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Post subject: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 11:57 am
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hello, when I went to order some Tung Sol 6v6's for my Fender DRRI and PRRI , I noticed that there are three different ratings available, early, late and regular breakup. Any suggestions on which would fit these amps best? I think I read that the later the breakup the higher the voltage handling.


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 12:49 pm
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Tung Sol from Groove tube / Fender ?

Or which dealer , web address please.


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 4:34 pm
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stratele52 wrote:
Tung Sol from Groove tube / Fender ?

Or which dealer , web address please.


musiciansfriend, click the style button for the three ratings.

http://www.musiciansfriend.com/accessor ... ower-tubes


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 4:50 pm
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Higher rating prolly passes more current than the lower ratings. I had some issues with the first set of TSRI 6V6GTs. Red plating after use and early failure. I never went back to them.

Ppl do claim that the QA has gotten better. With the primary problem being grid alignment.


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 6:19 pm
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BMW2002Ti wrote:
Higher rating prolly passes more current than the lower ratings. I had some issues with the first set of TSRI 6V6GTs. Red plating after use and early failure. I never went back to them.

Ppl do claim that the QA has gotten better. With the primary problem being grid alignment.


the only reason I figured I'd try them is all the raves about them in DRRI's. I guess the DRRI's exceed the voltage rating on these so maybe they're not the right choice. I've heard that jj's can handle the voltage but sound more like 6L6's. Not what I really want from a DR.


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 6:44 pm
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Thought about the TAD 6V6GT? I know it's made in China (Shuguang manufacture) --- but TAD does do a pretty good job of burning in & ferreting out poor stock.

BTW--- plate voltage alone won't kill a tube. It's the idle watts of dissipation (or both the plate voltage & the idle current). High plate voltage is applied onto the plates to place the tube into a region of its curve that give it the most swing. More dynamics. So, at higher plate volts you need a tube that can handle momentary high current, during transients and bass runs --- and not overload and distort.

If that makes any sense. :lol:

http://www.thetubestore.com/Tubes/6V6-T ... -6V6GT-STR


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 7:04 pm
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BMW2002Ti wrote:
Thought about the TAD 6V6GT? I know it's made in China (Shuguang manufacture) --- but TAD does do a pretty good job of burning in & ferreting out poor stock.

BTW--- plate voltage alone won't kill a tube. It's the idle watts of dissipation (or both the plate voltage & the idle current). High plate voltage is applied onto the plates to place the tube into a region of its curve that give it the most swing. More dynamics. So, at higher plate volts you need a tube that can handle momentary high current, during transients and bass runs --- and not overload and distort.

If that makes any sense. :lol:

http://www.thetubestore.com/Tubes/6V6-T ... -6V6GT-STR


I like their el84's.
Were the TS ones that failed on you in a DRRI? Just wondering if they'll work in one. Musician Friend owes me a deal on 6v6's and their brands are limited. I suppose I could try jj's. They might help tighten up my PRRI if nothing else. Just figured I'd try the raved about TSRI's in either amp since they carry that brand.


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 7:15 pm
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I had TS 6v6's in the Excelsior I had for a couple of weeks. I had the late break-up ones. I thought they made a huge difference in tone. Had a JJ 5751 in V1. Lowered output ok with acceptable tone and better than the stock. Best tone was a GT I had pulled out of my SCX2, but the gain was more than I wanted. Would have used the GT if I had gigged with it.

Mentioned the preamp tubes because they figured into tone as well. TS were strong and musical.

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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 8:17 pm
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modwiz wrote:
I had TS 6v6's in the Excelsior I had for a couple of weeks. I had the late break-up ones. I thought they made a huge difference in tone. Had a JJ 5751 in V1. Lowered output ok with acceptable tone and better than the stock. Best tone was a GT I had pulled out of my SCX2, but the gain was more than I wanted. Would have used the GT if I had gigged with it.

Mentioned the preamp tubes because they figured into tone as well. TS were strong and musical.


I have a few NOS 5751 GE Blackplate tripple mica's and a gray one too that I've yet to try in either amp. Figured I'd do that at the same time as the pwr tubes.


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 9:05 pm
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buford wrote:
BMW2002Ti wrote:
Higher rating prolly passes more current than the lower ratings. I had some issues with the first set of TSRI 6V6GTs. Red plating after use and early failure. I never went back to them.

