Tubeswitch ...

**GAR** · 02-09-2005, 06:15 PM

You need to stop thinking I have photographic memory of shitty chassis that I fucking hate, and that have sucky worthless proprietary "R" switches I know nothing about.

I can guess.
You wanna play guessing games? Post a pic and I'll take a stab at it after I pull out of your girlfreind and have a look-see.

I AM assuming you're talking about EL34 tubes. You don't specify - you could be mentioning the "R" string tied to the Tonka truck I just shoved up your ass with no lube and in that case - "R" would mean "removal ring".

**Eyes of the Night** · 02-09-2005, 06:20 PM

Dude, lmfao ... yes the EL34's ... there's an R at the end of the "EL34" ... lmfao ... is that the normal labeling or is it something different that I don't want to use with those 12ax's? ...

Wont have it ti'll 5 ... cause you can damage shit inside right if you mix the wrong tubes? ...

**Eyes of the Night** · 02-09-2005, 06:57 PM

I guess it was a stoopid question ...

**GAR** · 02-09-2005, 07:08 PM

The only stupid questions are the ones that begin as assumptions.

If you post a pics we can see this unknown "R" in, you'll get a qualified opinion. Otherwise, we're apt to telling you it's the Retard Switch or something..

**BrownSound1** · 02-09-2005, 09:04 PM

Got this off of the Groove Tubes site.

Power Tube Comparison Chart (All Tubes #5)
Tube Type Bias Comments
GT-6V6C -46vdc Warm, strong, nice edge.
GT-6V6R -48vdc Smooth, warm, slightly dark.
GT-KT66HP -61.9vdc GT design. Exact NOS spec, warm bouncy tone, great highs.
GT-KT66C -61.2vdc High power, warm tone balance.
GT-6L6GE -61.0vdc Exact GE design using their original tools. Strong, articulate musical.
GT-6L6R(B) -56.0vdc Slightly aggressive, harder edge yet still warm.
GT-6L6R2 -56.0vdc New Russian design, strong, hard tone.
GT-6L6C -54.3vdc Crisp, solid, ideal for Country Rock.
GT-6L6S -49.7vdc GT design, highest power 6L6, strong bass and highs.
GT-E34LS -50.5vdc GT design, most powerful EL34, big bass, crunchy top.
GT-EL34C -47.3vdc Looser, crunchy and slightly less bass.
GT-EL34R-49.9vdc Linear response with harder edge.
GT-EL34R2 -49.9vdc Linear response with harder edge.
GT-6550C -68.2vdc Soft distortion, round and warm.
GT-6550R -66.0vdc New 6550A copy, less power shorter life.
GT-KT88SV -69.1vdc GT design, replicates Genelex

**Denny** · 02-09-2005, 09:24 PM

Originally posted by Eyes
Dude, lmfao ... yes the EL34's ... there's an R at the end of the "EL34" ... lmfao ... is that the normal labeling or is it something different that I don't want to use with those 12ax's? ...

Wont have it ti'll 5 ... cause you can damage shit inside right if you mix the wrong tubes? ...

EL34 tubes are ok.........5881's are WAY better, IMO.

**Eyes of the Night** · 02-10-2005, 05:03 AM

great find there Brown ... tried out those new tubes tonight along with the concept of turning up the posat and turning down the gain ... got the levels around 6 post and 4 gain I think ... pretty beefy and lost all the mids that I wanted to lose which where about all ... hate MIDS ... for some reason? ...

Dude instead of raising the chassy level had to input a higher value for something and added 10 volts ... great for now! Nothing but fun ...

**Eyes of the Night** · 02-10-2005, 05:57 AM

(GT-EL34R-49.9vdc Linear response with harder edge.)

There's this badass swooshing sound the tubes make now whm in true bypass ... like a phaser effect ... badass ... is this due to the "linear response"? ... isn't linear like a wavelength type thing? ...

**BrownSound1** · 02-10-2005, 06:10 PM

Linear response has nothing to do with whatever you're hearing.

**Panamark** · 02-11-2005, 02:40 AM

Eyes, buy a Marshall, for fooks sake !

**Eyes of the Night** · 02-12-2005, 01:44 AM

I play through a Marshall 160 lead cab does that count!?

...

**Panamark** · 02-12-2005, 04:26 AM

You are are halfway there.

Get a JCM800 head.. Then enjoy the tone and stop fucking
with tubes

**GAR** · 02-12-2005, 02:59 PM

Does he mean "1960" Lead Series cab?

Find a TV/Radio tech shop or tube jockey locally and PAY THE MAN WHAT HE WANTS to bias the amp!

- you won't fuck up your new tubes
- they'll sound better with the proper supply
- you won't fuck up your output transformer

**GAR** · 02-12-2005, 03:04 PM

One option rarely discussed here, regards to playing "tube jockey" is the fact that if you are just sampling different types of tubes in a 100 watt chassis.. you can actually get by with only 2 power tubes.

Most guys aren't aware of this, but a quad of output tubes function as two pairs of a push-pull circuit..

One tube "pushes" the top form of the sinewave, while the other "pulls" the bottom form, to complete a full wave cycle top and bottom. Two pairs of tubes make a quad, so you can remove two - in Marshalls you can use either the outer 2 or inner 2 pairs.

I run my 1980 JMP with 2 6CA7's at home but if I was to practice I would throw in my quad of EL34's.

Personally I can't wait to try the NEW GROOVE TUBES' 6CA7 when I can afford to - Eyes you could plug in 6CA7's as they're pin-for-pin compatible with EL34's. My recommendation.

If you can't afford a quad, try a pair like the way I mentioned and you might really really like 'em.