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Woo Audio WA6 + WA6SE: Tubes, Comments, Pictures, and Advice - Page 76

post #1126 of 1600
Can anyone recommend a good place to buy 6fd7s? Also do I need to buy matched tubes?
Edited by bassboysam - 1/31/14 at 3:35pm
post #1127 of 1600

My tube pusher is http://www.mcshanedesign.net/tubes.htm

 

Email only, very reliable/honorable.  If you don't see the tube(s) you want, email him.

post #1128 of 1600
http://www.vacuumtubesinc.com

Ask for Jim (last name cross). Tell him Spencer sent you. :-D
post #1129 of 1600
Quote:
Originally Posted by omoanya View Post
 

i have Sophia with 6EW's   will try the FDs.   What about the Mullard GZ37 for the rectifier ?  I see them NOS for $99 at  the tubestore 

 

 

the Gz37 is a good tube, however, i personally only like the older Cossor Fat bottle GZ37.

 

the newer cheaper Mullard GZ37 (skinny bottle), is not as good, its still a decent tube, but can be a little too lush and slow. i tried it on WA6-SE and it was ok but i kinda preferred sophia.

 

the cossor gz37 builds upon that sound, adding speed, bass extension and body, and more coherency.

post #1130 of 1600
Quote:
Originally Posted by bbophead View Post

My tube pusher is http://www.mcshanedesign.net/tubes.htm

Email only, very reliable/honorable.  If you don't see the tube(s) you want, email him.

Quote:
Originally Posted by GloryUprising View Post

http://www.vacuumtubesinc.com

Ask for Jim (last name cross). Tell him Spencer sent you. :-D

Thanks for the links. But do the power/driver tubes need to be matched? I would imagine they'd need to be but I just want to make sure.
post #1131 of 1600
Jim will match them for you if you need. He will also match other tubes too.
post #1132 of 1600
Quote:
Originally Posted by bassboysam View Post
 
Quote:
Originally Posted by bbophead View Post

My tube pusher is http://www.mcshanedesign.net/tubes.htm

Email only, very reliable/honorable.  If you don't see the tube(s) you want, email him.
 
Quote:
Originally Posted by GloryUprising View Post

http://www.vacuumtubesinc.com

Ask for Jim (last name cross). Tell him Spencer sent you. :-D

Thanks for the links. But do the power/driver tubes need to be matched? I would imagine they'd need to be but I just want to make sure.

Since there is one tube per channel, I think you would want the tubes matched.  Besides, it's not like it's expensive.  Tell the seller what piece you are using them in.

post #1133 of 1600
Thanks. I know it's not expensive but the only place in canada that I found 6FD7s did not offer matching on that tube type I just wanted to confirm that I should look elsewhere.
post #1134 of 1600

http://vacuumtubes.net/index.html. He has the tubes for the WA6 SE and ask for Dale. You can get 6DE7 and 6FD7 for like 4.00 each he has all the equivalents last time I checked. He may have matched pairs too but might charge you10.00 each for those


Edited by Frank I - 2/1/14 at 8:46am
post #1135 of 1600
Thanks guys!

One more question. In general what are the sonic differences between the 5AR4, 5R4 and 5U4G?
post #1136 of 1600
Quote:
Originally Posted by bassboysam View Post

Thanks guys!

One more question. In general what are the sonic differences between the 5AR4, 5R4 and 5U4G?

These are all worth trying in this amp.You get more voltage sag with the 5UG and they are generally cheaper to try. Rolling these is half the fun of owning this amp. Once you've got the right match between your headphones and driver tubes the the recipe is complete when you've seasoned it with just the right rectifier. BTW if you try 5AR4/GZ34, don't bother with anything but Mullard(I use a black base one liberated from a hammond organ). I found I preferred the RCA 5R4GY and Philips 5R4GYS over 5UG's on the cheap. However, My ears feel the sophia electric is worth the extra dough.
post #1137 of 1600
Thanks, so it sounds like the 5U would have the most"tubey" effect which is what I like. I'm not looking at spending a lot of money on a rectifier, $40-$70. Leaning towards the SED black plate or thetubestore's preferred series 274B.
post #1138 of 1600
Quote:
Originally Posted by bassboysam View Post

Thanks, so it sounds like the 5U would have the most"tubey" effect which is what I like. I'm not looking at spending a lot of money on a rectifier, $40-$70. Leaning towards the SED black plate or thetubestore's preferred series 274B.

Buy the RCA 5U4G on Ebay they are a value and a great tube . You can find thoses for  20-50 each  an they are excellent rectifiers . The 274B  in that price range in my opinion are not that good.

post #1139 of 1600
I agree with Frank on this. $25-30 will get you a very nice sounding RCA old stock rectifier, regardless of whether you go with 5R4/5UG. The only 5UG I didn't like was the tung sol. If you want to hear what new production rectifiers sound like-I can send you a sovtek 5AR4 to try that has been sitting in a box for over a year. I think I put 10-20 hours on it. You can send it back when your done or leave it on a shelf in its box like I have done.
post #1140 of 1600
Thanks for the offer but I have lots of current production rectifiers (JJ) tubes and the current rectifier in my WA6 is an SED according to Woo Audio.

I'll see what I can find on ebay.
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