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  #41  
Old 2005-04-01, 21:54
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JerryP JerryP is offline
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Quote:
Originally Posted by xdislexicx
peavey lies alot... go to www.eurotubes.com and look at bob's thing about the fuckers at peavey saying certain mods cannot be done, yada yada...

eddie's real rig


Peavey's not lying. Bob's wrong and he knows it. He's been told about it by more than just Roger at Peavey. Bob is a SALESMAN, and a pretty good one at that.
Jerry
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  #42  
Old 2005-04-01, 21:56
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Quote:
Originally Posted by BLS
Buy from Doug, dont waste your time with Bob.


Doug is a straight shooter and he's got great stuff.
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  #43  
Old 2005-04-02, 11:42
xdislexicx xdislexicx is offline
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Quote:
Originally Posted by JerryP
Peavey's not lying. Bob's wrong and he knows it. He's been told about it by more than just Roger at Peavey. Bob is a SALESMAN, and a pretty good one at that.
Jerry

i don't know man, i'm no fancy tech, but... roger at peavey says "it can't be done"... and bob at eurotubes "has done it".
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  #44  
Old 2005-04-02, 21:00
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Quote:
Originally Posted by xdislexicx
i don't know man, i'm no fancy tech, but... roger at peavey says "it can't be done"... and bob at eurotubes "has done it".



Who are you gonna believe, the people that designed and built the amp or the guy trying to get your money and move tubes off his shelf? Bob doesn't fix, or design amps, he sells tubes.
I can back up what Roger has stated because I have seen it with my own eyes here in my shop. E34L's can cause damage in the XXX. I've also received several emails from guys that didn't listen to Peavey or me only to have their amps take a shit. It may not happen everytime but you'd be a complete fool to go against the manufacturers recomendation.

I've posted this on others forums, ask Bob to put his money where his mouth is. Put it in writing that he'll guarantee it won't hurt your amp and he'll pay to fix it if it does.
Jerry
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  #45  
Old 2005-04-02, 21:45
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The XXX cant handle E34L's because of the screen grid resistors, correct?
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  #46  
Old 2005-04-02, 23:46
xdislexicx xdislexicx is offline
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Quote:
Originally Posted by JerryP
Who are you gonna believe, the people that designed and built the amp or the guy trying to get your money and move tubes off his shelf? Bob doesn't fix, or design amps, he sells tubes.

well, that is a valid point... he is a tube salesman...

but...

you don't have to use his tubes to make it work, and nowhere did he say that(though he does mention that to his ears and many customers, his tubes are the bomb ).

i also beleive the people on forums i've asked about it... people that have had their amps modded for IQ's for long periods of time under heavy use, with no issues.

and bob says he's done the modifications to make amps like this... he's not saying, go ahead and throw in a pair of kt88's and a pair of el34's and you're set... he even told me straight up, if i were to do it, my amp would need extensive modding. which makes complete sense.

i'm not here to say bob's a shady salesman, i've had no issues with him, nor had any reason to doubt his credibility. i'm just saying, all personal issues aside... who is right?

Quote:
Originally Posted by JerryP
I can back up what Roger has stated because I have seen it with my own eyes here in my shop. E34L's can cause damage in the XXX. I've also received several emails from guys that didn't listen to Peavey or me only to have their amps take a shit. It may not happen everytime but you'd be a complete fool to go against the manufacturers recomendation.

el34's do damage to xxx's? that's kinda funny you say that... considering this:

Quote:
Originally Posted by the new musicians friend catalog sitting in front of me
The ULTIMATE tone machine. The all-tube XXX has a high-gain input, 3 footswitchable channels, and a poweramp that is convertible between 4 - 6l6GC's or EL34's
yada yada yada yada...


it's compatablity with el34's is also mentioned on the peavey website. they must be fools for going against their own recomendations..(just like i'm a fool for not using a boss adaptor for my ns-2 even though they told me to :P )

i'd also like to add that mesa has been doing this for quite some time... even the old 2/95's(one of my all time favorite poweramps) run two 6l6's and two el34's per side... thats the same concept of an integrated quad... or the mesa road king which runs 4 6l6's and two el34's..

if you and your kick assy-ness of wisdom in this subject could enlighten me (and everyone else that is unsure of who to beleive) as to exactly why an amp cannot be safely modded two run two different powertube types simultaneously(even though it is already being done with great success). that would help me out alot.

i'm not trying to be a complete "know it all" smart ass, i mean you're the 5150 guy... feel free to bust out on me and totally put me in my place. i'd just like to know "the facts".

