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Old 18th October 2007, 05:07 PM   #1
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Default Output transformers ? sound quality ?

I'm on the hunt for good quality p-p makes. Price obviously reflected, but welcome input opinions.
Sowter types are common....who's using'em and..what about other vendors good & bad ??

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Old 18th October 2007, 05:15 PM   #2
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I've been using mainly Lundahl stuff for a few years. It's excellent at reasonable prices.
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Old 18th October 2007, 06:03 PM   #3
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A lot of people like the Dyna Clones Triode Electronics offers for budget iron. Especialy the Z565 model. It may not be so economic on that side of the pond though.
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Old 18th October 2007, 06:45 PM   #4
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Quote:
Originally posted by Tweeker
A lot of people like the Dyna Clones It may not be so economic on that side of the pond though.

I missed the Dyna on the triode site...The 451 suits my application nicely. For sure, the postage will cost more than the transformer. Since it isn't my money = tough.

Taa.

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Old 18th October 2007, 06:59 PM   #5
Tweeker is offline Tweeker  United States
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I'm afraid I dont see a 451 clone on offer by Triode Electronics. Closest I see to it is 431.
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Old 18th October 2007, 07:21 PM   #6
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Quote:
Originally posted by Tweeker
Closest I see to it is 431.

I was hasty with my enthusiam...youre' quite right. thanks

richj
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Old 18th October 2007, 07:40 PM   #7
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Transformer design still seems to be a bit of an art. Some Sowters are excellent, some less so. People generally consider Hammond to be, how shall we say, economy? Yet I thought the measured performance of one of their 1608 transformers was excellent.
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Old 18th October 2007, 07:59 PM   #8
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Check out the Silk Transformers at www.sacthailand.com. The are very good sounding well made at reasonable cost.
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Old 18th October 2007, 08:16 PM   #9
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Quote:
Originally posted by EC8010
Transformer design still seems to be a bit of an art. Some Sowters are excellent, some less so. People generally consider Hammond to be, how shall we say, economy? Yet I thought the measured performance of one of their 1608 transformers was excellent.
I've got a Hammond 1620. While perfectly serviceable, I've recently discovered it does not seem to compare to a Dynaco Z565. I'm still in the testing stage, hopeful that perhaps I have a correctable flaw in the design or a faulty tube.

On the positive side, the Hammond cost me less than half the price of a Z565. For the most part, the Hammond sounds just fine.
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Old 18th October 2007, 08:18 PM   #10
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Plitron offers fancy high end toroidal PP iron to 400 watts. PAT-4146-00 may be close to what your looking for. Not cheap.

PAT 4146-00 Application: EL34 150 W
This 150 Watt high power Push Pull output transformer,with a primary impedance of 2.2 kOhms and a secondary impedance of 8 Ohms with center tap (cathode feedback) and with 43 % Utra Linear taps, is intended for six EL34 or KT66 or 6L6 tubes at moderately high voltages (between 350 and 450 Volts). The -3dB (1 watt) bandwidth is from 0.6Hz to 118 kHz while the -3dB power bandwidth starts at 15 Hz, allowing this transformer to be used in applications where full and strong bass response is essential.

http://www.plitron.com/shopping/specs/414600.pdf

PAT 4147 might work if you dont need UL, is much cheaper.
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