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Re: [Amps] Testing Tubes with a Henry 2K

To: "" <>, Brett Sims <>
Subject: Re: [Amps] Testing Tubes with a Henry 2K
From: Donald Fox via Amps <>
Reply-to: Donald Fox <>
Date: Mon, 23 Aug 2021 02:48:27 +0000 (UTC)
List-post: <>
In that case, I think you will be fine. The tuning will be a bit off of course, 
due to the missing tube. I have done the same thing here with my Commander 2500 
when evaluating a number of 3CX800's one at a time. I did seal off the missing 
tube's socket, to be sure the remaining tube had plenty of air.


On Sunday, August 22, 2021, 10:02:29 PM EDT, Brett Sims <> 

Appreciate the responses.  My Henry 2K also has the filaments in parallel.  
Your right, it was originally designed for 3-400's.  I failed to mention in my 
original post, it was upgraded to 3-500's with appropriate chimneys and caps.   
 It works great.

So if you have a Henry 2k with filaments in parallel and currently runs two 
3-500Z's with appropriate chimneys, could one test a single tube?  Wadda ya 

Thanks  Brett  N5SQK

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