Audio clips?

[frosty55]

Does anyone know of any audio clips on the web, of a particular guitar amp?
I play a Les Paul through a newly acquired 1980 Marshall JMP mk.2 100w, and I get a very "woolly" sort of sound when playing low end chords. I dont get that "chunky" sound I thought the amp might have.
Are the output valves at fault?
It cant be the preamp valves, as theyre brand new.
Any help appreciated.

[JacksonRR]

Nothing worse than being frustrated at a new piece of gear.... Lot's of times I've had the same problem with an amp or two and then I realize I'm slamming the front end with way too much bass. Say a knob gets turned during transport or something and I don't notice. Any way you could thin the input some?

[Gibsonman63]

Try Youtube, there should be plenty of stuff there.

I have the same amp, built in 1979. I am playing classic rock and blues, so mine works great for that. A lot of things will affect the tone. Definitely power tubes, but also, the speaker and speaker cabinet, the filter caps among other things.

It won't be a super high-gain monster and you will have to crank it a bit to gets some balls out of it. Push it with a TS-9 and it should sing. Don't be afraid to dial in some mids, there is a lot of chunky chrunchiness there.

[frosty55]

I usually have the amps controls all set flat. Never really keen on boosting or cutting the EQ of guitar amps. The drivers in the cab are brand new. Celestion V30s.
Strings on the Les Paul are new also. Seen it mentioned earlier today on another site that its worth replacing all the "Electrolytic Caps" whatever they are!
If I contacted Marshall to buy some, I wouldnt know specifically what to get!
mmmmmmmm.......

[JacksonRR]

I'm not really familiar with the amp, does it have an effects loop? Maybe try isolating the sections if so. Do you have other guitars/cabinets/cables/tubes/configurations you can try out before you get too wacky? It's never fun to realize down the road that it was something real simple, like your guitar just sounds better in the low gain channel. Can you describe the sound problem any better than "wooly?" Electrolytic caps:https://www.egr.msu.edu/eceshop/Part...0capacitor.jpg and http://www.westfloridacomponents.com...0001/ae015.jpg. When one is bad, there's usually a bubble or a burst in it. That would be a good sign to replace a good bunch, especially in the power filter supply. Good luck. I hope you get some better info than what I can provide.