Home » Audio » Thermionic Emissions » Optimal settings for 6P3S-E output tubes in Leben CS-600(X)s (The CS-600 can be configured to use a variety of output tubes through two switches, among them are Russian 6P3S-E/6П3С-Е output tubes, which are compatible with 6L6/5881 tubes.)
Optimal settings for 6P3S-E output tubes in Leben CS-600(X)s [message #97043] Fri, 06 October 2023 07:38 Go to previous message
kasperbergholt is currently offline  kasperbergholt
Messages: 44
Registered: August 2021
Location: Copenhagen, Denmark
Baron
Hello forum,


I'm back again, still being on a journey to understand tubes & tube amplifiers Smile

Back in April I got valuable feedback on 6CS7 tubes for my Leben CS-600.

This time I've got a couple of questions regarding output tubes.

The CS-600 can be configured to use a variety of output tubes through two switches, among them are Russian 6P3S-E/6П3С-Е output tubes, which are compatible with 6L6/5881 tubes.

The two switches are:

1) 'Plate voltage,' which can be set to either 350V/DC or 410V/DC.
2) 'Cathode resistor' can be adjusted to 680 ohms or 460 ohms.


https://bergholt.net/wp-content/uploads/2023/10/leben-cs-600-output-tubes-switch-cropped.jpg

Both switches can be set either up or down. According an overview of settings for different types of output tubes - of which 6L6, KT77, &L&GB, 350B, KT66, KT88 and 6550A tubes can be used - switches can either both be up or left one up and right one in the down position for the 6P3S-E variant.

Overall, I'm interested in the best sound quality, but I'm also concerned about the longevity of the 6P3S-E/6П3С-Е tubes.

I'm thinking there might be a trade-off between the two?


Huge thanks in advance! Smile
 
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