Quote:
Originally Posted by JerryP
I've posted this on others forums, ask Bob to put his money where his mouth is. Put it in writing that he'll guarantee it won't hurt your amp and he'll pay to fix it if it does.
Jerry

well, i'm not going to have it done to my amp... so i don't know what good that would do me.

just playing the devils advocate.
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  #47  
Old 2005-04-02, 23:56
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Peavey has stated that el34's cause problems with XXX's, read their forums. http://forums.peavey.com/

The newer models have upgraded screen grid resistors I belive.
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  #48  
Old 2005-04-03, 01:18
xdislexicx xdislexicx is offline
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Quote:
Originally Posted by BLS
Peavey has stated that el34's cause problems with XXX's, read their forums. http://forums.peavey.com/

The newer models have upgraded screen grid resistors I belive.

nice to know i guess?

not everyone hangs around the peavey forums to know these things. most people will go to the website, or seller to read what they have to say.

my point is, jerryP said don't do what they tell you not to do... then he says el34's can't work right with xxx's. yet peavey themselves advertise the xxx as being compatible with el34's. seemed a bit strange eh?

a classic example of why i don't always trust the manufacturer. like with mesa's only being able to use mesa tubes.. my ass... mesa's tubes are pretty much just restamped tubes from other brands.. they're just picked to be in a certain range that the amps work with.

and if it's a simple solution of modifications. then i'm right, in saying bob is right... WITH MODIFICATIONS, it is possible.... besides, switching an amp from running 6l6's to running el34's isnt an integrated quad. and intergrated quad is running two different pairs of powertubes.

so far i'm still missing how it isnt possible... i mean, for someone to simply "SAY" it's not possible... and then another person "does it"... and yet someone still "says" it's not possible... where is the in depth explanation of "why it isnt possible" so we can call that fact?

i mean, jerry is like "the man" for 5150 shit, as well as other things... and he seems to be confident that he's right... so i'm sure he'd have no problems explaining exactly how it's impossible.
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  #49  
Old 2005-04-03, 11:55
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It's the E34L that causes problems, not the EL34. You can use EL34's without any problems. It is the screen grid resistors that fail but they can also take out flyback diodes when they fail.
The thing that bothers me about Bob is that he's been made aware of the problem with the E34L and he continues to tell people to use them. He even has his stupid explanation of why you can on his site. He's wrong. There's a guy over at Harmony Central that called Bob, was told the E34L's were OK and sounded great and then he had problems. He called Bob back and Bob started to backstep and double talk saying you might have a problem with them. In the end if I recall, his problem wasn't the screen grids but that's not the point. The point is Bob sold him the tubes by telling him they were the shit and then when the guy had a problem the story changed. Reminds me of a used car salesman.
The problem with the screen grid resistor is Peavey uses a 100 ohm resistor. This is too small. They saw amps coming back with failed resistors (so did I) using the E34L tubes and they told owners not to use the those tubes. Bob has a problem with Roger because Roger asked him to tone down his tube spamming on the Peavey forum. Bob has been banned from a few forums (according to his own website) for this.
Peavey as of 7 or 8 months ago started using 700 ohm screen grid resistors in the XXX/JSX amps so the E34L tubes are ok to use now.
Look at any schematic or read any tube book and you'll see that 470 ohm is the standard value for 6L6's and 1K is the standard value for EL34 type tubes. 1K is a long way off from 100 ohm. That's where the problem is with the E34L tubes. Bob is correct that the E34L is very close to a EL34, but he doesn't take into account that Peavey is already using a much smaller resistor than is commonly used. Many 5150's take out screen grid resistors using the 6L6's. 100 ohms is too small in my opinion. I've started upgrading them when I find them failed.
Jerry
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  #50  
Old 2005-04-03, 11:55
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OT: I'M GETTING A RIVERA BITCHES!!!

EDIT: Seems like he sold it to someone else...
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Last edited by Slabbefusk : 2005-04-03 at 12:32.
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  #51  
Old 2005-04-03, 14:39
xdislexicx xdislexicx is offline
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Quote:
Originally Posted by JerryP
It's the E34L that causes problems, not the EL34. You can use EL34's without any problems.

oh, my bad, i thought you said el34's...


Quote:
Originally Posted by JerryP
The thing that bothers me about Bob is that he's been made aware of the problem with the E34L and he continues to tell people to use them. He even has his stupid explanation of why you can on his site. He's wrong. There's a guy over at Harmony Central that called Bob, was told the E34L's were OK and sounded great and then he had problems. He called Bob back and Bob started to backstep and double talk saying you might have a problem with them. In the end if I recall, his problem wasn't the screen grids but that's not the point. The point is Bob sold him the tubes by telling him they were the shit and then when the guy had a problem the story changed. Reminds me of a used car salesman.

did the bro get bob to compensate him?


