Strange RFI problem w/ DI and Amp

gsharp · 27th July 2005

When I record gtr and bass thru a DI into a pre all good.

When I split the signal off the DI and hit an amp with it I gets tons of RFI in the DI'd track. You can actually hear commercials and music etc..

Any ideas out there? Some goofy impedance thing?

zmix · 27th July 2005

Possibly a ground loop. Try lifting the DI or the amp.

tINY · 27th July 2005

It could be the amp. Do you have another amp to try?

-tINY

gsharp · 28th July 2005

It's happened twice with 2 different amps. The fact that an amp is involved is the only commonality. No problem with just the di. hmmm....

StDomingo · 28th July 2005

How are you "splitting the signal off" the d.i. ?

gsharp · 28th July 2005

Using a Countryman DI which has a parallel out. Gtr goes in a 1/4" in and comes out an XLR into the mic pre and out a 1/4" into the amp.

27th July 2005	#1
gsharp Lives for gear Joined: Mar 2003 Location: Los Angeles Posts: 722 Thread Starter	Strange RFI problem w/ DI and Amp When I record gtr and bass thru a DI into a pre all good. When I split the signal off the DI and hit an amp with it I gets tons of RFI in the DI'd track. You can actually hear commercials and music etc.. Any ideas out there? Some goofy impedance thing?

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27th July 2005	#2
zmix Lives for gear Joined: Jan 2005 Location: NY, NY Posts: 671	Possibly a ground loop. Try lifting the DI or the amp.

27th July 2005	#3
tINY Gear Guru Joined: Jul 2004 Location: Orygun Posts: 10,233	It could be the amp. Do you have another amp to try? -tINY

28th July 2005	#4
gsharp Lives for gear Joined: Mar 2003 Location: Los Angeles Posts: 722 Thread Starter	It's happened twice with 2 different amps. The fact that an amp is involved is the only commonality. No problem with just the di. hmmm....

28th July 2005	#5
StDomingo Gear interested Joined: Jul 2005 Location: London Posts: 4	How are you "splitting the signal off" the d.i. ?