2. amps-preamps
  3. 124511-10254

How best to place tubes in an ARC VT-130SE

I have two matched quartets of 6550EH Platinums that I am going to put in my amp. One quartet's tubes measure lp: 39 and GM of 5,700, 45 ma. Every tube in the other quartet measures lp: 36, GM of 5,400, 44 ma. There are tube positions of V4-V7 on left and V14-V17 on the right. The quartets are perfectly matched. I want to achieve a "match" between the sides. Anyone with any experience as to where I should place these to have both sides "balanced" with each other? I understand it is identical to the VT-130 as well. Thanks.
128x128madgalatea
czarivey
5,721 posts
 
matched quads aren't important. each matched pair should be placed in each push-pull pair.

jea48
4,311 posts
 

matched quads aren't important. each matched pair should be placed in each push-pull pair.

Then please explain to the OP where you would install the new tubes, he has, for the best output balance across each channel.

Here is the schematic wiring diagram.
http://www.audioresearch.com/ContentsFiles/VT130SESchPL.pdf


Here is the owners manual.
http://www.audioresearch.com/ContentsFiles/VT130SE_Manual.pdf

Jim

madgalatea's avatar
madgalatea OP
26 posts
 
Then please explain to the OP where you would install the new tubes, he has, for the best output balance across each channel.
Thanks for the clarification. I have the schematic and Owners/Users Manual...they are apparently not dumbed-down enough for me to figure it out!
madgalatea's avatar
madgalatea OP
26 posts
 
matched quads aren't important. each matched pair should be placed in each push-pull pair.
Which pairs would then represent "each push-pull pair."
czarivey
5,721 posts
 
V4/V6 and V5/V7 according to schematic provided by jea48.
Same applies to another channel.


More to discover