[billyleungkt]

Something on my doorstep today

Woohoo!! Merry Christmas guys!!

 

[Bonddam]

Is it normal for the Tung sol 5998 to hiss at no volume, I noticed the 5998 hiss when no music is playing or at low volume, but the hiss doesn't increase when I turn the volume up. When I swap the wa2 stock tube (Jan 6080) back, I didn't notice any hiss at all at lower volume, should I be worried about this hiss?

Well had two different wa5 Le a gen 1 and gen 2. My problem tubes where problem on gen 2 but no problems on gen 1. So something in the design of the amps.

 

[Bonddam]

Does any one looking for real mullardEZ80 rectifiers that I purchased from Woo. They have been sitting in my tube closet and probably will never get used. I went and bought wa234 so my end game amp is coming in 4 weeks. I'm sitting on tubes I have no use for and selling on eBay gets me paying more in fees then what I can get back.

 

[jclyle]

I have a Valhalla 2 along with 12Axx to 6922 adapters, and a stash of 12Axx tubes.
Does the WA2 behave when using these adapters with 12AT7 or 12AU7 tubes? I don't see them listed in the compatibility chart on wooaudio.com

 

[jonathan c]

I have a Valhalla 2 along with 12Axx to 6922 adapters, and a stash of 12Axx tubes.
Does the WA2 behave when using these adapters with 12AT7 or 12AU7 tubes? I don't see them listed in the compatibility chart on wooaudio.com

The 12AT7 / 12AU7 tubes are ‘rewired’ for 6V use via those adapters. Also the filament current (300 mA) is under that of the 6922 / 6DJ8 tube (365 mA). The 12AT7 / 12AU7 + adapters are fine in the WA2.

 

[billerb1]

I have a Valhalla 2 along with 12Axx to 6922 adapters, and a stash of 12Axx tubes.
Does the WA2 behave when using these adapters with 12AT7 or 12AU7 tubes? I don't see them listed in the compatibility chart on wooaudio.com

They are all that I use...after going thru so many 6922 types. My favorites:
https://www.ebay.co.uk/itm/274128808004
https://www.langrex.co.uk/products/...mium-rft-german-gold-pin-nos-valve-tube-lc39/
https://www.ebay.com/itm/325012251227?hash=item4bac3d625b:g:l5AAAOSw-Opg6ygQ

Bigger, more open sound. More nuance, much more natural timbre. More like being in the studio. Good luck.

 

[exchez]

A couple things came in the mail today:

1. Sorbothane! I did a little internet research and found out that the stuff is very good at vibration insulation. Just took a guess that duro 50 at 1/4 thickness would work well for my needs and it seems to be the right amount (you can kinda see it underneath the shelf legs). I'm hoping this will let me use my mechanical keyboard without upsetting any of my slightly microphonic tubes.
   
   
   
   
2. But more exciting than Sorobothane is that I finally pulled the trigger on a pair of Brimar CV455 tubes (yes, those triple micas from Footscray!) which also arrived today. Just popped them in for an hour and I'm very impressed. They sound every bit as good as the 1950's Amperex White Label (PQ) 6992 tubes and possibly better. Time will tell.
   
   

I'm excited to try out a few more 12AT7 tubes that @jonathan c and @billerb1 have mentioned as well. The better specimens are a little pricey to get in matched pairs, but compared to an E188CC Telefunken or PW 6922, price ain't that bad.

Cheers y'all

 

[nieveulv]

hey all. just purchased the Verite Open headphone from ZMF and loving it!!! However, on my Wa2 it sounded kinda , non 3d for lack of better terms. and mids do tends to come forward a little. My wa2 have the following tubes

- tung sol 7236
- siemens e88cc platinum
- rectifier was modified to solid state due to a broken tube, will be changing these rectifier to new tubes.

What can be done to enhance 3d soundstage and reduce forwardness a little. Any recommended rectifier tubes that helps with this. I'm pretty sure the solid state rectifier may have something to do with the lack of 3dness and seperation, and i forgot the sound before the tubes broke (never tested with verite before) . For now I'm thinking either the rft ez80 or the philip miniwatts ez80 as those are easy to get.



