do you know in which facrory these were made in? Philips tuves will have codes on them.
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The Woo Audio 2 - Page 67post #991 of 11516/11/14 at 10:44pm
Head-Fi's Best Sellerspost #992 of 11516/12/14 at 5:17pmpost #993 of 11516/12/14 at 5:37pmAre you a DIY type? I installed a Speedball like CCS in my WA3 (link in my signature line).Quote:
Edited by GrindingThud - 6/12/14 at 5:39pmpost #994 of 11516/12/14 at 6:24pmpost #995 of 11516/17/14 at 11:09am
Have a couple NOS rectifier pairs on the For Sale forum if anybody's looking for a steal.
French made Valvo EZ80's and UK made Brimar EZ81's with military print. Printing perfect on both pairs. PM me if
you're interested. CONUS only.post #996 of 11518/3/14 at 7:55pmpost #997 of 11518/3/14 at 7:56pmQuote:
It's not ideal, but with the Tung-Sol 7236 or 5998 power tubes, the combo can still sound quite nice!post #998 of 11518/3/14 at 8:01pmQuote:
I wouldn't recommend it.post #999 of 11518/3/14 at 8:03pm
If you already have the WA2 to drive a specific pair of headphones like the HD800s, and want to add the LCD-3s, it might be ok for a short term fit. But if you're looking for an amp specifically for the LCD-3s, then I'd look into the WA6SE.post #1000 of 11518/3/14 at 8:14pmpost #1001 of 11518/4/14 at 12:24ampost #1002 of 11519/22/14 at 1:00pm
I bought a WA2 second hand a couple of months ago and was very impressed with how smooth and wide it sounded.
It expanded the soundstage of my music and allowed me to focus on different layers of the music easier... background vocals, specific instruments, and better imaging from my headphones and speakers. I also found that the highs were extended a bit more... or at least presented in a way that nuanced female vocals were brought out very nicely. I was really happy with the new presentation of my music by the WA2.
What I noticed though was a lack of midrange. I'm a huge fan of acoustic guitar, and found that the rich, luscious mids my DAC was putting out weren't translating through the WA2. I tried putting in some Amperex PQ Holland 7308 tubes and the mids were improved a bit, but still suffering overall. Vocals and drums still sounded very nice, but I couldn't get over the lack of midrange.
So I opened up my WA2, which has a bunch of Rubycon capacitors. I've never heard Blackgate capacitors before, and my WA2 doesn't have the upgrade to them, so I have no idea how that upgrade would impact the mids. Also, they're hard to find, since they're out of production, so that was a no go for me.
What I did find though, were some Dayton .22uF capacitors that I decided to try changing out. They connect the signal from the power tubes to the driver tubes, and they were fairly easy to unsolder. I ended up trying out a bunch of types, and decided that the best sounding capacitors I could find were Orange Drop .33uF 400VDC 715P capacitors. (There are a whole bunch of videos on youtube that compare these capacitors with vintage "Black Beauty" capacitors that are used for tone control in vintage guitars. see http://www.youtube.com/watch?v=92G-jw4TqS4 and http://www.youtube.com/watch?v=nQcmYvpjx7s)
Anyway, after swapping in the Orange Drops, the mids have definitely improved. Instead of simply hearing the higher "plucky/twangy" mids of acoustic guitar, I hear a fuller bodied, harmonic sound. The impessive soundstage is also completely intact, as well as the bass. Higher ranged tones have been reduced just a bit (which I think is due to putting in a .33uF instead of a .22uF, but I think this was a trade off for the mids), but the highs are still impressively extended and airy.
Anyway just putting this out there for anyone who felt the same way about the WA2. I love this amp and welcome any other comments or suggestions to get the most out of it!
Edited by mikoss - 9/22/14 at 1:14pmpost #1003 of 11519/22/14 at 1:37pmInteresting post, Mikoss. I used to be a professional classical guitarist--which has a different timbre than acoustic, of course, but I understand what you're saying about the lower mids--at least with the stock WA2. I've never looked at the guts of my WA2, but I have pursued other upgrades. If you haven't swapped out the stock power tubes yet, that's where I'd start (you can read my comparison of the Tung Sol 5998s and Tung Sol 7236s on the WA2 tube page). After I upgraded my power tubes, the mids really became spectacularly good when I upgraded my interconnects. I tested a lot of them and liked Silnote's Morpheus Reference Series II the best (in my price range). Silnote's web page and Audiogon pages don't look very professional (there's some really bad writing), but they sure know how to make cables. With the right tubes and cables, the WA2 is absolutely magical.post #1004 of 11519/22/14 at 1:46pm
Thanks for the info @Chesterfield - I have only tried the power tubes which came with the WA2 I bought, which are Sylvania 7236 tubes. I would have to say that I agree with your comparison of the 5998s, that the 7236's indeed sound polished. Larger soundstage on the 5998s sounds crazy! If I ever find some for a decent price, I'll try them out. What are you rolling for driver tubes? Telefunkens? I adore the sound of the Amperex tubes, although the Siemens E88CCs have great bass and highs.post #1005 of 11519/22/14 at 1:57pmThanks, Mikoss. At the moment, I'm using Amperex 7308s, which I like quite a lot. I'm saving for Telefunken 6922s, but I recently made a pretty major (for me) audio purchase (a Silnote Posieden ES power cord, which is amazing), so the Telefunkens will have to wait a few months. If you click on my user name, then "select profile", you can see a complete list of what I'm using (I love that Head-Fi feature). You'll end up adoring your WA2.
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