The 800A runs 2200V key down. The original TNY uses the LK-550 xfmr @
around 2500V and later Dahl provided one with a Hi-Low tap. Ive had
several of all versions thru here for repairs, upgrades and 6M
conversions. I was also an authorized service shop while Amp Supply was
still in business. Denny Had also built small runs at Cary when he had
enough advance orders/cash. He may still sneak a few out.
All 800 xfmrs were made by Dahl that I know of.
Carl
KM1H
----- Original Message -----
From: "AB2E Darrell" <ab2e@hotmail.com>
To: <amps@contesting.com>
Sent: Wednesday, September 10, 2008 1:19 AM
Subject: [Amps] Amp Supply LK800 XFMR question
>
> Greetings Group,
> I recently acquired an LK800C with partial TNY upgrades, and a
> brand new set of 3CPX800A7s, the high-rated pulse tubes. The amp seems
> to work fine, but my question is this. The plate voltage shows 2000V
> when it's in standby or idle. My other LK800TNY (had all the mods
> including dual voltage) reads 2500v, or 3100v. Does anyone know if the
> stock xfmr was 2000v, or do I possibly have problem in the amp or xfmr
> causing lower voltage? Or maybe the true TNY model just came with a
> heftier xfmr?
> I havn't looked yet to see if there's any ratings visible on the xfmr,
> but plan on taking it apart this weekend.
> Any suggestions or info appreciated.
>
> 73 Darrell AB2E
>
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