Deledhel
Registered User
Join date: Dec 2011
633 IQ
#1
So... I finally gave in. I bought an ISP Decimator G-string pedal (expecting it tomorrow). Band started getting more active lately, and although I am satisfied from (the absence of) noise/static hiss at home levels, its a whole different can of worms at gig levels. However, while toying around I realized that the noise levels varied.

I am using a Fuel Tank chameleon. The easiest way to power-up my pedals is to daisy-chain every 9volter and give one 12v outlet from the Chameleon to my preamp. It seems this way was also the most noisy.

If I "split" the pedals across all outputs the noise lessens.

If I use the original power supply for the preamp it lessens even more.

Does this mean that my power supply is faulty?!?
Is this the kind of noise that will get "decimated" by the ISP?
Roc8995
Moderator
Join date: Nov 2005
2,050 IQ
#2
No, that means the power supply isn't faulty. The whole reason they give you all those outputs (instead of just one and a daisy chain) is because they're isolated. When you daisy chain, you're stringing all those pedals together into the same power output, and (as you heard) they interact a bit and make noise. Isolated outputs keep that interaction from happening.

Using the dedicated preamp supply isolates even further, so again you get less noise.

This is all normal stuff, and exactly the kind of thing the Decimator is supposed to handle.
Deledhel
Registered User
Join date: Dec 2011
633 IQ
#3
Thanks for your answer

I just plugged it in my pedalboard and I can say I am satisfied. However I am not sure about the order. Right now my guitar goes in the tuner->Decimator guitar-in, Decimator guitar-out goes to my drive pedals (which are in front of my preamp). My preamp's effect loop send-> DEC-in -> DEC-out goes to all "loopy" effects (delays,equalizer,modulation etc..) which then go to effect loop return.

Is this the correct order? Cause the instructions said it must be last in the chain?!?
Roc8995
Moderator
Join date: Nov 2005
2,050 IQ
#4
So why did you put it first in the chain?

Last means after everything, so...not where you have it. Either after the drive pedals or after everything in the effects loop before it goes to the return. But definitely not in front of everything. I can't imagine it's doing a lot there.
Deledhel
Registered User
Join date: Dec 2011
633 IQ
#5


Now I got really confused. I thought you plug your guitar in the guitar-in so it tracks, and then decide if you place the DEC-input in the loop or in-front of the amp. I placed it first in the loop because my "loopy" effects aren't that noisy and I've read that the Decimator can cut some low volume stuff like delay tails and stuff if you put it last.

Moreover, it WORKS! I swear honest If it doesn't filter anything than the guitar signal do you think that all that hiss is cause of my guitar?!!
Prime2515102
Registered User
Join date: Dec 2010
377 IQ
#7
Quote by Deledhel
Thanks for your answer

I just plugged it in my pedalboard and I can say I am satisfied. However I am not sure about the order. Right now my guitar goes in the tuner->Decimator guitar-in, Decimator guitar-out goes to my drive pedals (which are in front of my preamp). My preamp's effect loop send-> DEC-in -> DEC-out goes to all "loopy" effects (delays,equalizer,modulation etc..) which then go to effect loop return.

Is this the correct order? Cause the instructions said it must be last in the chain?!?

Shouldn't it be last then? loop send->effects->dec-in->dec-out to loop return (so it cuts out any noise from the effects)?
"Practice doesn't make perfect. Perfect practice makes perfect." -some dude
acosta11
Banned
Join date: Feb 2013
10 IQ
#8
Using the dedicated preamp supply isolates even further, so again you get less noise.