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

» Film-Tech Forum ARCHIVE   » Operations   » Film Handlers' Forum   » DP500 Has Extraneous Low-freq. Rumble in L - C - R Channels

Author Topic: DP500 Has Extraneous Low-freq. Rumble in L - C - R Channels John McConnel Expert Film Handler Posts: 118 From: Okmulgee, OK USA Registered: Nov 2003 posted 05-09-2013 12:07 AM                        My CP500 has ztarted producing extraneous low-frequency sounds in the left, center, and right channels when digital sound is playing. It doesn't appear to be in the subwoofer channel, though. When the silent green rating strip on a trailei goes through, the rumble stops. What could be causing this?  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-09-2013 07:12 AM                     Audio watermarking...it gave DBOX fits too.  |  IP: Logged John McConnel Expert Film Handler Posts: 118 From: Okmulgee, OK USA Registered: Nov 2003 posted 05-09-2013 04:05 PM                        What can be done to stop it?  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 05-09-2013 04:56 PM                     I believe one can request a kdm that will not have the audio watermarking and the evils it brings.  |  IP: Logged John McConnel Expert Film Handler Posts: 118 From: Okmulgee, OK USA Registered: Nov 2003 posted 05-09-2013 11:15 PM                        What's a kdm?  |  IP: Logged Tony Bandiera Jr Film God Posts: 3067 From: Moreland Idaho Registered: Apr 2004 posted 05-09-2013 11:40 PM                     Security key/file for digital cinema. To Steve-o: Methinks the OP is running film, not a D-Cinema system. To John: What is the error rate displaying when you are getting this rumble? You may have a bad card in the CP500....I have a complete set of the ones to do Dolby digital film sound if you want to get the set for spares/testing, PM me for info.  |  IP: Logged John McConnel Expert Film Handler Posts: 118 From: Okmulgee, OK USA Registered: Nov 2003 posted 05-10-2013 03:37 PM                        We are using it on film. The error rate is 3 ta 4. Which card is likely to be causing ohe problem? I have two CP500s that had been discarded by a ciruit, and were given to me for parts to repalr a different problem. A Cat. 673, a Cat. 684, and the power supply had to be changed to fix the problem. It was after changing these items that the low-freq. rumble problem developed. I may need to borrow your cards.  |  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.