Thanks for any helpp.

 

[jonathan c]

hey all. just purchased the Verite Open headphone from ZMF and loving it!!! However, on my Wa2 it sounded kinda , non 3d for lack of better terms. and mids do tends to come forward a little. My wa2 have the following tubes

- tung sol 7236
- siemens e88cc platinum
- rectifier was modified to solid state due to a broken tube, will be changing these rectifier to new tubes.

What can be done to enhance 3d soundstage and reduce forwardness a little. Any recommended rectifier tubes that helps with this. I'm pretty sure the solid state rectifier may have something to do with the lack of 3dness and seperation, and i forgot the sound before the tubes broke (never tested with verite before) . For now I'm thinking either the rft ez80 or the philip miniwatts ez80 as those are easy to get.



Thanks for any helpp.

Tube rectification should really help. High high recommendation: RFT EZ81 ‘foil’ getter. If not that, RFT EZ81 ‘halo’ getter. Inexpensive and excellent / unbelievably good. EDIT: Also, try Brimar CV455 KB/FB (Footscray) or RFT ECC81 ‘foil’ getter / ‘halo’ getter with 12A#7 (top) => E88CC (bottom) adapters. Moving off the 6922 / 6DJ8 tube type will yield improvements.

 

[exchez]

Tube rectification should really help. High high recommendation: RFT EZ81 ‘foil’ getter. If not that, RFT EZ81 ‘halo’ getter. Inexpensive and excellent / unbelievably good. EDIT: Also, try Brimar CV455 KB/FB (Footscray) or RFT ECC81 ‘foil’ getter / ‘halo’ getter with 12A#7 (top) => E88CC (bottom) adapters. Moving off the 6922 / 6DJ8 tube type will yield improvements.

@jonathan c any good advice on where to find an RFT EZ80 with foil getters? I have a pair from the 50s but they are D getters.

 

[jonathan c]

@jonathan c any good advice on where to find an RFT EZ80 with foil getters? I have a pair from the 50s but they are D getters.

The sellers that I have used are (were?) in Russia and in Ukraine. On EBay, I have had excellent items and service from ‘delax777mechanics’ (Ukraine).

 

[billerb1]

Here's a link for RFT ECC81 foil disc getters. Can't vouch for the seller however.
https://www.ebay.com/itm/234442698371?hash=item3695dfae83:g:~hcAAOSwKP5iG7wC

Here are the adapters you will need to use them in your WA2.
https://pulsetubestore.com/products...uction-base-9-pin-b9a-noval-not-made-in-china

 

[GPJ7]

Flavor of the month ... miniwatt EZ80 hiding ...

 

[exchez]

Here's a link for RFT ECC81 foil disc getters. Can't vouch for the seller however.
https://www.ebay.com/itm/234442698371?hash=item3695dfae83:g:~hcAAOSwKP5iG7wC

Here are the adapters you will need to use them in your WA2.
https://pulsetubestore.com/products/12axx-to-ecc88-adapter-plug-play-novib-©-1960s-nos-british-mcmurdo-phenolic-socket-on-top-plus-vibration-reduction-base-9-pin-b9a-noval-not-made-in-china

I bought a couple of those and I really like them. They are my main drivers since the CV455 I got from Langrex crapped out after a week (7 days and they still have responded to my email about refund). Any leads on a foil getter EZ80? I've only seen D and halo getters if those.

 

[billerb1]

I bought a couple of those and I really like them. They are my main drivers since the CV455 I got from Langrex crapped out after a week (7 days and they still have responded to my email about refund). Any leads on a foil getter EZ80? I've only seen D and halo getters if those.

Nope...but I will say that once I made the move to EZ81's I've never looked back. I'd highly recommend you keep an eye out for the RFT EZ81 foil getters. They show up fairly regularly and aren't usually very expensive. I'm alternating between them and Marconi U709's (which are ridiculously expensive, lol) and the RFT's really hold their own when I compare them.