What rating is the transformer on the Fet 400r?

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Kw6

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What rating is the transformer on the Fet 400r?
« on: 16 Oct 2018, 04:26 am »
Is it 500 VA?

Kw6

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Re: What rating is the transformer on the Fet 400r?
« Reply #1 on: 16 Oct 2018, 04:37 am »
Also how many watts are biased into class A?

avahifi

Re: What rating is the transformer on the Fet 400r?
« Reply #2 on: 17 Oct 2018, 02:03 pm »
The power transformer in the Fet Valve 400R is nearly 600VA capability with three sets of outputs.

Primary: 2*117V 50/60Hz 590VA
Secondary: 119.2V 4.5A 15.1V 1.12A 230V 0.12A
Overall dimensions: Diam: 5.5”
(approx given) Height: 3.2”
Weight: 13 lbs

There are three sets of secondary windings.

High voltage high current for output section.

High voltage low current for tube high voltage section.

Low voltage high current for tube heaters.

The 400R runs class A up to about 20W/channel.

Rated power is 225 W/Channel into 8 ohms, more into 4 ohms.

Frank

Kw6

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Re: What rating is the transformer on the Fet 400r?
« Reply #3 on: 17 Oct 2018, 03:33 pm »
Thanks Frank! One more question about the Set 400! What is main differences  between  the new set and the older Synergy  400 series?

avahifi

Re: What rating is the transformer on the Fet 400r?
« Reply #4 on: 17 Oct 2018, 05:48 pm »
The SET 400 is a completely new audio design and is the best solid state amplifier we have ever done.

The S450 was a lovely amp with much more complex electrical design and was really smooth and engaging.  We actually have a used one and a demo available right now at reduced prices.

The SET 400 just has an amazing "wow" factor that does not quit no matter how long you listen.  Hard to explain but the newest review tells most of the story.

http://www.audiophilia.com/reviews/2018/9/13/the-van-alstine-vision-set-400-stereo-amplifier

and Larry's review right here in Audiocircle.

https://www.audiocircle.com/index.php?topic=158752.0

Frank

Kw6

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  • Posts: 87
Re: What rating is the transformer on the Fet 400r?
« Reply #5 on: 17 Oct 2018, 06:26 pm »
Nice read Frank! Thanks!