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Woo Audio Amp Owner Unite
Nov 9, 2011 at 6:38 PM Post #15,496 of 42,298


Quote:
clayton sf said:
I was wondering about that when I read this statement on that site:
 
ECC32=CV181 Mullard Specifications (not an exact 6SN7GT substitute)
(6.3V @ 950ma Filament, Maximum ratings: Vplate=300V, Iplate=50ma, Vfil-cathode=50V, Pwatts=5)
(Typical operation: Vplate=250V, Vgrid = -4.6V, Iplate=6ma, Gm=2300, Mu=32, Rplate=14Kohms, Rk=750 ohms)
 
To those who can decipher the above specs, it may explain why.
 
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I think dannie's experience was a fluke, hopefully.  The two important takeaway numbers here are the filament current draw @ 950ma which is 50% higher than a 6SN7, and the Mu factor of 32 vs. the 6SN7 @ 20.  The former is the reason so many warnings are attached to these tubes.  Transformers designed specifically for use with a 6SN7 might not cope with the higher current draw and could go up in smoke.  The second figure just means the tube has a higher gain factor, and given the same position on the volume knob the music will be playing louder with an ECC32 than it would be with a 6SN7.  I think higher gain at the drivers also carries the possibility of making any audible noise in the signal path louder too.  Some people wonder if the loudness is part of the reason why these tubes are perceived to be so good.
 
Nov 9, 2011 at 7:11 PM Post #15,497 of 42,298


Quote:
xcalibur255 said:
 
I think dannie's experience was a fluke, hopefully.  The two important takeaway numbers here are the filament current draw @ 950ma which is 50% higher than a 6SN7, and the Mu factor of 32 vs. the 6SN7 @ 20.  The former is the reason so many warnings are attached to these tubes.  Transformers designed specifically for use with a 6SN7 might not cope with the higher current draw and could go up in smoke.  The second figure just means the tube has a higher gain factor, and given the same position on the volume knob the music will be playing louder with an ECC32 than it would be with a 6SN7.  I think higher gain at the drivers also carries the possibility of making any audible noise in the signal path louder too.  Some people wonder if the loudness is part of the reason why these tubes are perceived to be so good.
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+2
 
Glenn was just sharing with me last week his preference for a lower 'Mu' tube, so turning up the volume control further would get more of the nasty volume pot out of the circuit. And we all know how much Silent One loves his silence!  
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Nov 9, 2011 at 7:34 PM Post #15,498 of 42,298
[size=medium]I also love silent with great dynamic range I generally prefer a higher input level to the amp that goes to a lower gain driver tube rather than a lower input level to a higher gain tube. The helps to maintain S/N ratio. I have DAC,s like the RDL HR-DAC1  that have adjustable pro level outputs working in the analog domain going into the amp. This arrangement works well with me and the dynamic range not loundness of the music is terrific with this setup.[/size]
 
Nov 9, 2011 at 7:51 PM Post #15,499 of 42,298


Quote:
john57 said:
[size=medium]I also love silent with great dynamic range I generally prefer a higher input level to the amp that goes to a lower gain driver tube rather than a lower input level to a higher gain tube. The helps to maintain S/N ratio. I have DAC,s like the RDL HR-DAC1  that have adjustable pro level outputs working in the analog domain going into the amp. This arrangement works well with me and the dynamic range not loundness of the music is terrific with this setup.[/size]
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Someone who knows what I like... and understands me. Are you free for my next arbitration hearing?  
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Nov 9, 2011 at 7:58 PM Post #15,500 of 42,298
i think jack talked me back into the WA2.
sorry guys.  i just desire that tube sound and warm midrange.   but if i ever come to a place where the WA2 doesn't get the job done i'll just sell it if i could find a buyer and pick up a 6SE
 
Nov 9, 2011 at 8:01 PM Post #15,501 of 42,298
Can someone tell me what the height of the 596 tube is with Glenn's adapter installed?  Would be good to know the ht to the top of the tube and also to the top of the connected adapter wires.  I may have to do a major rearrangement to use this bad boy as I have limited height in my rack.  Thanks.
 
Nov 9, 2011 at 8:01 PM Post #15,502 of 42,298


Quote:
rawrbington said:
i think jack talked me back into the WA2.
sorry guys.  i just desire that tube sound and warm midrange.   but if i ever come to a place where the WA2 doesn't get the job done i'll just sell it if i could find a buyer and pick up a 6SE
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Your next addition will still have you standing among your Woo Audio brothers & sisters. A fine choice.
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Nov 9, 2011 at 8:04 PM Post #15,503 of 42,298


Quote:
windycitycy said:
Can someone tell me what the height of the 596 tube is with Glenn's adapter installed?  Would be good to know the ht to the top of the tube and also to the top of the connected adapter wires.  I may have to do a major rearrangement to use this bad boy as I have limited height in my rack.  Thanks.
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I'm sitting in darkness... and silence. But let me help out! 6 inches from the top leads down to the base of my WA6SE. Or 9.5 inches total from bottom shelf to top of lead wire. Have you appx 12 inches?
 
