The Woo Audio 2
Nov 1, 2021 at 3:50 PM Post #1,576 of 1,584

bpiotrow13

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Although the changes that caps bring will be much smaller than tubes, caps do have their own sound characteristics. I don't know the brand behind Woo's Black Gate caps, Mundorf/Audio Note/Jensen/etc are normally considered "premium" caps, and are outrageously expensive - very low performance/price ratios.

For more sound characteristics of caps, I recommend you read the following thread, and see if you can find some caps that suit your need.
https://www.head-fi.org/threads/orgy-of-capacitors-the-cap-thread.284863/
Thanks, will go through. May well be not worth the price as i understand.
 
Nov 6, 2021 at 11:48 AM Post #1,578 of 1,584

bpiotrow13

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Is it necessary to have the tubes you buy "balanced" as well as matched for Power tubes on the WA2? I am thinking about picking some up and the options are: "matched" and also "balanced" Do I need to do both? I guess I don't know what "balanced" means.
Me neither:) i guess balanced means they have close emission levels. I know many people ignoring matching and living perfectly happy with that.
 
Nov 6, 2021 at 1:16 PM Post #1,579 of 1,584

exchez

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Is it necessary to have the tubes you buy "balanced" as well as matched for Power tubes on the WA2? I am thinking about picking some up and the options are: "matched" and also "balanced" Do I need to do both? I guess I don't know what "balanced" means.
Each tube has two triode sections. When they're balanced each section will produce about the same amount of gain. Some amps use only one tube to amplify the right and left channels thru each triode section. In that case, it's important to have them balanced. The WA2 uses separate tubes for the right and left channels so the tubes only need to be matched against each other, but don't need to be internally balanced.
 
Nov 6, 2021 at 5:19 PM Post #1,580 of 1,584

MisterMoJo

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Each tube has two triode sections. When they're balanced each section will produce about the same amount of gain. Some amps use only one tube to amplify the right and left channels thru each triode section. In that case, it's important to have them balanced. The WA2 uses separate tubes for the right and left channels so the tubes only need to be matched against each other, but don't need to be internally balanced.
awesome! thank you!
 
Nov 10, 2021 at 12:13 PM Post #1,581 of 1,584

Onik

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I'm almost done with my upgrade, I'm really new to tube circuit design, so I have a question whats the reason for that 100uf Cap to Ground? 20210919_165202~2.jpg

This is how my upgrade looks so far, I had issues with ground loop/hum for that 100uf cap but after soldering to its original ground the hum is gone.
20211108_161856.jpg
 
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Nov 10, 2021 at 1:23 PM Post #1,582 of 1,584

bpiotrow13

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I'm almost done with my upgrade, I'm really new to tube circuit design, so I have a question whats the reason for that 100uf Cap to Ground? 20210919_165202~2.jpg

This is how my upgrade looks so far, I had issues with ground loop/hum for that 100uf cap but after soldering to its original ground the hum is gone.
20211108_161856.jpg
Impressive! Let us know how the sound changed:)
 
Nov 11, 2021 at 8:13 AM Post #1,583 of 1,584

hodgjy

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I'm almost done with my upgrade, I'm really new to tube circuit design, so I have a question whats the reason for that 100uf Cap to Ground?

This is how my upgrade looks so far, I had issues with ground loop/hum for that 100uf cap but after soldering to its original ground the hum is gone.
It looks like you answered your own question! :)

The cap here helps filter out noise, usually high frequency, but it looks like in this design it also helps with mains hum.
 
Nov 13, 2021 at 2:57 AM Post #1,584 of 1,584

billyleungkt

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Hello WA2 guys. I just place my order on wa2. I have read TS5998 is the best currently available. But i also see some variations. 1. Top getter 2. Bottom getter. which is the better one as 2. Is more exp.

For driver tubes, do you suggest these 2 to get different sound signature? What else i can look for?
1. Amperex 6dj8 bugle boy
2. JAN-Sylvania 7308

Cheers
 

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