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Author Topic: Split optical surrounds on CP-200? Raymond Watson Film Handler Posts: 26 From: Waldron, Arkansas Registered: Feb 2006 posted 12-13-2006 02:02 PM                     Hi all, I have been doing some reading, I guess not enough, to find out how to modify a cp200 to split the surrounds in optical format. I am trying to dig up a signal flow diagram for a 200 , (the one in the downloads section is missing)........ anyhow..... It has been mentioned on here many ,many times, that anything can be done with one of these babies. I want to know how to split my surrounds in optical. I use an SRA5 and the parabolic EQ's on a 560 for P and Q,I do not have an accessory unit. I am aware of the optical stereo surround control line on JM25 and the cat. 153,and the "future" outputs for optical P and Q from the cat 150 at JM10 pins 8 and 20. I am aware that vectoring may play a part in the process, and will admit up front that while I understand a vector. I do not understand vectoring in the audio unmatrixing world......LOL Come on guys give me a little help here, I am sure it can be done. Whats the big secret.................? I am sure it will not void the warranty on my cp200 to make the mods. I should be recieving the flow diagrams in a day or two.... anyone got any pointers on where to start? Ray  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 12-13-2006 02:21 PM                     "Stereo surrounds" from an optical source will never happen. You can however obtain the same MONO surround signal from P and Q (also S) on the cat117/517 cards. You have to have digital or 70mm magnetic format 43 in order to achieve actual stereo surrounds.  |  IP: Logged Raymond Watson Film Handler Posts: 26 From: Waldron, Arkansas Registered: Feb 2006 posted 12-13-2006 02:29 PM                     Thanks Brad...... By the way, I got my first bottle of Film-Guard and a box of pads the other day...... put it on a 10 year old print..... all I can say is.... I am impressed! Ray  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 12-13-2006 05:25 PM                        In the real world, Brad is correct. However, Dolby did offer a "pentoptical" module for the CP-100 which untied the 2 matrix outputs that are normally summed on the old 116 card. Somwhere I actually have one. Louis  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 12-13-2006 06:51 PM                     Wasn't the pentoptical module the same as the 110 card to get the derived centre channel  |  IP: Logged Raymond Watson Film Handler Posts: 26 From: Waldron, Arkansas Registered: Feb 2006 posted 12-14-2006 10:03 AM                     so to make it short.... Optical tracks do not have the surrounds information split into stereo. The surround info is never split into "stereo P and Q" in the processor or control unit. Correct?...................... Thanks.... Ray  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 12-14-2006 10:33 AM                       Optical P and Q outputs are the same as the S, that is is to say, they all are the same, mono output.  |  IP: Logged

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