my profile | my password | search | faq & rules | forum home

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » Sound system producing loud hum.

Author Topic: Sound system producing loud hum. Christian Volpi Master Film Handler Posts: 349 From: Arlington, NE Registered: Apr 2004 posted 11-04-2005 12:37 PM                        One of our locations is having problem with a loud hum coming from the subs. The setup is an Ultra Stereo processor with QSC amps, no digital. Any idea what might be causing this>  |  IP: Logged Monte L Fullmer Film God Posts: 8367 From: Nampa, Idaho, USA Registered: Nov 2004 posted 11-04-2005 02:07 PM                     are your subs self-powered? Is the hum without feature being shown or both? Did you switch wires from the amp that is driving the subs with another amp to see if it follows with the switching, or to go back to the USL processor (which kind of processor JS-200, for example..). If it's the processor, take off the face plate, turn the thing off, and remove and replace the cards for a card might be needed (take an eraser to clean the contacts) and reseat for compete contact. Give these areas a whirl. -Monte  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 11-04-2005 02:26 PM                     Is the um there in nonsync? if so then I suspect the processor or an amp try turing the processor off if it goes away then llo there if still there it is a grounding or a amp issue  |  IP: Logged Robert Harrison Expert Film Handler Posts: 239 From: Harwood Heights, Illinois, USA Registered: Jun 2005 posted 11-04-2005 09:21 PM                     It probably doesn't know the words to the song.  |  IP: Logged

All times are Central (GMT -6:00)

Printer-friendly view of this topic

Hop To: Select a Forum: Category: Operations -------------------- Digital Cinema Forum Film Handlers' Forum Large Format Forum Ground Level Feature Info, Trailer Attachments & REAL Credit Offsets Category: Community -------------------- Film-Yak Film Handlers' Movie Reviews The Afterlife Bob Maar's Joke-A-Thon Category: Classified -------------------- Equipment and Supplies Wanted/For Sale Help Wanted/Seeking Employment Category: System -------------------- Software Beta Testing Forum

The Film-Tech Forums are designed for various members related to the cinema industry to express their opinions, viewpoints and testimonials on various products, services and events based upon speculation, personal knowledge and factual information through use, therefore all views represented here allow no liability upon the publishers of this web site and the owners of said views assume no liability for any ill will resulting from these postings. The posts made here are for educational as well as entertainment purposes and as such anyone viewing this portion of the website must accept these views as statements of the author of that opinion and agrees to release the authors from any and all liability.