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» Film-Tech Forum   » Operations   » Digital Cinema Forum   » Intermenitent Buzz In JSD-80

Author Topic: Intermenitent Buzz In JSD-80
Adam Holland
Film Handler

Posts: 66
From: Oak Grove, LA
Registered: Nov 2007

 - posted 01-13-2014 05:01 AM      Profile for Adam Holland   Email Adam Holland   Send New Private Message       Edit/Delete Post 
I am currently having a slight issue with what I am assuming is my USL JSD-80. In my center channel and some bleed in the L & R channels I have a slight buzz that can be very annoying.

The issue is, it doesn't happen all the time, I had my tech over last week and it wouldn't happen while he was here, we changed the amp and crossovers on that channel and during Friday and Saturday night's shows it occurred again. Sunday afternoon it did not. We thought it may be coming from the sub. Turned Sub Amp off it was still there. I listened in my assisted listening devices and heard it as well so there for I am leaning toward the processor at this time.

If anyone has some advice it would be greatly appreciated. My tech is calling USL today as well.

Adam T. Holland
Historic Fiske Theatre
Oak Grove, La.

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Gordon McLeod
Film God

Posts: 9460
From: Toronto Ontario Canada
Registered: Jun 99

 - posted 01-13-2014 07:48 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
Is there any other things happening at the time the hum is present it may be power line induced

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12206
From: Annapolis, MD
Registered: Dec 1999

 - posted 01-13-2014 09:07 AM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
It can also be wiring induced...that is if proper grounding procedures were not followed. Even things like an unbalanced booth monitor could create an alternate path for the electrons to flow.

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