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Author Topic: CP65 WA WA
Edward Jurich
Master Film Handler

Posts: 305
From: Las Vegas USA
Registered: Jul 2003


 - posted 05-07-2004 08:37 PM      Profile for Edward Jurich   Email Edward Jurich   Send New Private Message       Edit/Delete Post 
OK, I can't figure this one out. Dolby CP65, on loud passages like say during rain storm or music, the sound has a WA WA pumping effect. Otherwise it sounds fine. There have been times when it doesn't do it but most of the time it does. It's not the input level of the CP65, I've tried different input levels from low to high. I originally thought it was the pickup but it does it on 2 different projectors.

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 05-07-2004 08:55 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
did you set your optical gain in 01 mono SR in particlular is very level sensitive

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Edward Jurich
Master Film Handler

Posts: 305
From: Las Vegas USA
Registered: Jul 2003


 - posted 05-07-2004 10:24 PM      Profile for Edward Jurich   Email Edward Jurich   Send New Private Message       Edit/Delete Post 
Levels were set in SR. It's possible that the few times it has not done this was on a print with lower or higher track levels. But then if it's that level sensitive there would always be some print that would do it.

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 05-07-2004 11:05 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
And to set the level you did use a Dolby Tone loop...not pink noise...right? If the level is properly set with tone then there may be a processor problem or other system deficiencies present. Also be sure its not the power amps and that you don't have any ground loop present in the system.

Mark

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 05-08-2004 09:04 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
A chain level must be done in MONO 01

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