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Modify your Woo 6. . Sophia and EML 274B . Images pages 32, 33, 34 of int. and ext. and... - Page 4

post #46 of 888
4/8/08 at 3:37am
Quote:
Originally Posted by PITTM View Post
The other day Jack told me that the power supply splitting mod jamato is talking about is experimental and he will not do it.

"The power supply dividing mod is experimental as suggested. I would not feel comfortable to offer this mod unless we have tried it."

My woo is being built this week so I guess not.
Thanks for the info PITT. It certainly makes sense on his end. It's his reputation that goes into every amp, and he'll obviously need to feel confident with it before selling them this way.

From the looks of things, there's quite a few Woo6 owners within a scant few hours of one another in this thread.
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post #47 of 888
4/8/08 at 7:44am
Thread Starter 
Well I know that he will be using it.
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post #48 of 888
4/8/08 at 1:10pm
Quote:
Originally Posted by jamato8 View Post
Well I know that he will be using it.
Maybe sometime I can drive the amp, the necessary parts, and some cash over to the Sonoma area and leave it with you......then dinner at the restaurant of your choice is on me when I come back to pick it up??
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post #49 of 888
4/8/08 at 1:37pm
Thread Starter 
Quote:
Originally Posted by cAsE sEnSiTiVe View Post
Maybe sometime I can drive the amp, the necessary parts, and some cash over to the Sonoma area and leave it with you......then dinner at the restaurant of your choice is on me when I come back to pick it up??
Probably could be worked out.
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post #50 of 888
4/8/08 at 2:15pm
Yeah, I imagined it would be something he would offer in the future, but I didn't want to wait too much longer(I;ve now been told my amp is shipping next week !!) and so I ordered it straight away. Man I would take you anywhere outside of French Laundry if you did that mod for me!! Maybe the three of us can meetup sometime.
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post #51 of 888
4/8/08 at 2:26pm
Quote:
Originally Posted by jamato8 View Post
Probably could be worked out.
I never noticed you were in Santa Rosa. Now that's bad news for me if you're willing to do these services for a fee.
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post #52 of 888
4/8/08 at 3:47pm
I am unfamiliar with this amp, but looking at the photos on the website it
appears that the output is transformer coupled. Is this the case?
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post #53 of 888
4/8/08 at 5:48pm
You are correct.

Quote:
Originally Posted by Vaughn View Post
it appears that the output is transformer coupled. Is this the case?
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post #54 of 888
4/8/08 at 11:09pm
john, it's been approx. 100 hrs. since the power supply mod. and
i'm convinced this is the single most significant mod/upgrade i've
applied to the wa6...all the other upgrades have made noticeable
improvements in transparency, soundstage, low level resolution,
tone and dynamics, but this power supply mod has taken the
maxed wa6 to a completely different level...i'm not certain if this
is from the power supply mod alone or a combination of the prior
upgrades and the power mod...

everything sounds so realistic and expansive...i'm amazed at how
open and transparent acoustic instruments sound and more
impressed at how effortless and unfettered everything sounds now...
even hard driven and heavy passages seem to be done effortlessly...
the bass and mid bass have so much more weight to the notes
without sounding heavy nor soft...the mids are lucid yet full...
the highs don't sound edgy nor display that sibilant sharpness
when crescendos are reached...that digital sound is absent...drums
and high hats sound convincingly realistic...nothing sounds
artificially compressed...i think i'm finally hearing what the source
is really like...

once jack and his partners test and confirm your power mod
as a significant improvement, and more importantly that it's safe,
the stock wa6 should be changed to this configuration...i'm not an
engineer so i'll leave the empirical testing to them, but i haven't
noticed any anomalies in the rectifier, power/drive tubes yet...
no over-glow nor heating has been observed so far...and yes,
the sound is getting better each day, it seems...
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post #55 of 888
4/9/08 at 3:43am
Thread Starter 
It draws the same amount of mA.

It is simple, when you have two tubes fighting for the same current what is going to happen? Now add a cap for each tube and a resistor before that cap so that in a way each tube can not "see" the other supply or pull current from it and now you have a good supply for each tube which improves all areas, as you have noticed. I have done this for years. I have worked with tubes for many years and spent way too many hours experimenting but it has led to some good conclusions and some meaningful topology applications that improve sound.
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post #56 of 888
4/10/08 at 5:54pm
damn you guys,

I finally cracked today and decided to get v-caps in my new woo 6, just before jack started the build. Hope it sounds good, not that I have a stock one to compare it to or anything. It will be a "stock" WA6 with just the v-caps and no blackgates.
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post #57 of 888
4/10/08 at 6:31pm
Quote:
Originally Posted by PITTM View Post
damn you guys,

I finally cracked today and decided to get v-caps in my new woo 6, just before jack started the build. Hope it sounds good, not that I have a stock one to compare it to or anything. It will be a "stock" WA6 with just the v-caps and no blackgates.
if budget allows, you should go for the cathode bypass black gate upgrade too,
the one for $30...even better yet, ask him to use the N-series 470 microfarad
black gate caps instead...though it'll cost you double...jamato noticed a
significant improvement over the stock cathode bypass caps...
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post #58 of 888
4/10/08 at 7:12pm
Quote:
Originally Posted by PITTM View Post
damn you guys
.
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post #59 of 888
4/10/08 at 9:20pm
Might as well just get all the upgrades and eat ramen noodles for the next two months
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post #60 of 888
4/10/08 at 10:00pm
Quote:
Originally Posted by HeadphoneAddict View Post
Might as well just get all the upgrades and eat ramen noodles for the next two months

That's what I did. I e-mailed Jack two days ago and added the DACT to my WA6. So now it is REALLY max'd.

Oh, that afternoon I went to Sams Club and bought a case of ramen as well.

...and meeting up with you NorCal guys sometime would be great
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Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Modify your Woo 6. . Sophia and EML 274B . Images pages 32, 33, 34 of int. and ext. and discussion of the SE . . .