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Old 24th September 2012, 08:31 PM   #1
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Default See Saw

I'm talking about balance.

Hello everyone, wanted to ask in this forum because this could be connected, no pun intended.

I have my sub, an IB, attached to my amp via a Behringer DEQ2496 and main amp like this.

RCA sub out to XLR centre to +, GND to -, and the shield floats
XLR to Behringer in.

Behringer XLR + to RCA Center pin and - to GND, Shield floats, to sub amp.

Additional 10 ohm resistor across the Center and GND of the RCA which connects to sub amp. Impedence match.

Its fine, a little buzz, but my main gripe is clicks and pops from light switches and the refrigerator, would a capacitor somewhere help?
I did have a active Clean Box, but it was worse, also have tried Transformer passive DI Box, but so far, the above is good. I posted in this Forum, because I feel its an Impedence miss match.
thanks

Mike
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Old 24th September 2012, 09:37 PM   #2
tvrgeek is offline tvrgeek  United States
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Mike,
Leave your feelings behind and let's take a look. The RCA signal should go to the XLR +, and the shield to the SHIELD of the XLR. Ground the - pin. That should fix you up. You should have found a diagram in the DEQ manual.

I might mention a power line filter but that subject is as big as a book, half goos science and half snake oil.
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Old 24th September 2012, 09:57 PM   #3
Did it Himself
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Pickup of pops and clicks is due to poor RF shielding. Connect as tvrgeek has explained, but only ground the XLR - pin at the input of the DEQ not the output. Otherwise you will be shorting the - output.
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Old 24th September 2012, 10:56 PM   #4
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Default Hummmmmmmmmmmm What?

I took the shield off at the rca to xlr at the phono end, it hummmed! Don't have shield at xlr to rca phono end!

Modified a pic, look!
Thanks, Mike
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File Type: jpg rca to xlr.jpg (48.8 KB, 55 views)
File Type: jpg xlr to rca.jpg (52.9 KB, 52 views)
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Old 25th September 2012, 12:13 PM   #5
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Doh mixed up me hot n shield!! Thank you
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