Tremoverb 2x12 Combo HELP(Tubes??)

[adamg]

Hello,
I've owned my tremoverb 2x12 combo for a while now and perhaps not used it as much as i should've and lost a bit of interest in guitar. Anyway i am trying to play regularly and have a big question about my amp, hoping someone can help.

When i turn it up to a nice solid volume or even at fairly low volumes, if there's alot of bass in it or even perhaps not much and you do a bit of palm muting the amp has this type of rattle about it. it is on casters yes but is sitting on carpet and it doesn't move. when i put my head to the back of the amp it sounds like...you know when a light bulb dies or pops and you can shake it, it has that rattle to it. kind of like that.
i'm guessing it may need a re-tube but the thing is i've never heard one of these amps running in real life, other than the one i own.

how can i know what it is that needs replacing?

i Would take it to an amp specialist but the one we have in my area is a total jerk off and was rude to me when i called him with this question so as far as i'm concerned i'd rather not give him money since he is a rude man.
the rattle is very pingy and i'm not sure if anyone knows what i'm talking about but hopefully someone does.

adam

btw hi i'm new. hi

 

[jgventura]

Hey. Read your post and I think it'd be best if go read the FAQ at Bobs Eurotubes site. I'll include the link for ya. http://www.eurotubes.com/euro-i.htm#12.

 

[tele_jas]

The Eurotubes FAQ's is a good place to start!

I had T-verb 2x12 combo for a while and it had brand new tubes in it and I never got a whole lot of low end and when I'd run the bass up past 12:00 it would just sound flabby. I ended up just running the bass around 9:00 to 10:00 and got pretty used to it... this also carried over to the Road King combo, it has a little more low end but still not as much as a closed back cabinet would have attached to it. So some of it is just the open back of the 2x12 and some of it is that the rectifier combos don't have a lot of low end (except the Roadster) but when you mic it in a live situation the soundman can usually tell.

 

[adamg]

ok well i read that forum and pulled the back pannel off the tremoverb. pulled each tube out and layed them on a clean sheet and gently shook each one. none of them really sounded like they were rattling ALOT but one or two did have a very slight rattle...i'm not sure if that is how it's meant to be? or if they're meant to be like lightbulbs and have that slight rattle to them.

anyway, i put all the tubes back in and now it is sounding **** house. like Massive amounts of feedback when you hit a note it keeps ringing out and sounds ****. when you click it into the second channel with modern highgain and don't even tap a note it is going BRRRRRRRRRRR and the noise is very loud.
i know i have not 'ruined' the amp but just need to pinpoint what's up with it so i can fix it.
any ideas with my current situation now?

 

[Mr_You]

I can't recall, but I think you'll hear the rattle through the speaker when playing with a rattling tube, and the feedback, sounds like you've put a microphonic tube (bad tube) in a high gain position. Guessing. If you need new tubes look into Sovtek (good), Electro-Harmonix (better) or TungSol (best) or other New Sensor or JJ made tubes.

 

[adamg]

i see.

i took the amp to a specialist with years of experience so he should be able to fix it good.

peace (H)

 

[adamg]

ok, well i had a call from my amp tech this evening, he advised me every tube in the amp except for the 2 rectifier tubes were microphonic as all hell and just dead. he removed them and replaced them with what he said were high quality sovtek tubes and said it sounds good as new. he advised the cleans were crystal clear and the gain was massive.
he said to me the 2 rectifier tubes didn't need replacing since they were working but said 'they don't contribute much to the tone anyway'. is this true?
would i be best to buy 2 rectifier tubes and install them myself without his guidence?
picking up the amp on the weekend so will see how it sounds then. hopefully it is good.

 

[boogiemon]

Rectifier tubes are part of the conversion from AC to DC. Using them softens the attack of a note. i don't know if this qualifies as affecting the tone or not. Anyway, i'd say that as long as the volume levels between the tube & diode rectified modes is similar, save your $.

 

[adamg]

Rectifier tubes are part of the conversion from AC to DC. Using them softens the attack of a note. i don't know if this qualifies as affecting the tone or not. Anyway, i'd say that as long as the volume levels between the tube & diode rectified modes is similar, save your $.

ok thanks boogiemon for your reply. that makes sense i guess.
has anyone got any opinions on what he said or maybe able to give me any other advice?