[ColSaulTigh]

The Wonder Twins are up and running!

 

[Leon99]

Thank you for all the help and suggestions, I really appreciate it

I think this small piece did not break because I took the tube to clean it, I did not hear any sound that something was broken, it may have been broken for a long time and I do not know the reason, perhaps due to the heat.

I really freaked out and said does this tiny little piece matter,
Because it does not connect to anything inside the amplifier and also does not contain any wires, I tried the first time and the tube was not glowing. And there is no sound, I discovered that I put it in the wrong position.

Now the tube is glowing again, and my wallet is also glowing
I don't need to spend 200$ lol

 

[jonathan c]

The Brimar CV1893 KB/FE + the RCA 13DE7 pair are a goosebumping / spine-tingling trio:

 

[senseitedj]

The legend finally has arrived... GEC U52 Brown base. Even the craftsmanship of the glass is a cut above the rest.

Currently burning in - impressions to come!

 

[ColSaulTigh]

Awesome! Please keep us updated.

 

[VanHai]

What a pair.

Mullard 5V4G + Zenith 13EM7 = Awesome sound, amazing synergy.

 

[senseitedj]

What a pair.

Mullard 5V4G + Zenith 13EM7 = Awesome sound, amazing synergy.

Looks like a nice combo

Are the 13EM7 from Zenith more special compared to other brands ? The Zenith 13EM7 seems to receive high praise in this thread.

 

[VanHai]

Looks like a nice combo

Are the 13EM7 from Zenith more special compared to other brands ? The Zenith 13EM7 seems to receive high praise in this thread.

I have several pairs of 13EM7, RCA, Zenith, Sylvania and stock from Woo and have tried all of them with about 10-15 rectifiers from USAF596, Mullard GZ30, Brimar 5Z4G, RCA, Bendix, Kenrad, Sylvania and etc..

I was tubes rolling and put in this pair, immediately everything opened up. They really danced together, i do not think any special about the Zenith. Just a combination of correct tubes that synergized together.

 

[senseitedj]

I have several pairs of 13EM7, RCA, Zenith, Sylvania and stock from Woo and have tried all of them with about 10-15 rectifiers from USAF596, Mullard GZ30, Brimar 5Z4G, RCA, Bendix, Kenrad, Sylvania and etc..

I was tubes rolling and put in this pair and immediately everything opened up. They really danced together, i do not think any special about the Zenith. Just a combination of correct tubes that synergized together.

Nice. Im using the rca 13em7. Woo audio doesn't seem to specify the brand when u get on their website...

Will have a go at rolling zenitu 13em7s now. Where did you buy yours?

 

[VanHai]

Nice. Im using the rca 13em7. Woo audio doesn't seem to specify the brand when u get on their website...

Will have a go at rolling zenitu 13em7s now. Where did you buy yours?

I got a pair of generic, no name 13EM7 from Woo. The Zenith pair, i bought from E-bay.

 

[ColSaulTigh]

I've run the following 13EM7's:

Westinghouse (from Woo, with adapters) - average.
Matched pair of Sylvania Coin Base 13EM7 (eBay) - nice and punchy.
International Servicemaster (from Woo, with adapters) - also punchy, really strong.
ANOTHER matched pair of Sylvania Coin Base 13EM7 (ebay) - same as above.
GE 13EM7 (eBay) very similar to the Sylvanias.

They Sylvanias tend to "squeak" for a bit until they warm up. They are also the noisiest of the bunch. The Westinghouse are quiet but a bit flat. Personally, I like the International Servicemasters.

 

[output555]

It's really hard to say for sure. Any of those parts you mentioned could be getting old. I also thought you may be getting to the end of the life on the driver tubes or maybe even the rectifier.

Parts as you mentioned go bad and get old. A year ago I had three capacitors go bad on the WA6-SE gen 1. I shipped it back to Woo Audio and they replaced the old caps and also preformed a full service and testing. I'm not sure what they did, besides replace the bad caps because the amp has never sounded better. In my book it was money well spent. You may want to replace your tubes or reach out to Woo Audio about maybe sending your amp in for service.

Can I ask what you paid for the caps replacement?

 

[RobertSM]

Can I ask what you paid for the caps replacement?

So it was $240.00 for the three new capacitors, full service, testing and labor+ shipping back to me. I don't know exactly what they did, but it arrived back sounding better than it ever had before.

 

[RobertSM]

The legend finally has arrived... GEC U52 Brown base. Even the craftsmanship of the glass is a cut above the rest.

Currently burning in - impressions to come!

The GEC U52 is my hands my down favorite rectifier with the WA6-SE. I've rolled 10+ different rectifiers with this amp. To my ears the U52 is the top dog. Enjoy.

 

[RobertSM]

My favorite rectifier in the WA6-SE.