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Re: [Amps] Amp Supply LK800 XFMR question

To: <>, <>
Subject: Re: [Amps] Amp Supply LK800 XFMR question
From: "Carl" <>
Date: Wed, 10 Sep 2008 09:09:02 -0400
List-post: <">>
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.


----- Original Message ----- 
From: "AB2E Darrell" <>
To: <>
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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