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La Figaro 339 - Page 149

post #2221 of 3713
Quote:
Originally Posted by Ultrainferno View Post
 

I'll have to get some of those westinghouse tubes it seems. It's been a long time since I used the 6SJ7WGT, I tend to use the mullard EF80.

The Thomson 6080WA were getting extremely hot in the 339 so I replaced them with the Chatham 6AS7G

 

How do you determine if your tubes are running too hot? I have some of those Thomson 6080WA's but haven't put them through the paces yet.  Are you actually measuring the temperature with some device directly on the tube?

post #2222 of 3713

Does anyone know anything about the National Electronics and Hyvac 6SJ7GT?

 

 

They're nearly identical to the RCA 6SJ7WGT, except the top is a little different and the Hyvac an NE tubes don't have the little plastic piece shown above in the RCA tube.

 

 

I'm not sure what the difference is between WGT and GT.  The Hyvac box says licensed by RCA, but I'm not sure if that also means it was manufactured by RCA as well.  Hyvac tubes show 4810 on the base (Not sure if that means 1948 and week 10 or something else).  No manufacturer code on the bottom of either.  

 

post #2223 of 3713

WGT. W means it was made for military to their specs (better)

 

Do they sound the same? Are you liking the TS/RCA I sent? Do share your impressions here

post #2224 of 3713

OK, riddle of the day time....

 

I finally found some time to audition my new tubes....one puzzling thing with a pair of NOS Thomson-CSF tubes, on the tube it says further FSE-8012-FF but they're clearly labeled 6080WA, I'm auditioning them together wit a pair of RCA 5693.

 

Amp is the DV 337, headphones my HD-800, listening to some Scarlatti harpsichord music.  The Thomsons sound nice, articulate, refined...and virtually inaudible....I've got both volume settings turned to the max and the volume is akin to what some of my other 6080 (CIFTE, RCA...) produce with volume at 7 'o clock.  Unsurprisingly, when I plugged in my HE-6 I heard exactly...nothing.

 

Is there a problem with the tubes (but in that case it would be the same problem with both, seems a bit unlikely) or does this 6080 have some strange characteristics or....???  Optically they appear fine and if only volume output were be good I could imagine they'd sound fabulous.

post #2225 of 3713
Quote:
Originally Posted by Ultrainferno View Post
 

WGT. W means it was made for military to their specs (better)

 

Do they sound the same? Are you liking the TS/RCA I sent? Do share your impressions here

 

My RCA / Hyvac / National Electronics all sound the same.  Here is something very interesting I noticed on one of my National Electronics 6SJ7GT.  It clearly says TUNG-SOL and MADE IN USA on it.  I'm not sure if the tube heating up made this more clear, but I just noticed it.  

 

 

I get the whole re-branding thing, I just didn't realize some of these companies just scrapped off another companies logo and stuck their own on there.  

post #2226 of 3713

During the 2nd world war, Germany only wanted to use German made tubes. As a result the tube companies bought non German tubes and switched the labels. That way they got German tubes and the Nazis accepted to use them. True story

post #2227 of 3713
Quote:
Originally Posted by Ultrainferno View Post
 

During the 2nd world war, Germany only wanted to use German made tubes. As a result the tube companies bought non German tubes and switched the labels. That way they got German tubes and the Nazis accepted to use them. True story

 

I believe that, but this is a National Electronics (Made in USA) placed over a TUNG-SOL (Made in USA)

post #2228 of 3713

that was just to show you everyone did that all the time ;-)

post #2229 of 3713

I guess, I thought they would do a better job :)

post #2230 of 3713
A bit oftopic, but i used this adapter cable on my 337.. So maybe one of u guys are interested wink.gif

http://www.head-fi.org/t/713237/toxic-cables-black-widow-22awg-8wire-adaptercable-from-1-4-furutech-fp704-single-to-dual-3-pins-neutrik-xlr
post #2231 of 3713

 

 

Still running the battery bias mod and enjoying with HD650.

post #2232 of 3713

How does the 339 compare to, say, the LittleDot MKVI+? These two are my front runners for my HE-500 at the moment.

post #2233 of 3713
Quote:
Originally Posted by TooPoor View Post
 

How does the 339 compare to, say, the LittleDot MKVI+? These two are my front runners for my HE-500 at the moment.

 

Dying to hear more as I am in the exact same position too.

post #2234 of 3713

Pulled the trigger on the 339 directly from Yuking. Now the waiting begins... I hate waiting. Time to order some tubes. Thinking RCA 5693's to start.

post #2235 of 3713

Congratulations,  I own its predecessor (DV 337) and am confident you won't be disappointed, I've found those amps to perform better than some 2-3 times higher priced European (in name but mostly built in China) competitors.  Build quality is generally a lot better too.  The red 5693's are excellent rectifier tubes for sure, along with the RCA mesh plates 6sj7.  For the power tubes I've been rolling a lot of them and there are as many opinions as owners I guess but generally I prefer the 6AS7* bottles shaped ones over the 6080.  The ones generally considered 'best' sounding (5998, GEC 6AS7G, Graphite 6080 WB...) are very hard to find and mostly at insane price levels so it takes time, patience and lots of browsing to find them.  But the ubiquitous RCA 6AS7 sound very nice too.

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