Triode Electronics Output Transformer

[pulentboy]

Hi: i just found this site, they also have a store on ebay. The prices are really cheap for output transformers, for example, a 20 watts output transformer for $24, i know that they are not probably for "hi-fi" amps but for a first attempt to build a tube amp i guess they are ok.

Any experience with this transformers?

http://store.triodestore.com/transformers.html

They also say this:

"Response flat within 1 dB 50 Hz-20KHz at 20 watts, you can actually put more than 20W through it at a more limited bandwidth, eg: at lowest note on a lead guitar (approx 80 Hz), this transformer can pass 50 watts or more"

Its this true?

[pulentboy]

Anyone

[AL]

I have never used Triode before. But they've been around for a while. I do remember a few complaints several years back about them switching owner's or something and there were a few people upset about the way Triode was handling things.

But, that's it. That seems like a good price.

AL

[NickS]

"Response flat within 1 dB 50 Hz-20KHz at 20 watts, you can actually put more than 20W through it at a more limited bandwidth, eg: at lowest note on a lead guitar (approx 80 Hz), this transformer can pass 50 watts or more"

Its this true?

I expect you can get more power with more distortion

It seems counter-intuitive that lower frequency=more power; switch-mode power supplies exemplify exactly the opposite, since the more times per second you can switch the energy through the core the more power you can transfer. You have to balance that against heating losses.

With output transformers, though, it may well be the case that inductance limits how much you can get through the core in a given cycle at high frequency; low frequencies have more time to allow a larger current to build up and maybe even saturate the core.

I'm sure someone will be along with a better explanation soon...

[pulentboy]

Thanks for your responses.

AL: i guess the problems with triode electronics then got nothing to do with the quality of their products.

NickS: For what i understand the problem could be at higher frecuency because of the inductance, but i guess that for a 30 watts amp it would be ok, or it would have audible distortion at max volume?

[RnFR]

i go there frequently in person to pick up various parts, tubes, etc. all the guys are cool and they have decent prices. but honestly it looks like someone dropped a bomb on the place! i know they moved into a now defunct shop and are trying to sort through the mess, but man- you should see this shop!

all in all, i still give them a thumbs up-

although i have never used that particular transformer..