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Author Topic: CP500 levels increase suddenly Alexander Alves Film Handler Posts: 33 From: Diwanman, Vasai, India Registered: May 2003 posted 08-10-2005 06:44 AM                     We have a CP500 which in the middle of a show will suddenly go loud. The volume control display remains the same but the bargraph shows the corresponding increase in levels. This conditions remains for maybe 5 or ten minutes and then the processor will return to normal.  |  IP: Logged Dieter Depypere Master Film Handler Posts: 343 From: Deutsch-Wagram, Lower Austria, Austria Registered: May 2005 posted 08-10-2005 07:48 AM                     Does this happen on one print or more prints? And does this happen at a specific part of the show or just randomly?  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 08-10-2005 08:09 AM                     Unless the actual output level changes (as in it gets louder in the theatre) then I wouldn't pay it too much heed. Those bargraphs on the CP500 are flaky to say the least. Try leaving it with no input signal of any kind, watch for long enough you'll see the bargraphs flick up and down when there is no output at all, usually the subwoofer mostly.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 08-10-2005 08:16 AM                     Alex, I would have your(dolby capable) tech upgrade your 500's O.S. software to 1.65 asap. With 1.65 I've never noticed any flaky bar graphs or any other anolomies at all. Its also VERY stable and the 500 won't dump is settings. Mark  |  IP: Logged Ferdinando Innocenti Film Handler Posts: 79 From: Genova / Italy Registered: Jun 2004 posted 08-11-2005 03:10 AM                     I happened a lot of time before conditioning my booth. Ecxessive heat make the Cp500 increase volume, and it was impossible to lower it.  |  IP: Logged Alexander Alves Film Handler Posts: 33 From: Diwanman, Vasai, India Registered: May 2003 posted 08-11-2005 06:43 AM                     Well where could I download the 1.65 OS? BTW the loudness occurence is random and not related to any one particular print.  |  IP: Logged Steve Scott Phenomenal Film Handler Posts: 1300 From: Minneapolis, MN Registered: Sep 2000 posted 08-13-2005 11:30 AM                     I had a CP500 do this at Lakeville. Is this problem occurring in all formats, digital included, or just with analog? The LED/Exciter P.S. may be to blame, or perhaps the preamp card in the 500, if the problem only exists in analog.  |  IP: Logged Alexander Alves Film Handler Posts: 33 From: Diwanman, Vasai, India Registered: May 2003 posted 09-19-2005 07:55 AM                     The processor is CP500D, capable of playing Dolby Digital, and yes the output levels actually increase. The Dolby rep says replacing the front panel will solve the problem, It also may not.Your views..  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 09-20-2005 07:00 PM                        I would have him change it. If that is not the problem, then have him change it back at no charge. Louis  |  IP: Logged Ferdinando Innocenti Film Handler Posts: 79 From: Genova / Italy Registered: Jun 2004 posted 09-21-2005 12:46 AM                     which CP500's software version have you on Dolby processor? Have you updated it as Mark said? and is your booth cool enough?  |  IP: Logged Alexander Smith Expert Film Handler Posts: 128 From: Walney Island, Barrow-in-Furness, Cumbria. Registered: Jun 2003 posted 09-21-2005 04:07 AM                     On a similar note, (previously I thought these were just random glitches) both of our CP500Ds have had an instance of "unexpected behaviour". 1. 14/6/2005 Sc4/CP500 the fader setting was spontaneously changed to zero about 20 minutes from the end of a show of "Mr And Mrs Smith". No-one was anywhere near the processor at the time. Turning the fader back up to our usual level sorted it out. 2. 30/8/2005 Sc3/CP500, digital sound playback ("Charlie And The Chocolate Factory") failed and did not automatically go to SR or bypass (result: mute sound). Re-set digital processor board and digital playback restored Ok. I was in the booth at the time, but wasn't directly looking at the processor. Both CP500s have version 1.65 firmware, our booth is air- conditioned. I'm not really looking for solutions or suggestions, unless this is a known problem with an easy and cheap solution.  |  IP: Logged

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