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Old 30th May 2013, 02:12 PM   #1
M Gregg is offline M Gregg  United Kingdom
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Default What do you think..OP Tx

I was looking at these OP Tx's..

OK they are a guitar OP Tx with paper insulation..

I was wondering how they would fair in a Mullard 3 watt SE stereo build..using EL84.

Fender Output Transformer, Champ, Tweed Princeton, Harvard, Bronco & Vibro-Champ, 125A35A & 022905, Single Ended Type, 4/8 Ohm


Any Thoughts..

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M. Gregg
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Old 30th May 2013, 02:56 PM   #2
DF96 is offline DF96  England
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OK if you want it to sound like a guitar amp.
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Old 30th May 2013, 05:25 PM   #3
Cookj is offline Cookj  Belgium
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Anything from the USA has become uneconomic due to postage and import duties.
It is better to source from EU countries ie Valves Stuff or RITTER electronic systems--Die Röhrenspezialisten seit 30 Jahren! - these are good BUT be aware that they will only accept payment via IBAN. A general problem in Germany.
A good site that accepts PayPal is Tube-Town - Hot Stuff cool sounds - excellent service

Cheers

John
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Old 30th May 2013, 09:06 PM   #4
M Gregg is offline M Gregg  United Kingdom
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I was looking for paper insulation..

So has anyone got any ideas for OP Tx that would "Sing" in a mullard 3 watt SE?

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M. Gregg
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Old 30th May 2013, 10:07 PM   #5
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Look at the physical size and then ask yourself, how much sound can go through a transformer that is not much bigger than a 12AX7.

I have an older set from the same manufacturer that doesn't have the 8K tap. They work for the intended application, a cranked guitar amp with a small speaker, not much else.

If you are going to get OPT's from the US, get the Edcor XSE15-8-5K, they will blow those little "Champs" away in a HiFi application. For 2 or 3 watts they are great. I use a set in a SE trioded 6V6GT. Juts about right. Saturation sets in when you plug in a KT88 and ask for 8 watts.
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Old 30th May 2013, 10:38 PM   #6
M Gregg is offline M Gregg  United Kingdom
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Looks like Edcor then..

Sigh...

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M. Gregg
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Old 31st May 2013, 07:11 PM   #7
M Gregg is offline M Gregg  United Kingdom
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Just a few questions..


Has anyone used VVT output transformers?

UK Non JavaScript Price List

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M. Gregg
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Old 1st June 2013, 04:28 PM   #8
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Talk with one of the members from your country, Andy Evans. He uses DHT output tubes, but has a lot of experience with different SE OPTs.
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Old 1st June 2013, 06:12 PM   #9
Cookj is offline Cookj  Belgium
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Valves Stuff

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John
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Old 1st June 2013, 08:05 PM   #10
M Gregg is offline M Gregg  United Kingdom
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Quote:
Originally Posted by Cookj View Post
Valves Stuff

Regards

John
Yes..I looked at the Danbury

Super Universal SE 5 – 10W Output Transformer >>having 5 section windings and a very good frequency response (their comment). It has a gapped core and grain oriented low-loss laminations.

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M. Gregg
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