jerico
100+ Head-Fier
- Joined
- Nov 12, 2010
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This is going to be a bit of a long post, but here's a quick synopsis: I set out to do some tube rolling on my WA22 to see what mated best with the LCD2. At first, they really did not sound good., I found the amp/can combo to be sensitive to tube changes, but in the end got to a great sounding combo. It took some work!
Now on to the details:
My source is a Wyred4Sound DAC2 into the WA22 with an Audio Quest Carbon balanced cable. The LCD2 uses a balanced ALO 8 wire Chain Mail cable. The DAC is hooked up to a dedicated Mac Mini via an Audio Quest Carbon USB cable. All of my music is Apple Lossless, and stored on an external NAS. I use iTunes/Pure Music for playback, and use the memory play feature of PM to minimize network traffic issues (the Mac connects to the NAS via a power line Ethernet adapter).
When I first got the LCD2, I plugged them into my WA22 with the tubes that I had previously selected for my Beyerdynamic T1s. Off the bat, I felt that the T1s needed a little bass help, so I selected tubes that I found had a little punch: EML 5U4G rectifier, Shuaguang Treasure CV181Z drivers, GE 6AS7G power tubes.
This proved to be WAY too bassy for the LCD2s. It sounded like there was no bass control - just boomy bass all over. The soundstage was very cramped as well, and the highs sounded recessed and muffled. My first thought was that my amp simply can't handle these cans. But I did't want to give up, as others on these boards have reported good results with the WA22 (and the WA6 variants). So... Time to tube roll.
Thinking I needed to use higher gain power tubes give the LCD2 more juice, i swapped out the 6AS7Gs for Sylvania 7236s (Woo upgrade tubes). This change seemed simply to make everything louder - to the point that i can't really get beyond 8 o'clock on the volume. And the bass still sounded way too bloated. I also felt that the 7236 was bringing some noise into the mix. I reverted back to the 6AS7G.
Next, I swapped out the Treasures (also Woo upgrade tubes) for some KenRad VT231s. This was a bit of an improvement - not huge, but they brought out a little bit of treble and helped to very slightly control the bass. But I still found the sound to be bloated and fuzzy.
Next, I dug out my Sophia Princess rectifier (yet another Woo upgrade tube). I didn't like this tube at all with my T1s - it just didn't give them any punch. But with LCD2s it is perfect - that bass bloat is gone, and there is a little bit of sparkle to the highs. Not sparkly like the T1 - actually nothing like that at all. But not recessed or rolled off, either. And details come through, that were previously being obscured by the fuzzy bass. And the sound stage widened out (not massively, but it no longer sounded collapsed). This combo sounds GREAT - my first taste of the LCD2 sound that so many have been describing.
The last step was another swap of the power tubes, to see how thy interact with the Princess. I threw in the stock GE6080 (which I quite like with the T1, especially for the price - enough that I have a spare pair). The effect here was minor - not much different from the 6AS7G, but with these I lost a bit of bass, too much actually. From there, I swapped in a pair of Chatham 2399 tubes (which I am told are similar to 5998 tubes, if not the same).
This combo made me VERY happy - the bass reappeared. Not TOO much, but not recessed either. There's a hint of treble sparkle, but again not TOO much. Plenty of detail too, with just the right amount of tubey goodness, and nice imaging. There is still a volume issue - I can't get much beyond 8 o'clock (the volume steps are rather large, so it's tough to get the "perfect" level). But the tone is awesome.
I am ending my rolling here for now, as it is time to get back to enjoying music instead of OCD'ing on my gear! But I do have a Mazda GZ4 en route, which I will tinker with when it arrives. Until then - hope this helps some of you!
Justin
Now on to the details:
My source is a Wyred4Sound DAC2 into the WA22 with an Audio Quest Carbon balanced cable. The LCD2 uses a balanced ALO 8 wire Chain Mail cable. The DAC is hooked up to a dedicated Mac Mini via an Audio Quest Carbon USB cable. All of my music is Apple Lossless, and stored on an external NAS. I use iTunes/Pure Music for playback, and use the memory play feature of PM to minimize network traffic issues (the Mac connects to the NAS via a power line Ethernet adapter).
When I first got the LCD2, I plugged them into my WA22 with the tubes that I had previously selected for my Beyerdynamic T1s. Off the bat, I felt that the T1s needed a little bass help, so I selected tubes that I found had a little punch: EML 5U4G rectifier, Shuaguang Treasure CV181Z drivers, GE 6AS7G power tubes.
This proved to be WAY too bassy for the LCD2s. It sounded like there was no bass control - just boomy bass all over. The soundstage was very cramped as well, and the highs sounded recessed and muffled. My first thought was that my amp simply can't handle these cans. But I did't want to give up, as others on these boards have reported good results with the WA22 (and the WA6 variants). So... Time to tube roll.
Thinking I needed to use higher gain power tubes give the LCD2 more juice, i swapped out the 6AS7Gs for Sylvania 7236s (Woo upgrade tubes). This change seemed simply to make everything louder - to the point that i can't really get beyond 8 o'clock on the volume. And the bass still sounded way too bloated. I also felt that the 7236 was bringing some noise into the mix. I reverted back to the 6AS7G.
Next, I swapped out the Treasures (also Woo upgrade tubes) for some KenRad VT231s. This was a bit of an improvement - not huge, but they brought out a little bit of treble and helped to very slightly control the bass. But I still found the sound to be bloated and fuzzy.
Next, I dug out my Sophia Princess rectifier (yet another Woo upgrade tube). I didn't like this tube at all with my T1s - it just didn't give them any punch. But with LCD2s it is perfect - that bass bloat is gone, and there is a little bit of sparkle to the highs. Not sparkly like the T1 - actually nothing like that at all. But not recessed or rolled off, either. And details come through, that were previously being obscured by the fuzzy bass. And the sound stage widened out (not massively, but it no longer sounded collapsed). This combo sounds GREAT - my first taste of the LCD2 sound that so many have been describing.
The last step was another swap of the power tubes, to see how thy interact with the Princess. I threw in the stock GE6080 (which I quite like with the T1, especially for the price - enough that I have a spare pair). The effect here was minor - not much different from the 6AS7G, but with these I lost a bit of bass, too much actually. From there, I swapped in a pair of Chatham 2399 tubes (which I am told are similar to 5998 tubes, if not the same).
This combo made me VERY happy - the bass reappeared. Not TOO much, but not recessed either. There's a hint of treble sparkle, but again not TOO much. Plenty of detail too, with just the right amount of tubey goodness, and nice imaging. There is still a volume issue - I can't get much beyond 8 o'clock (the volume steps are rather large, so it's tough to get the "perfect" level). But the tone is awesome.
I am ending my rolling here for now, as it is time to get back to enjoying music instead of OCD'ing on my gear! But I do have a Mazda GZ4 en route, which I will tinker with when it arrives. Until then - hope this helps some of you!
Justin