Suitable Output Transformer

Double-Bubble! Place for discussing the 36W version...

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dynaman
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Suitable Output Transformer

Post by dynaman »

I've recently picked up a NOS Stabcor tranny that is rated for 35 watts. Primary impedence is 6600 ohms. I noticed in another thread that 4K is optimum for a 36 watter. I plan on using a quad of 6V6's. Will my Stancor tranny perform well in this situation? Thanks for any help.
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markh
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Post by markh »

A quad of 6V6s want a 4k to 5K secondary. 6k6 is a little high, but would work (with less then optimal max output power available).

--mark h
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Andrew4566
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Post by Andrew4566 »

Fender used 6600ohms primary:8ohms for many of their 2 6v6 tweed amps, so you could set it up as a 3300ohms primary: 4ohms for 4 tubes I am sure. just use you tranny and two 8ohm speakers parallel to give ya the 4 ohm load.

-Andy
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mikebuzz
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Post by mikebuzz »

I had modified my 18 watt TMB to 36 w ( 4 el34's , I never changed the output tranny !!!! :x )

Well I blew it up last night , I need a good output tranny for it

ANy suggestions ???


Later
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Andrew4566
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Post by Andrew4566 »

I would deffinately go bigger!

-Andy
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Andrew4566
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Post by Andrew4566 »

In all seriousness, if you were using a small 18w tranny it likely wasn't going to last, but it was probably compounded by an Impedence mismatch as well. running the 4 tubes cuts the "desired" impedence in half. So like markh said look for one at 4k(ish) primary rated for 20-25watts (hiFi) or 35-50watts (guitar).

-Andy
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mikebuzz
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Post by mikebuzz »

I found the part Hayboer HTS-7013-1 30 watt from Mojo

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Thanks
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