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Hoffman Amps Forum image Author Topic: Princeton Reverb build Transformer location  (Read 1592 times)

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Offline J3ona1

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Princeton Reverb build Transformer location
« on: July 20, 2024, 03:35:12 pm »
Hi Folks

A couple of questions about transformer location. Will it make for a noisy build if I place my output transformer as pictured? The PT has no 5 volt winding so ill be using the last tube socket to mount diodes for solid state rectification. Also there is about a 1/2 inch gap between the 6v6 and the power transformer. Will the 6v6 get hot enough to mess with the insulation on the transformer at that distance? I have about 3/4 of an inch of space between the pt and the control side of the chassis.

Offline tubenit

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Re: Princeton Reverb build Transformer location
« Reply #1 on: July 20, 2024, 03:53:12 pm »
This may be of some use to you regarding the tubes and the PT spacing. Having said that, I am not familiar with that type of PT?


Tube spacing in chassis (el34world.com)


With respect, Tubenit

Offline J3ona1

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Re: Princeton Reverb build Transformer location
« Reply #2 on: July 20, 2024, 04:07:41 pm »
Thanks tubenit! The pt is an 100VA antek transformer. Specs are below https://www.antekinc.com/content/AS-1T300b.pdf

Offline tdvt

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Re: Princeton Reverb build Transformer location
« Reply #3 on: July 20, 2024, 05:07:42 pm »
That looks really cramped to me & I would not be comfortable having the PT that close to a power tube


I have mounted an Antek of the inside of the chassis on a couple projects, the one pictured below is a 6G15 reverb built in a Princeton chassis. They are just shallow enough to fit, no noise issues having it on the inside. Is yours actually a PR chassis, looks narrow..?

If it was my project, I would probably mount the PT inside & ditch the rectifier tube socket for whatever extra room that might contribute. Just as easy to make a little rectifier board as to use the socket, in my mind.


Offline J3ona1

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Re: Princeton Reverb build Transformer location
« Reply #4 on: July 20, 2024, 05:33:36 pm »
This is what I deserve for using an oversized pt that can handle the current draw from 6l6's. I'll ditch the socket and move the pt as far away as I can. Thanks tdvt!

 


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