View Single Post
  #6225  
Old 01-16-2021, 04:32 PM
AMammal AMammal is offline
Member
 
Join Date: Dec 2020
Posts: 35
Default

Quote:
Originally Posted by Formerly YB-2 View Post
You might check with Woo Audio (of tube headphone amp fame). They make all sorts of tube adapters and may have what you are looking for. I have several different pairs (though not the one you ask about) and they are, like their amps, high quality.
You might also ask Dennis Had.
Thanks for the tip! Nice stuff there, but I couldn't verify they had what I needed.

Quote:
Originally Posted by Analog Addict View Post
Personally, I'd consider just changing out the 4 pin socket for an octal socket and plugging in your 5AR4 directly. You may consider this too much of a leap for your skills, but in all honesty, it's pretty straightforward.

This tube search site will help you understand the wiring....

http://tdsl.duncanamps.com/tubesearch.php

OTOH, there's a vendor on Epay selling pairs of these for $10.

Search for "Vintage Bakelite 8pin to 4pin Tube Socket Converter Adapter 274B 5U4 to 274A 5Z3"
Man, that tube site will help me a ton now and in the future to understand the wiring of these things. Thanks so much!

Switching the sockets is probably a reasonable approach, but I think I would prefer the adapter route in order to switch the rectifiers that I currently have fairly easily so I can continue to use the RCA 80's that I have for the 6V6 tubes and the 5AR4 for the KT66's. Plus I kind of like the idea of keeping the LP-3a and 6V6'er the way they came from the workbench. Though I suppose there is an argument for just using 5Y3 types...

Before I had a chance to see your recommendation for the new bakelite adapters, I actually had some success sleuthing and sniped this from an Ebay listing for some random JFD tube adapters (J.F.D. Sockettes Radio Tube Adapters sheet to help someone who may be searching for this):

I know it's a big photo, but thought someone may find it useful to download an easy to read and high resolution version for future use/distribution. Moderators, If I need to shrink this I will be happy to do so.



So then i bought these:




Probably need cleaned, but hey! Vintage socket adapters! Is that cool? Maybe, maybe not, (depending if they work.) But, it was an "easy out" for me to verify the adapter had the right wiring... and they ship from Brooklyn instead of China which may or may not be a bonus given the products' respective age and operating condition.

Thanks again for everyone's help! This thread is amazing. One day I'll make it all the way through.

I'll let you know how this next step turns out when everything arrives!

Cheers!

Last edited by AMammal; 01-16-2021 at 04:36 PM.
Reply With Quote