Nov 9, 2011 at 8:12 PM Post #15,504 of 42,298
Damn nothing is ever easy.  I have 6 1/4 from the top of my Woo to the shelf.  I only have about another 1/4-1/2 I can create without doing a major project.  Darkness and Woo sound like a terrific idea right now.
 
Nov 9, 2011 at 8:16 PM Post #15,505 of 42,298


Quote:
windycitycy said:
Damn nothing is ever easy.  I have 6 1/4 from the top of my Woo to the shelf.  I only have about another 1/4-1/2 I can create without doing a major project.  Darkness and Woo sound like a terrific idea right now.
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From the top of the chassis or the top of the transformers? If the former, drill baby, drill! This tube is worth it! 
 
Nov 9, 2011 at 8:17 PM Post #15,506 of 42,298


Quote:
windycitycy said:
Can someone tell me what the height of the 596 tube is with Glenn's adapter installed?  Would be good to know the ht to the top of the tube and also to the top of the connected adapter wires.  I may have to do a major rearrangement to use this bad boy as I have limited height in my rack.  Thanks.
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6 3/16 " by my measurement.  That is from the bottom of the tube to the top.
 
 
 
Nov 9, 2011 at 8:27 PM Post #15,507 of 42,298


Quote:
silent one said:
Update: Did a good cleaning of the pins resolve your issue? By chance, does your Woo have Teflon tube sockets?
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Thanks for the concern, SilentOne.  I've yet to try and clean them.. nervous about the sandpaper idea.  However, upon inspection of the pins it's like there's a little chip off one or two of them.  Not completely broken off but some metal is displaced.. it's hard to describe.  Maybe that's the issue?  I don't have much time to devote to Head-Fi / listening so I apologize for the delayed response.  As for the Teflon sockets, yes, I believe I do have them (it's the model that was made stock with PDPS so I'm assuming the Teflon was included).
 
Nov 9, 2011 at 8:48 PM Post #15,508 of 42,298
Thanks for the quick reply guys.  It's going to be close as to whether she fits as is or I need to get to drillin
smile.gif
  Sounds like a good investment versus the EML which costs about the same as eating for a month!  My current EML has been going strong but always looking for a backup in case something should happen.  Anyway it sounds like the 596 could be promoted to starter based upon what other Woo owners have reported.
 
Nov 9, 2011 at 8:48 PM Post #15,509 of 42,298


Quote:
jc9394 said:
I will be careful on ECC32 on WA5, Danny (OP) have issue with them.  Maybe he just have a bad pair.
 
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I think I'm not the only user of the ECC32 in a WA5 or WA5LE. Haven't heard anyone with the distortion what I was experienced. You maybe right, I'm just bad luck with these babies.
 
Quote:
clayton sf said:
 
And that is $$$ well-spent! Your new balanced SWA β22/σ22 built by Corey Warner is a piece of art and will certainly compliment your WA22 with 596 tube! Warner & Woo!
 
 
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I second that, it's a piece of art.
 
 
Quote:
nututubes said:
I don't know what amplifier the OP has, but the Mullard ECC32s are wonderful in my WA22. I have two pair and they sound as good...no, better than my Tung Sol BG oval plates. I've run them for months without incident.
 
Jack Wu has taken the time to post this compatability chart; https://spreadsheets.google.com/pub?key=0Ama6VqAKDF7adFlpSFh2ZDVMdnBfS2VpSUxfcEVpTnc&hl=en&output=html
 
FWIW and IMHO, I would suggest that the OP rely on this chart, not anecdotal evidence posted on this forum.
 
 
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Not sure the ECC32 is already listed in the chart but have read some impresions how good sounding of these tubes in the WA5 or WA5LE. Then I purchased a pair in premium, the most expensive output tubes ever bought.
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Quote:
jc9394 said:
OP, Danny, have a WA5LE.  I'm sure the ECC32 probably the best driver tubes for WA22 or WA5 but me just trying to be careful and use my money wisely.
 
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You did, I envy your new toy.
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Quote:
nututubes said:
Quote:

 
I understand, I hope I didn't sound judgmental. I wanted to remind our members about Jack's compatiblity chart.
 
 
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Quote:
musicman59 said:
The ECC32 are in the compatibility chart that Jack published for the WA5 and WA5-LE. I own the WA5-LE and two different pairs of ECC32 (brown base and black base) purchased from two different sellers and have no problems with them. I am sure if Jack even thought those tubes could be a problem they won't be published in the list.
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I would think this is a single case of bad tube experience of a bad luck guy. Actually, before they went bad, they really sound wonderful and amazing with the WA5LE.
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Cheers and enjoy your music all you Woo lovers.
 
Nov 9, 2011 at 8:52 PM Post #15,510 of 42,298


Quote:
windycitycy said:
Thanks for the quick reply guys.  It's going to be close as to whether she fits as is or I need to get to drillin
smile.gif
  Sounds like a good investment versus the EML which costs about the same as eating for a month!  My current EML has been going strong but always looking for a backup in case something should happen.  Anyway it sounds like the 596 could be promoted to starter based upon what other Woo owners have reported.
Click to expand...


You won't regret with the 596, it's a bargain back up and remember PM Glenn for a pair of adapters.
 
 
 
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