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2007-04-22, 07:41
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Post-whore
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Join Date: Oct 2004
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JJ ECC83S tubes...
Hey guys just wanna make sure I'm getting the right tubes for my engl fireball:
http://i22.ebayimg.com/07/i/000/8d/af/e45d_1.JPG
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Description:
This auction is for a set of four (4) New JJ Tesla 12AX7 Pre-Amp Tubes or Valves as our friends in the UK call them. These tubes are immediately discernable from other 12AX7s. They have a construction that is similar to a frame-grid tube - similar to the Telefunken ECC803s. This construction makes them very rugged and reliable and the spiral filament makes tube hum non-existent.. This is one of the best new 12AX7s for any guitar amp. It is very musical - rich with great harmonics. An excellent tube in all Marshall amps in the three preamp positions. The JJ's break up much more smoothly, giving you a huge “sweet spot” and a smoother, singing tone. The ECC83S is great tube with a tight low end, a very natural and harmonically complex mid with VERY good definition and a sweet high end that is not brittle.
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Is this the ECC83S I want or is it the lower gain version? How do I tell?
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Originally Posted by far_beyond_sane
(Did you know In Flames had a 2005 album called "Come Clarity"? How prophetic. I think they're trying to tell us all their sperm are dead.)
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2007-04-22, 08:39
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Metal As Fuck!
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Join Date: Sep 2004
Location: LR AR
Posts: 2,680
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You'd figure there'd be some kind of distinguishing mark somewhere. They all look exactly the same...
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2007-04-22, 10:08
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Post-whore
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Join Date: Oct 2004
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Yeah. I know there's the ECC803S which someone said Eurotubes claimed it was lower gain than the ECC83S's, but I think there are 2 different ECC83's. There's one on this tube site claiming that the 83 works wonders in vintage amps cuz it's lower gain, but then some people here and Eurotubes claim the JJ ECC83S is the highest gain 12AX7 on the market? I don't know who to believe.
OK, so I found the same exact tube at tubedepot, because it has the same description(they make reference to Telefunken tubes): http://www.tubedepot.com/jj-ecc83.html
BUT the 803S's claim "If you want JJ tone in a high gain package, get the 803S's", and they have a heat dissipating fin that improves gain and efficiency, read here: http://www.tubedepot.com/jj-ecc803s.html
So I still don't believe 83S's are higher gain than the 803S's, especially since the 803S's are more expensive. 
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Originally Posted by far_beyond_sane
(Did you know In Flames had a 2005 album called "Come Clarity"? How prophetic. I think they're trying to tell us all their sperm are dead.)
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2007-04-23, 09:59
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Post-whore
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Join Date: Oct 2004
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Anyone? 
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Originally Posted by far_beyond_sane
(Did you know In Flames had a 2005 album called "Come Clarity"? How prophetic. I think they're trying to tell us all their sperm are dead.)
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2007-04-23, 14:32
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Supreme Metalhead
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Join Date: Mar 2006
Location: West Coast
Posts: 839
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Well the 803's are more expensive because of their design. They have extremely long plates which = a physically larger tube. I would still believe Bob Pletka about them being slightly lower gain than the regular 83's, they seemed to taim my old Powerball a bit.
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"So often our hands get caught up in ruts of muscle memory. 'Muscle memory' is an accurate term. We get used to doing certain things, without even being aware of them. This ultimately not only shapes and therefore limits our technique, it also shapes what we compose, what we write. We end up thinking still unknowingly trapped in that box." -Adam Nitti
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Originally Posted by the_bleeding
buy a stick of graphite (art stores) and rub it into your nut
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2007-04-23, 14:43
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Post-whore
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Join Date: Oct 2004
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Ok then, I just ordered 3 JJ ECC83's, for 27$ + 12$ shipping. Which totals to exactly 30 euros, pretty good considering JJ's here sell for 17 euros each. 
I bought 3 cuz I'm just swapping them into the gain stage positions to fix the radio issue, not the phase inverter position. If I ever have problems with the phase inverter I'll swap in one of the other stock tubes until they all die. Phase inverters don't add gain so they won't contribute to noise, but to be honest I'm not sure what they really do.
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Originally Posted by far_beyond_sane
(Did you know In Flames had a 2005 album called "Come Clarity"? How prophetic. I think they're trying to tell us all their sperm are dead.)
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2007-04-24, 08:35
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Senior Metalhead
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Join Date: Mar 2006
Location: Norway
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Well, you have two power tubes in your amp. The thing is, a signal can vary from (just an example) -10 volts to +10 volts. One of the tubes want everything from -10 to 0 volts, and the other want everything from 0 to 10 volts. Does that make sense? And the phase inverter "splits" the signal so that they get the signal they're supposed to get.
While we're at it: The reason you "bias" a tube is because below a set voltage (i don't know what voltage, probably around 1 volt or so.. and it could be current too) a tube doesn't let any signal pass, so you need to apply a constant voltage to the tube in order to make it conduct any signal below the threshold level. Imagine the tube not conducting anything below 1 volt of signal, you'd get distortion (a signal varies constantly in voltage)..
Anyway the PI does make somewhat of a difference.. not like the V1, but moreso than the tubes "in between".. go for a high-gain tube with a balanced sound with a little relaxed high-end to keep the harshness away from high-gain amps. JJ's are good for this. I really wouldn't go with a EH tube for this spot.
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2007-04-24, 09:48
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Post-whore
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Aha so that's what a PI is, in fact that's what I actually thought it was, I thought it had something to do with "balancing" the signal that goes into the poweramp in multiple gain stage amps. I won't worry bout the PI for now, like I said I'll keep swapping in the stock tubes in that position til they all die, then by the time that happens I'll do a full retube with really good expensive tubes.
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Originally Posted by far_beyond_sane
(Did you know In Flames had a 2005 album called "Come Clarity"? How prophetic. I think they're trying to tell us all their sperm are dead.)
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