See Saw - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 24th September 2012, 08:31 PM   #1
diyAudio Member
Join Date: Jun 2012
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.

  Reply With Quote
Old 24th September 2012, 09:37 PM   #2
tvrgeek is offline tvrgeek  United States
diyAudio Member
Join Date: Dec 2009
Location: Md
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.
  Reply With Quote
Old 24th September 2012, 09:57 PM   #3
Did it Himself
diyAudio Member
richie00boy's Avatar
Join Date: Nov 2003
Location: Gloucestershire, England, UK
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.
__________________ my website for UK diy audio people - designs, PCBs, modules and more.
  Reply With Quote
Old 24th September 2012, 10:56 PM   #4
diyAudio Member
Join Date: Jun 2012
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
Attached Images
File Type: jpg rca to xlr.jpg (48.8 KB, 58 views)
File Type: jpg xlr to rca.jpg (52.9 KB, 55 views)
  Reply With Quote
Old 25th September 2012, 12:13 PM   #5
diyAudio Member
Join Date: Jun 2012
Doh mixed up me hot n shield!! Thank you
  Reply With Quote


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

New To Site? Need Help?

All times are GMT. The time now is 10:23 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2