[Bitten by Bug]

Thank you, I shall.  Right now I am like a little kid ripping open packages.  Today's tube is a little black metal cylinder. JAN 5Z4 - this one will take some burn in, but am quite enjoying and hope it will mature nicely! The hot sound that is currently being produced is outstanding on acoustic guitars.  Can see long term will be electing a genre and then pre-setting the tubes accordingly.  Ha Ha.
 
Cheers.

 

[abvolt]

I know that feeling ever so well it's a hard one to shake once you start..Enjoy

 

[Bitten by Bug]

Thank you.  Cheers!
      

 

[spyder1]

This list might be posted earlier in this thread, but http://tinyurl.com/4wbv5qn, is a "Tube Compatibility Chart," for all Woo Amplifiers. It helped me with re-tubing my WA6

 

[abvolt]

  This list might be posted earlier in this thread, but http://tinyurl.com/4wbv5qn, is a "Tube Compatibility Chart," for all Woo Amplifiers. It helped me with re-tubing my WA6

Cool thanks..

 

[h00hbt]

Hi
 
Did you measure the difference in B+ for the various tubes?

 

[abvolt]

? explain..

 

[Guidostrunk]

Hello folks,
I recently received my wa6, and it came with an extra rectifier. The label is rubbed off, so I did some research on the code.

SG1-B9A(square getter)

The only tube that popped up on Google, was a Mullard Blackburn GZ32,
(http://hifido.co.jp/KWQUAD/G2--/P/A1/J/0-60/S5/M1/C13-73472-82317-00/) with the same exact code. I don't want to assume that's what it is. So I'm hoping someone can verify by the pic. I'm pretty seasoned with 6922 variant tubes, but lost with this new journey. Lol. forgive me for the poor quality pic.

 

[gibosi]

I recently received my wa6, and it came with an extra rectifier. The label is rubbed off, so I did some research on the code.

SG1-B9A(square getter)
 

 
SG = 5V4G
 
The 5V4G is often considered a plug-in replacement for the GZ32, However, it can't provide quite as much current as the GZ32 and therefore, in some applications it is a bit too "wimpy". 
 
Edit: It is perfectly fine in a WA6, but in a Glenn OTL, it is borderline....
 
1 = Revision #1
 
B = Blackburn, Mullard
9 = 1959
A = January
 
http://tubedata.milbert.com/other/Philips/PhilipsCodeListAB-v10.pdf

 

[abvolt]

I think the 5v4g sounds nice for an inexpensive rectifier i have several different brands..Enjoy

 

[gibosi]

   
SG = 5V4G
 
The 5V4G is often considered a plug-in replacement for the GZ32, However, it can't provide quite as much current as the GZ32 and therefore, in some applications it is a bit too "wimpy". 
 
Edit: It is perfectly fine in a WA6, but in a Glenn OTL, it is borderline....
 
1 = Revision #1
 
B = Blackburn, Mullard
9 = 1959
A = January
 
http://tubedata.milbert.com/other/Philips/PhilipsCodeListAB-v10.pdf

 
Edit2: To be more clear, both the 5V4G and the GZ32 are fine in the WA6. However, in a Glenn OTL, a 5V4G can't provide enough current and will likely burn-out in short order, and even the GZ32 is borderline....

 

[punit]

I will acquire this 300B pre-amp shortly for use in my speaker system & need some advice with regards to the rectifiers that can be used on it. It is made for using with a 274B, so can I also safely use 5U4G, U52, GZ37, 5R4, CV593, USAF 596 ?
 
http://www.mei-xing.com/english/english/cp/3_300.html
 
The manufacturer has not yet responded to my mail. Will be grateful for any advice.

 

[gibosi]

  I will acquire this 300B pre-amp shortly for use in my speaker system & need some advice with regards to the rectifiers that can be used on it. It is made for using with a 274B, so can I also safely use 5U4G, U52, GZ37, 5R4, CV593, USAF 596 ?
 
http://www.mei-xing.com/english/english/cp/3_300.html
 
The manufacturer has not yet responded to my mail. Will be grateful for any advice.

 
It would be most useful to know how much current this amp needs to operate. The Western Electrica 274B puts out 225 ma. Based on this, I would think it is safe to assume that any 5U4-type rectifier with a similar capacity would be fine. For example, comparable European rectifiers, such as the GZ33, GZ34, GZ37 and U52 can provide 250 ma, and therefore, they should be fine.
 
That said, the Emission Labs 274B provides considerably less current, only about 150 ma. And if this is a suitable 274B , then the universe of possible rectifiers is even larger.
 
Good luck!

 

[punit]

 

Spoiler: Warning: Spoiler!

 
It would be most useful to know how much current this amp needs to operate. The Western Electrica 274B puts out 225 ma. Based on this, I would think it is safe to assume that any 5U4-type rectifier with a similar capacity would be fine. For example, comparable European rectifiers, such as the GZ33, GZ34, GZ37 and U52 can provide 250 ma, and therefore, they should be fine.
 
That said, the Emission Labs 274B provides considerably less current, only about 150 ma. And if this is a suitable 274B , then the universe of possible rectifiers is even larger.
 
Good luck!

 

Thank you for the feedback. The pre map comes  factory fitted with a Shuguang  274B . An internet search throws up the following info for the rectifier :
 
Rectifier: 274B Compatible with: 5Z3P and 5Z3PA
:
•Maximum reversed voltage higher than 850V 
• Output current can reach 150mA
• No ignition effect when using in high voltage application 
 
http://www.leisure-audio.com/Shuguang-274B(5U4G5Z3P)-vacuum-tubes-new-p42.html
 
So based on above data can it be concluded that it is safe to roll above mentioned rectifiers ?

 

[gibosi]

  Thank you for the feedback. The pre map comes  factory fitted with a Shuguang  274B . An internet search throws up the following info for the rectifier :
 
Rectifier: 274B Compatible with: 5Z3P and 5Z3PA
:
•Maximum reversed voltage higher than 850V 
• Output current can reach 150mA
• No ignition effect when using in high voltage application 
 
http://www.leisure-audio.com/Shuguang-274B(5U4G5Z3P)-vacuum-tubes-new-p42.html
 
So based on above data can it be concluded that it is safe to roll above mentioned rectifiers ?

 
In my experience (running a Glenn OTL), the maximum output current is the major limiting factor in selecting suitable rectifiers to roll. And therefore, if the Shuguang 274B is adequate to run your new amp, then any 5U4-type rectifier that can provide at least 150 ma should also be fine. As all the rectifiers you listed above can provide around 250 ma, they are all more than up to the job.
 
Cheers