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Woo Audio Amp Owner Unite - Page 2064

post #30946 of 30957
Quote:
Originally Posted by Badas View Post
 


Hhhhmmm,

 

I'm not actually using volume control on my WA22. I have it set in one position. Low Gain at 2/3's volume. I then use my Oppo HA-1 as a DAC / Pre-amp and use it's volume to control the listening level. That way I can sit back and use the Oppo's remote control for volume.

 

Is there anything wrong doing it that way?

 

If I carry on using it that way I won't wear out the Woo's volume control. :o2smile:

 

As I mentioned before, it's always better for SQ to have the gain of the last item in an audio chain as low as possible. Since the Woo is the last item, you want to keep its volume as low as possible while keeping the input line voltage as high as possible (without exceeding 2V at 0db for RCAs or 4V at 0db for XLRs). Ideally this means you bypass any attenuation stage in the DAC for even better SQ (I know the HA-1 has such a mode). So now you're left with twiddling the Woo's knob to adjust volume. But with a stepped attenuator this becomes annoying since sometimes the desired volume is in-between two steps. Now you have to turn off bypass mode in your DAC and attenuate on the DAC by, say, 10db, just so you have enough room to work with on the amp's volume knob.

 

Yeah, stepped attenuators are the tools of the devil. A lot of high-end amp makers have been moving away from these things lately, and I hope Woo follows suit with the WA22.

 

Oh, and any audiophile volume control won't wear out for many, many years, and when they do, you're already out of warranty and so can just have it with a soldering iron and a replacement. In fact there's a better chance of it going bad if you _never_ move it.


Edited by Stereolab42 - Yesterday at 4:51 pm
post #30947 of 30957

Guess I am just not as picky about volume control to have noticed an issue.  I actually like the DACT vs the POTS on the 6SE.  There isn't anything harmful in adjusting the DAC if it permits it by 1-2 DB's.  The Matrix for example has digital output controls built into their ASIO driver, so I can adjust it to -2db on the master channel or on independent left/right channels.  My WA22 stays at the 9 o'clock position pretty much on all music aside from 1-2 albums.

 

Hopefully you enjoy the WA5 and it is a bit more to your liking.

post #30948 of 30957
Quote:
Originally Posted by Stereolab42 View Post
 

 

Yeah, stepped attenuators are the tools of the devil. A lot of high-end amp makers have been moving away from these things lately, and I hope Woo follows suit with the WA22.

 

Oh, and any audiophile volume control won't wear out for many, many years, and when they do, you're already out of warranty and so can just have it with a soldering iron and a replacement. In fact there's a better chance of it going bad if you _never_ move it.

Ain't THAT the truth.  In what's left of my mind, I think having a stepped attenuator is a good thing, IF the face plate is accurately marked so you can easily go to the place of goodness on the volume control.  But, no, it's ALWAYS a place where it's just not quite the right level.  Up, and it's too loud, one notch down, too soft.  So, give me the old volume control on my WA6.  I'll find the right level and, you know what, it won't drive me crazy.:smile: 

post #30949 of 30957
Quote:
Originally Posted by Stereolab42 View Post
 

 

As I mentioned before, it's always better for SQ to have the gain of the last item in an audio chain as low as possible. Since the Woo is the last item, you want to keep its volume as low as possible while keeping the input line voltage as high as possible (without exceeding 2V at 0db for RCAs or 4V at 0db for XLRs). Ideally this means you bypass any attenuation stage in the DAC for even better SQ (I know the HA-1 has such a mode). So now you're left with twiddling the Woo's knob to adjust volume. But with a stepped attenuator this becomes annoying since sometimes the desired volume is in-between two steps. Now you have to turn off bypass mode in your DAC and attenuate on the DAC by, say, 10db, just so you have enough room to work with on the amp's volume knob.

 

I will never use a manual volume control. I sit to far away plus my chair is to comfortable. So remote volume is a must.

I always planned to use the Oppo HA-1 as the volume control.

Oppo specs say the output is 4.6 ± 0.3 Vrms for XLR.

So I guess as long as I don't hit full volume on the Oppo the Woo will be fine.

At the moment I have Woo set on 2/3's power low gain. Oppo volume gets controlled between 0 and 3/4's power also low gain.

post #30950 of 30957
Quote:
Originally Posted by Stereolab42 View Post
 

 

Yeah, stepped attenuators are the tools of the devil. A lot of high-end amp makers have been moving away from these things lately, and I hope Woo follows suit with the WA22.

 

 

Unless you are using digital attenuator, the low level imbalance with standard pots bugs the heck out of me.  I usually listen at a level low enough I do notice one side is louder than other...

post #30951 of 30957
Quote:
Originally Posted by Badas View Post
 

 

I will never use a manual volume control. I sit to far away plus my chair is to comfortable. So remote volume is a must.

I always planned to use the Oppo HA-1 as the volume control.

Oppo specs say the output is 4.6 ± 0.3 Vrms for XLR.

So I guess as long as I don't hit full volume on the Oppo the Woo will be fine.

At the moment I have Woo set on 2/3's power low gain. Oppo volume gets controlled between 0 and 3/4's power also low gain.

 

 

When I had the WA22, I usually set it around 60% and use PWD to control the volume.  Just like you, I have a very comfortable listen chair that I do not feel like get up just to change the volume once a while.

post #30952 of 30957

For old time's sake here is an inside picture of my WA22 that I took last week. Got to admire the beautiful simplicity of the wiring:

 

post #30953 of 30957

No steps here. The Alps volume pot on my 'Pre' is down right buttery...love turning the bad boy!

post #30954 of 30957
Quote:
Originally Posted by Stereolab42 View Post
 

For old time's sake here is an inside picture of my WA22 that I took last week. Got to admire the beautiful simplicity of the wiring:

 

 

 

I missed this bad boy...

 

post #30955 of 30957
Quote:
Originally Posted by Silent One View Post
 

No steps here. The Alps volume pot on my 'Pre' is down right buttery...love turning the bad boy!

 

I would love to see a delta1 on a WA5...

 

http://www.amb.org/audio/delta1/

post #30956 of 30957

Can someone explain to the uninitiated what all those beefy extra caps actually do? Because I think I'm getting the same sort of caps in my WA5 with the upgraded parts.

post #30957 of 30957
Quote:
Originally Posted by jc9394 View Post
 

 

I would love to see a delta1 on a WA5...

 

http://www.amb.org/audio/delta1/

I guess we'll be peering inside of yours with the Delta1 in place. :evil: Perhaps, 2015?

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