Output transformers for EL84,6V6 single end - diyAudio
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Old 7th April 2010, 05:15 PM   #1
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Default Output transformers for EL84,6V6 single end

For these hand made output transformers for EL84/6BQ5 and 6V6 single end amplifiers, We used them in our EF95-EL84 single end and EF95-6V6 single end amplifiers. We think that they performed very well and the price is affordable.

Power: 6W
Size of steel core: EI 66 x 33 mm
Primary impedance: 5K ohms
Secondary impedance: 0-4-8 ohms
Primary inductance: 11H
Primary current: 60 mA
Frequency Range: 30Hz-20KHz
N.W.: approx. 940 gm per piece, 1.88 kg per pair
Price: US$45/pair

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Can buy optional steel covers for the transformers. The size of cover is 80W x 90D x 80H mm and sell at US$5/pc.

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Last edited by Musik007; 16th April 2010 at 08:20 AM. Reason: add info
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Old 8th April 2010, 04:06 PM   #2
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The 5K output transformers were also used on EF95-6V6 single end amplifier.

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Old 8th April 2010, 04:08 PM   #3
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EF95-EL84 single end amplifier.

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Old 8th April 2010, 04:24 PM   #4
kevinkr is offline kevinkr  United States
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Hmm, these transformers look very tempting for a small 6BQ5 SE amp I want to do sometime later this year. Any idea what shipping costs to MA, USA might cost? Pair with covers.

Can you tell us a little more about the construction techniques used - they do look nice and appear to be interleaved?
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Old 9th April 2010, 05:58 AM   #5
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I don't have the details about the construction techniques of the output transformers as they may be secret, but according to the maker, the output transformers are winded by old techniques and paper shielding is used on each layer. The insulation material is yellow varnished silk tape.

Can you let me know the full name of MA?

Thanks.
Tony.
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Originally Posted by kevinkr View Post
Hmm, these transformers look very tempting for a small 6BQ5 SE amp I want to do sometime later this year. Any idea what shipping costs to MA, USA might cost? Pair with covers.

Can you tell us a little more about the construction techniques used - they do look nice and appear to be interleaved?
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Old 9th April 2010, 04:48 PM   #6
kevinkr is offline kevinkr  United States
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MA is the standard two letter abbreviation the USPS uses for Massachusetts. (Noted in the location information in my moniker.)

Also what is the dc current rating of the primary? (Or what current do you run them at?)

I'm definitely interested, depends a lot though on shipping costs.
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Last edited by kevinkr; 9th April 2010 at 04:52 PM.
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Old 9th April 2010, 05:04 PM   #7
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OK, will ask the shipping cost tomorrow.

The DC current rating of the primary is 70mA.

Thanks.
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Old 10th April 2010, 02:44 PM   #8
kevinkr is offline kevinkr  United States
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Hi Thomas,
Please also send me a PM through diyaudio with the information - that way I will be sure to see it.

Thanks, Kevin
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Old 10th April 2010, 02:53 PM   #9
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Hi Kevin,

OK. I will reply the shipping cost by PM on Monday.

Thanks.
Tony.

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Hi Thomas,
Please also send me a PM through diyaudio with the information - that way I will be sure to see it.

Thanks, Kevin
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Old 10th April 2010, 02:57 PM   #10
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We are able to custom-make and sell EI transformers including power transformer, input/output transformers and chokes for tube amplifiers.
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