#1
I have a Marshall JCM2000 DSL 50 and whenever i plug effects pedals through the effects loop it makes the amp very noise, much more noisey than infront of the amp, and doesnt make a difference if you press the effects loop button in or out. Anybody know what is happening or what i can do? New pre amp valves needed due to age, and there worn out or something else?

Help!!please!

James
Last edited by JamesGale at Sep 17, 2008,
#2
What kind of pedals....? OD pedals and such are supposed to be infront of amp!

Check your cables and are there stuff that can interfere with the effect or anything around? Like some computer monitors or even some lamps.
Guitars:
-Schecter C-7 Hellraiser
-Ibanez MTM2
Amplifiers and Cabinets:
-Peavey StudioPro
-Randall RH50T Head
-Behringer 4x12 cab
Pedals:
-Ibanez WD-7 Wah
-Boss SD-1
-MXR 10 Band Equalizer

7-String guitars are badass!
#3
my delay pedal only, i no wen i put it infront of the amp then its not so noisey, but i no that it will interfer if i have too many pedals
#4
what pedal is it? like what delay model

07 Fender American Deluxe Strat
07 Fender Custom Telecaster
09 Seymour Duncan Pickup Booster
09 Fulltone OCD V.4
10 Ibanez WH-10 V.2
09 Splawn SuperStock
10 Jet City JCA-20
97 Fender Hot Rod Deluxe

Yeh the SICK! bit sounds a bit stupid.

#6
Okay this is the checklist for you.

1.Your cables(most probably)
2.The adapter
3.the pedal
4.the amp
Guitars:
-Schecter C-7 Hellraiser
-Ibanez MTM2
Amplifiers and Cabinets:
-Peavey StudioPro
-Randall RH50T Head
-Behringer 4x12 cab
Pedals:
-Ibanez WD-7 Wah
-Boss SD-1
-MXR 10 Band Equalizer

7-String guitars are badass!
#7
if you said youre tubes are old, they could be going microphonic. I am not 100% sure what that entails except that they are basically worn out and are picking up other frequencies from other electrical products....or something along those lines....
Gibson Les Paul Studio
Highway One Telecaster
Dean Evo
Mesa F-50
Laney GH50L
Vox AC30 C2
Ampeg V2
pedals
#8
yer that might be it, coz i think i heard stuff like that sometimes. How do i replace and stuff
#10
Quote by phenom1991
What kind of pedals....? OD pedals and such are supposed to be infront of amp!

Check your cables and are there stuff that can interfere with the effect or anything around? Like some computer monitors or even some lamps.

+1
Not everything goes in the EL
#12
^Okay.
New checklist:
1. Turn your amp on, and with it on fairly low volume, tap your preamp tubes lightly with a pencil. If that sound comes through the speaker, your tubes are microphonic and they need replacin'.

2. If they aren't microphonic, buy a noise gate.
I'm putting my GAS on hold
for a couple months in order to pimp my ride.


Don't judge me.
#13
Seriously guys...it could well be the cables.

Try different cables. If not...its probably the tubes.
Guitars:
-Schecter C-7 Hellraiser
-Ibanez MTM2
Amplifiers and Cabinets:
-Peavey StudioPro
-Randall RH50T Head
-Behringer 4x12 cab
Pedals:
-Ibanez WD-7 Wah
-Boss SD-1
-MXR 10 Band Equalizer

7-String guitars are badass!
#17
Okay found out tubes arent the problem, and neither are cables both work fine, together wid no effects. Im wondering what it can be, i got a isp deciminator and that seems to be making it worse wen its turned off? Help?
#18
It sounds like the pedal's adapter. One of mine does a similar thing.
“In my anguish I cried to the LORD, and he answered by setting me free. The LORD is with me; I will not be afraid. What can man do to me?”
#19
So your amp doesn't make that sound when there's nothing in the loop?
I'm putting my GAS on hold
for a couple months in order to pimp my ride.


Don't judge me.
#20
i guess it could be adapter because it was only 30 quid, but the isp is making it worse and thats infront of the amp not in the loop. and no my amp doesnt make that sound with nothing in the loop. but wen the isp is off but infront of the amp connected it makes a weird buzzing noise.
#23
The ISP goes behind whatever is making the noise. If it's in your effects loop, put it there. Try putting all your effects in front of the amp. If they still make noise, then it's probably dirty power.
I'm putting my GAS on hold
for a couple months in order to pimp my ride.


Don't judge me.
#24
ive done that and theres still the noise, it seems to me as when i add the isp its making more sound, but theres still a more silent sound when i take it out aswell. Maybe it just is the pedal power adaptor? Any other ideas?
#25
Yeah, it's probably the power adapters of your pedals. What are they plugged into?
I'm putting my GAS on hold
for a couple months in order to pimp my ride.


Don't judge me.
#27
And what's that plugged into?
I'm putting my GAS on hold
for a couple months in order to pimp my ride.


Don't judge me.
#29
Try a power conditioner or a power strip.
I'm putting my GAS on hold
for a couple months in order to pimp my ride.


Don't judge me.
#31
Your local GC. or other music store. look online. monster and furman make particularly good ones.
I'm putting my GAS on hold
for a couple months in order to pimp my ride.


Don't judge me.
#32
If he uses same Pedal Power for BOTH FX Loop and in-front-of-amp effects then it will create a ground loop or whatever. You can't have both in the same chain.
Guitars:
-Schecter C-7 Hellraiser
-Ibanez MTM2
Amplifiers and Cabinets:
-Peavey StudioPro
-Randall RH50T Head
-Behringer 4x12 cab
Pedals:
-Ibanez WD-7 Wah
-Boss SD-1
-MXR 10 Band Equalizer

7-String guitars are badass!