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SE84UFO2 rectifier tubes - all 5Y3GT compatible? (Read 3707 times)

canonken

Seasoned Member

Posts: 151

SE84UFO2 rectifier tubes - all 5Y3GT compatible?
10/26/20 at 03:18:34

Hi,

I posted a question on another forum and got some snarky/nasty replies saying the 5Y3GT could not work where 5U4, 5AR4, etc. would work.

On the Decware website, I see these specific models listed as being compatible:
5U4G
5U4
5AR4
5Y3GT
274B (only some)

I have two NOS RCA 5Y3GT and some 5U4GB (one Westinghouse, one GE) tubes - all tested as good. Should I be able to use these?

Thanks!

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Lon Seasoned Member "Love without guts is worthless!" Philip K. Dick Posts: 23464	Re: SE84UFO2 rectifier tubes - all 5Y3GT compatible? Reply #1 - 10/26/20 at 06:33:18 Yes, they should work just fine.
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GroovySauce Seasoned Member Posts: 815	Re: SE84UFO2 rectifier tubes - all 5Y3GT compatible? Reply #2 - 10/26/20 at 13:56:00 For the 274b the tube must be designed for a 47uf cap.
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Rivieraranch Seasoned Member Posts: 2126	Re: SE84UFO2 rectifier tubes - all 5Y3GT compatible? Reply #3 - 10/26/20 at 18:29:22 There are the Shuguang marked 274B that are electrically 5U4. They have enough oofs to withstand startup n the Zen.
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Lon Seasoned Member "Love without guts is worthless!" Philip K. Dick Posts: 23464	Re: SE84UFO2 rectifier tubes - all 5Y3GT compatible? Reply #4 - 10/26/20 at 19:56:05 Yes, and the Sophia Electric Aqua as well.
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canonken

Seasoned Member

Posts: 151

Re: SE84UFO2 rectifier tubes - all 5Y3GT compatible?
Reply #5 - 10/26/20 at 23:46:55

Thanks all, appreciate it! Well good news is I now have 4 'known good' rectifier tubes, as well as two likely NOS (from a trusted friend, but he does not have test gear) GE and RCA on top of that.

Also have tested NOS GE 6DJ8 and 6N1P-EV 'Voshkod Rocket' - as well as a set of new JJ EL84 (that were never used).

If you know any of these are NOT OK, don't be shy about telling me. Maybe they suck and don't sound good, but if they work and won't hurt the amp, nice to have some stuff on hand.

Thanks again!

Ken

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Lon Seasoned Member "Love without guts is worthless!" Philip K. Dick Posts: 23464	Re: SE84UFO2 rectifier tubes - all 5Y3GT compatible? Reply #6 - 10/27/20 at 00:16:58 Those tubes will work in the amp and will be fun to experiment with.
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canonken Seasoned Member Posts: 151	Re: SE84UFO2 rectifier tubes - all 5Y3GT compatible? Reply #7 - 10/28/20 at 23:25:14 Appreciate it, thanks all
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