2-3 dB noise from patchbay?

Peter Z · 25th November 2009

I bought 2 XLR/XLR patchbays from ebay to have better access to the mic inputs of a TOFT ATB24.

I set maximum gain on my API3124. Plugging the mic input cable to the patchbay gives > 2dB more noise compared to the unplugged situation.

Can Patchbays be that noisy? Is there a way to improve the setup?

Peter

Rick Sutton · 25th November 2009

A patchbay shouldn't add any noise.....but, often the signal lines in a patchbay are exposed (the shield is stripped to allow connecting of the leads) so the signal is susceptible to outside interference from nearby sources. The patch cables themselves could also be the culprit. I'd look at what is near to the patchbay and see if it should be moved (either the bay or the external gear). Just a thought.

Peter Z · 26th November 2009

Thank you Rick!

Yes i think it's because the cables run unshielded for about 2" inside the Patchbay. Maybe i should something better.

25th November 2009	#1
Peter Z Gear nut Join Date: Dec 2004 Location: Vienna Posts: 79 Thread Starter	2-3 dB noise from patchbay? I bought 2 XLR/XLR patchbays from ebay to have better access to the mic inputs of a TOFT ATB24. I set maximum gain on my API3124. Plugging the mic input cable to the patchbay gives > 2dB more noise compared to the unplugged situation. Can Patchbays be that noisy? Is there a way to improve the setup? Peter

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25th November 2009	#2
Rick Sutton Lives for gear Join Date: Feb 2003 Location: Atascadero, CA Posts: 3,858	A patchbay shouldn't add any noise.....but, often the signal lines in a patchbay are exposed (the shield is stripped to allow connecting of the leads) so the signal is susceptible to outside interference from nearby sources. The patch cables themselves could also be the culprit. I'd look at what is near to the patchbay and see if it should be moved (either the bay or the external gear). Just a thought.

26th November 2009	#3
Peter Z Gear nut Join Date: Dec 2004 Location: Vienna Posts: 79 Thread Starter	Thank you Rick! Yes i think it's because the cables run unshielded for about 2" inside the Patchbay. Maybe i should something better.