Anteks are cheaper and have a little more core material at a given VA. They
seem to work just fine. The high-end Plitrons are very nice, and that's what we
have been using at PL for the past few years.
😎
seem to work just fine. The high-end Plitrons are very nice, and that's what we
have been using at PL for the past few years.
😎
You're close to both Plitron and Sumr. If I were you, I'd be dealing with one of them. Richard Sumner seems nice to deal with.
one need to take some time to read the PDF's on Antek's transformers. first of. the raited sec voltage is with 120/240V mains. (115/230 on most other) and at half load (fully loaded on most other).
so. for most of the world, that acctualy got 230V mains, your rail voltage will be 10% lower fully loaded with Antek transformers at same sec raiting.
so. for most of the world, that acctualy got 230V mains, your rail voltage will be 10% lower fully loaded with Antek transformers at same sec raiting.
I just finished my F4 and with 240W of standing bias on my 400VA Antek my secondaries are still 18.2VAC.
And my Antek does have an electrostatic shield between Primary & Secondary.
And my Antek does have an electrostatic shield between Primary & Secondary.
I noticed that. Won't hurt to order them with slightly higher voltage than needed.
I think we have 120v here. But I still would order them slightly higher. Even if the rail voltages come out a couple volts higher than intended it won't hurt anything. In a 25 watt amp, every watt counts.
No, by "high-end" I mean the ones that cost a lot of money, mostly because
they are designed to be quieter under dirty AC conditions. We use some
encapsulated ones, and some which are not.
😎
Thanks. There is quite a price premium for Plitron "low noise" compared to "Standard".
Does anyone have experience with AnTek vs. Hammond?
Does anyone have experience with AnTek vs. Hammond?
No experience from Antek still, but Hammonds sound nice. They seem to produce some mechanical vibe though.
Sorry to drag up a old thread... but did the Antek ever get compared against the Plitron? Very curious if they are worth twice the price.
I used one of his ( Sumr) 24 + 24 @ 1000 VA in my BA3 power amp, and it is quiet as the grave, even with 98-100+ dB speakers. That said, my F5 with dual Antek 300VA is also. Dead quiet. F6 and M2, with ear crammed into speaker cone, is just perceptible. Both of them use Antek's 18 + 18 500VA units.
Russellc
Hmm My f6 with Antek is Dead! quiet with ear pressed close to my Tannoys' dust cap.
Irrespective of Volume pot position.
Again: I have to check to see IF I've powered up the F6.
Yup 'that' dead quiet.
I'm liking it 😀
Irrespective of Volume pot position.
Again: I have to check to see IF I've powered up the F6.
Yup 'that' dead quiet.
I'm liking it 😀
It is just perceptible. I could probably turn the tranny and fix it, but for all intent and purpose, at even 1 foot dead silent. It has to be a quiet room, with my ear clear in the cone. Very little listening done this way. I still have to do the resistor-zener change, will mess with it then. With any thing less that 91 dB, silent. It takes Altec A7 to really even tell, with head up to the cone.
Russellc
I've found that the shielded Antek are quieter than the non, mainly due to decreased mechanical noise.
I suspect they are wrapped better.
Were I to try something different, the Torody from Poland are by all accounts excellent and look absolutely beautiful. Are they worth 4x the price? No idea. I'll still get one some day.
I suspect they are wrapped better.
Were I to try something different, the Torody from Poland are by all accounts excellent and look absolutely beautiful. Are they worth 4x the price? No idea. I'll still get one some day.
Which series are you referring to?
There isn't much price difference between the standard and audio range toroidy trafos. The supremes are indeed much more expensive due to the metal encapsulation and hopefully better internal construction.
I would think these would be best if you need to mount them near sensitive circuits. For power amps where signal is already robust the audio range are already a very good option! I have one in my F4turbo and no noise whatsoever at 6A bias current.
Just received 2 18V and 2 22V donuts from Toroidy. Both 200VA Audio range. They are well made and the shipping via TNT was decent, considering they had to travel half the globe.
I think I have found my donut supplier.
My only critique would be that they should use differently coloured wires for the outputs so that you know the direction of the secondaries. Blue-Grey and Red-Yellow seems to be a well used scheme by most other manufacturers for the secondaries.
I think I have found my donut supplier.
My only critique would be that they should use differently coloured wires for the outputs so that you know the direction of the secondaries. Blue-Grey and Red-Yellow seems to be a well used scheme by most other manufacturers for the secondaries.
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