Ppl do claim that the QA has gotten better. With the primary problem being grid alignment.


the only reason I figured I'd try them is all the raves about them in DRRI's. I guess the DRRI's exceed the voltage rating on these so maybe they're not the right choice. I've heard that jj's can handle the voltage but sound more like 6L6's. Not what I really want from a DR.


I really like the JJ's. There's just more there ... there. Wait ...... WHAT?!?! I don't know, beefier or something. And I think the headroom seems high too.

But one great big caveat on installing those Tung Sol 6v6. I installed a pair for a test drive, and really did like the tone. A little more clear than the JJ, and a little less headroom, but maybe too much on the brittle side. However if you put them in, especially after having the JJ's in the DRRI, you just gotta bias the amp. Goes without saying, I guess; but I stuck them in and was messing around for just a few minutes, and I swear I coulda thrown a roast and some vegetables in the back of the DRRI and had dinner in an hour.


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Wed Aug 07, 2013 10:47 pm
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WhatsThatSmell wrote:
buford wrote:
BMW2002Ti wrote:
Higher rating prolly passes more current than the lower ratings. I had some issues with the first set of TSRI 6V6GTs. Red plating after use and early failure. I never went back to them.

Ppl do claim that the QA has gotten better. With the primary problem being grid alignment.


the only reason I figured I'd try them is all the raves about them in DRRI's. I guess the DRRI's exceed the voltage rating on these so maybe they're not the right choice. I've heard that jj's can handle the voltage but sound more like 6L6's. Not what I really want from a DR.


I really like the JJ's. There's just more there ... there. Wait ...... WHAT?!?! I don't know, beefier or something. And I think the headroom seems high too.

But one great big caveat on installing those Tung Sol 6v6. I installed a pair for a test drive, and really did like the tone. A little more clear than the JJ, and a little less headroom, but maybe too much on the brittle side. However if you put them in, especially after having the JJ's in the DRRI, you just gotta bias the amp. Goes without saying, I guess; but I stuck them in and was messing around for just a few minutes, and I swear I coulda thrown a roast and some vegetables in the back of the DRRI and had dinner in an hour.


I can't quite remember but with jjel84's the current was way different than the stock tubes. I think they're rated at more watts than the stock tubes. My el84 amps are a pain to adjust the bias too.

My new PRRI and DRRI power trannys get real toasty after a while so I see what you mean about yours. As far as the brittle TS's, I found that as well with their 12ax7's.

Not sure what to do about my dilemma. I'd hate to fry a perfectly good amp with underrated tubes. I like using a compressor with these amps and that adds a lot of punch which might translate into the current spikes that BMW2002Ti referred to. I do like the fact that TAD's have nice high voltage ratings. For now, if there's a chance of the TS's cooking the amp, then I might go the safer route with the JJ's to help tighten things up a little. Especially the PRRI.


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Thu Aug 08, 2013 1:33 am
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buford,

These "new" TungSol have nothing in common with the real thing the original old TS . It is just the name buy by a Russian tube builder. But you all know that .


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Thu Aug 08, 2013 1:52 am
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Just for sake of completeness:

5F1 Champ DIY with Raytheon TMBP 5751, TS (USA) 6V6GT, and TS 5Y3GT [left to right].

:mrgreen:

Image


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Post subject: Re: Tung Sol 6v6 rating?
Posted: Thu Aug 08, 2013 2:24 am
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BMW2002Ti wrote:
Higher rating prolly passes more current than the lower ratings...


Yes, the first number, such as 27 is the Plate current, and the number such as 5.7 is the transconductance. For GT tubes, the higher the rating, ie 1 to 10, the higher the idle current.

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Post subject: Re: Tung Sol 6v6 rating?
Posted: Thu Aug 08, 2013 5:03 am
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Hi Had a pair of TS 6v6 in my DRRI amp for two years Have to say they do have nice tone.But after to years they lost there punch. So of to see me mate the tek to re tube my amp..As my mate was checking the amps bias he gave the one of the tubes a bump and then the amp red plated and blue the grind resistors.No fun there.But changed them over and fitted some aussie made radoitron 6v6gt tubes.and now sounds even better.so all i can say is there are a very good tube but dont last that long..all the best on your quest...


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