Quote:
Originally Posted by JerryP
Peavey as of 7 or 8 months ago started using 700 ohm screen grid resistors in the XXX/JSX amps so the E34L tubes are ok to use now.
Look at any schematic or read any tube book and you'll see that 470 ohm is the standard value for 6L6's and 1K is the standard value for EL34 type tubes. 1K is a long way off from 100 ohm. That's where the problem is with the E34L tubes. Bob is correct that the E34L is very close to a EL34, but he doesn't take into account that Peavey is already using a much smaller resistor than is commonly used. Many 5150's take out screen grid resistors using the 6L6's. 100 ohms is too small in my opinion. I've started upgrading them when I find them failed.
Jerry

well... thanks... that explains the E34L issue...

how about them IQ's though? still think they're impossible? if so, could i get an explaination as to why it's not possible to mod an amp to run two different types of powertubes?

just to remove any false information that has been spread.
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  #52  
Old 2005-04-03, 14:42
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I really want to try out an XXX head.

when i saw the band The End they had XXX's and they sounded pretty killer

when i see suffocation in may i think they will be using them, itll be interesting to see how well they suit them
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  #53  
Old 2005-04-03, 21:07
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Quote:
Originally Posted by xdislexicx
did the bro get bob to compensate him?

I don't think so, but I can't say for sure. He wasn't too impressed when the story changed.


how about them IQ's though? still think they're impossible? if so, could i get an explaination as to why it's not possible to mod an amp to run two different types of powertubes?

just to remove any false information that has been spread.



Here's my take on IQ's and I may be totally wrong because I'll admit, I'm no tube guru and I have limited knowledge of the actual workings of tubes. I'm not out to BS anyone and this is just my opinion which is also shared by a few other folks that do know, but I'm not naming names.

To get 2 different tube types to run correctly biased with one bias voltage I believe one or both or these tube types must be out of the normally accepted range for that particular tube type. If the bias voltage is changed and each set of sockets has it's own bias adjustment and voltage then I would say it's OK. When Mesa uses EL34's in the outside sockets of thier amps they have resistors on those tube sockets to compensate for the bias voltage requirement differences. The whole idea behind the IQ makes sense if the tubes were properly biased. People did this before Bob started pushing it but they did it with separte bias settings. I think he does have that on his 5150 he has on his site.
Jerry
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  #54  
Old 2005-04-04, 14:49
xdislexicx xdislexicx is offline
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Quote:
Originally Posted by JerryP
Here's my take on IQ's and I may be totally wrong because I'll admit, I'm no tube guru and I have limited knowledge of the actual workings of tubes. I'm not out to BS anyone and this is just my opinion which is also shared by a few other folks that do know, but I'm not naming names.

To get 2 different tube types to run correctly biased with one bias voltage I believe one or both or these tube types must be out of the normally accepted range for that particular tube type. If the bias voltage is changed and each set of sockets has it's own bias adjustment and voltage then I would say it's OK. When Mesa uses EL34's in the outside sockets of thier amps they have resistors on those tube sockets to compensate for the bias voltage requirement differences. The whole idea behind the IQ makes sense if the tubes were properly biased. People did this before Bob started pushing it but they did it with separte bias settings. I think he does have that on his 5150 he has on his site.
Jerry


okay... well, so then with the right modifications it is possible like bob is saying... with special stress on the modifications.

whether or not it sounds better or anything of that sort, is totally subjective.
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  #55  
Old 2005-04-04, 18:34
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You guys know too much you damn bitches, this is getting too complicated.
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  #56  
Old 2005-04-04, 22:35
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yeah but just think. the idea of IQ is really cool imo.
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  #57  
Old 2005-04-05, 15:02
xdislexicx xdislexicx is offline
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i don't know shit.
it's just with my basic knowlegde of how tube amps work, it made no sense to me why an amp with proper modifications couldnt run two types of powertubes.

i think jerry was more concerned about plugging in and playing with an IQ setup, and the whole e34l thing.
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  #58  
Old 2005-04-05, 17:57
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  #59  
Old 2005-04-05, 20:03
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yep... we just discussed the whole e34l thing...
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  #60  
Old 2008-11-06, 11:13
Alex01ESP Alex01ESP is offline
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Need Infoo

I need to know if there is a really huge difference between the 6505 and the 6505+ !

for the price difference, is it a good purchase to take the 6505+ or the difference isn't enough big ?? i play hardcore/metal/breakdown with my ESP LTD EC-500 with EMG 81 bridge pickup.
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