Finally a tube amp..!

M

Mewmender

New member
Alright folks I finally gave in and bought a used Peavey Classic 30.
Its my first tube amp so here are some questions

-How do I know when I should replace the tubes ?
-Does the classic 30 require any biasing?
I heard from some owners that I do not have to rebias the classic 30 , just pop in the tubes

Are there any other important information about tube amps I should know about?

Thanks :wave:
 
Re: Finally a tube amp..!

Congrats, bro. That's an awesome sounding amp. I almost bought a used one myself, but at the time I thought I needed a new amp, so I got the Blues Jr. There were a lot of good points for both. That Classic 30 is a great amp.

When to change the tubes? You'll know. It'll start sounding like crap...or worse.

I'm not familiar with the biasing on it. I looked it over when I was considering buying it, but I didn't know anything about tube amps at the time, either, so that wasn't something I was concerned with. I'm sure there's some people on here that know, though.
 
Re: Finally a tube amp..!

You can always do the 'tap test' to see if any tubes are microphonic, turn the amp on, w/o hooking up a cord and guitar, and lightly tap on each tube with a pencil,(the eraser end) and listen to see if any of the tapping is coming thru the speakers. IF so you have a microphonic tube, which doesn't always mean the tube is bad, but it is not in spec. Unless I'm wrong, I thought I heard that the Peaveys were auto biasing, but don't take my word for that.
Pre amp tubes do not have to be biased. only when you replace power tubes.
 
Re: Finally a tube amp..!

marvar said:
I thought I heard that the Peaveys were auto biasing, but don't take my word for that.
Click to expand...
Im pretty sure I heard that too somewhere, is anyone sure of this??
:smack:
 
Re: Finally a tube amp..!

:offtopic:, but how do I actually bias my map for new Poweramp tubes? Do Marshall DSLs have to be re-biasedon tube change?

thanks
 
Re: Finally a tube amp..!

If you bought the Classic 30 used, head over to www.eurotubes.com and pick out a re-tube kit that suits your style. With a used amp, you have no idea of how old the tubes are. The Classic 30 is a fixed bias, so just plug and play. And enjoy! The Classic 30 is a great little amp.
 
Re: Finally a tube amp..!

Kommerzbassist said:
:offtopic:, but how do I actually bias my map for new Poweramp tubes? Do Marshall DSLs have to be re-biasedon tube change?

thanks
Click to expand...
Yes marshall dsls need to be rebiased at tube change. I suggest you just bring it to tech to rebias it. If you want to learn how to do you need to get a book about not sure which one is the good one and you need to be very safe, touching stuff in the amp can kill you. But I would just bring to a tech just to be safe.
 
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