremolo work. Guess that's also why original brown footswitches are hard to come by.

vinyl

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Post subject: Re: 1972 Vibrolux Reverb dating code
Posted: Mon Feb 17, 2014 6:26 pm
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vinyl wrote:
That's one thing nice about that amp, no footswitch necessary to make the tremolo work.


All Princeton's (6G2 and later), Princeton Reverb's, Vibro Champ's, and Bronco's have tremolo circuits designed to be permanently on. They require the footswitch only to turn them off. Many original owners never bothered to purchase the footswitch since these amps were deemed to be "student" models unworthy of such luxury. But Leo included footswitch jacks nonetheless (a testament to his wisdom).

Arjay

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Post subject: Re: 1972 Vibrolux Reverb dating code
Posted: Mon Feb 17, 2014 11:42 pm
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Rock Star
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vinyl wrote:
This may be the post you saw:

http://forums.fender.com/viewtopic.php?f=12&t=74099

It has a picture of the sticker.

I'd say most anything is possible, barring evidence to the contrary. I believe the 100uFd cathode bypass caps and the 10uFd bias supply cap in my 61 Princeton were original, but have no way to prove it. Doesn't matter much anyway, because I replaced them. I'm going to try putting a 100uFd cathode bypass cap back in the tremolo oscillator, because with a 22uFd in there I have to turn the speed control up to about 3 before it will run when the intensity control is turned up. That's one thing nice about that amp, no footswitch necessary to make the tremolo work. Guess that's also why original brown footswitches are hard to come by.

vinyl



Thanks! That answered my question.

Have a good day. :mrgreen: :D :mrgreen:


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