#1
Heya!

I just brought my jcm 800 home from my bands rehearsing place since we nowadays rehearse at our school.

Anyway, when I turned it on it sounded pretty crappy.
Sure, the volume was low, but this amp sounded like shit to my ears. I even played it through my other cab.
I don't know if it's because I want a more distorted sound than before, but this sounded harsh, very un even, like the tone didn't ring out in a smooth way, it kind of sounded like a tremolo effect was applied. I also feel like it's lost some gain, but I'm not sure about that. I'm boosting my signal with a bad monkey, but I'm using it as a clean boost.

The amp have been standing in a garage where the climate, so I can imagine the tubes have taken a beating from that.

I can fix a video where I play the amp through 2 different cabs for you guys to hear.

Any ideas?
#2
First thing to try is to remove all the tubes and plug them back in again.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band
#3
Quote by juliusxxrock
Heya!

I just brought my jcm 800 home from my bands rehearsing place since we nowadays rehearse at our school.

Anyway, when I turned it on it sounded pretty crappy.
Sure, the volume was low, but this amp sounded like shit to my ears. I even played it through my other cab.
I don't know if it's because I want a more distorted sound than before, but this sounded harsh, very un even, like the tone didn't ring out in a smooth way, it kind of sounded like a tremolo effect was applied. I also feel like it's lost some gain, but I'm not sure about that. I'm boosting my signal with a bad monkey, but I'm using it as a clean boost.

The amp have been standing in a garage where the climate, so I can imagine the tubes have taken a beating from that.

I can fix a video where I play the amp through 2 different cabs for you guys to hear.

Any ideas?


Aren't you the guy that uses a Valveking for cleans? Maybe I'm wrong, Also. Listen to Cathbard, but I'd try putting the tubes in and out again, but also changing up the preamp tubes for now.
Bass Gear:

Mensinger: Speesy
Fender Precision 1989 (CIJ Rosewood)
Fender Steve Harris (CIJ)
Lakland J Sonic 5
Epiphone Explorer
Maruszczyk (custom) Jake

Ashdown CTM 100
#4
Quote by Cathbard
First thing to try is to remove all the tubes and plug them back in again.



...with a healthy dose of not-lubricating contact cleaner on the pins I might add.

ESP LTD F-50 + Tonezone
Cort EVL-Z4 + X2N
Cort EVL-K47B

Marshall Valvestate 8100
Randall RG1503
Bugera 333
Peavey Rockmaster preamp

Line6 Pod X3
#5
Agreed. I'd hit it with electrical contact cleaner as well. But if you don't have any just pulling and replacing them will often do the trick even without it. When you pull them out it's usually pretty obvious if it needs cleaning. Don't use WD40 or anything like that, you want proper contact cleaner. Deoxit is a good one.
Gilchrist custom
Yamaha SBG500
Telecasters
Randall RM100 & RM20
Marshall JTM45 clone
Marshall JCM900 4102 (modded)
Marshall 18W clone
Fender 5F1 Champ clone
Atomic Amplifire
Marshall 1960A
Boss GT-100


Cathbard Amplification
My band