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Author Topic: Hookup Sound from RCA jacks to Dolby CP 65 Mike Markwood Film Handler Posts: 9 From: Barberton, Ohio, USA Registered: Aug 2003 posted 08-25-2003 12:02 PM                     I need to hookup sound from a Satellite Receiver (2-RCA Jacks for output) to a Dolby CP65. Any suggestions on the best way to do this? All I've been able to get so far is sound out of the center stage speaker and I'd like to get more than that.  |  IP: Logged Aaron Sisemore Flaming Ribs beat Reeses Peanut Butter Cups any day! Posts: 3061 From: Rockwall TX USA Registered: Sep 1999 posted 08-25-2003 12:41 PM                     Simply connect the L/R outputs of the satellite box to the L/R non-sync inputs, and set the jumper on one of the cards (I cannot remember which one (card or jumper) right now) to allow surround in non-sync mode and this should give you L/R/S mode (In pre-CP500 Dolby processors, non-sync never was routed to the center channel via matrixing) without having to deal with padding down the sat box (to connect it to the proj 2 solar cell inputs). -Aaron  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 08-25-2003 02:43 PM                     On the CP65 it is possible to set the non-sync mode to be fully matrix decoded, is it not? There's a jumper on the Cat443 for this. Certainly on the CP50 and CP55 it's not possible, but there are ways, especially easy if you have an SRA5 installed....  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 08-25-2003 07:51 PM                     There are always...ways...even on the CP-50 and CP-55...but on the CP-65 a 2:4 decode is available right out of the box as others have described...set the jumper on the Cat. 443 Steve  |  IP: Logged Duncan Smith Film Handler Posts: 50 From: England Registered: Jan 2003 posted 08-28-2003 08:22 AM                     Yeah Steve, that's totally true. I get L,C,R,S and sub from my non-sync on my CP65 and I'm reliably informed it can be done with a CP55 and SRA5 too (not sure about the sub but I don't see why not). Dunk.  |  IP: Logged Pete Naples Phenomenal Film Handler Posts: 1565 From: Dunfermline, Scotland Registered: Feb 2001 posted 08-28-2003 01:11 PM                     Indeed it can be done on a 50 or 55 with or without an SRA5, having an SRA5 just makes it a little neater imho. One thing though, I often come across CP45, 65's, 500 and 650's where the operator has decided that non-sync should be pro-logic decoded. IMHO unless the non-sync source is ENcoded it sounds cack. With most of the pop music drivel they play being essentially two channel mono, or joint stereo all that really happens is most of the signal gets shoved out of the centre, with the surrounds shh shh'ing and sub going woobawoob. I much prefer to have a stereo non-sync source (CD player) in stereo, with the surrounds off. Keep the pro-logic decoding for pro-logic sources!  |  IP: Logged Josh Jones Redhat Posts: 1207 From: Plano, TX Registered: Apr 2000 posted 08-29-2003 12:03 AM                        Its easy to get a cp-55 to decode center. Just snip one diode on the cat 243. Sub on the other hand, is a bit more of a trick. Josh  |  IP: Logged Brian Guckian Jedi Master Film Handler Posts: 594 From: Dublin, Ireland Registered: Apr 2003 posted 08-30-2003 12:34 PM                     Greetings Pete; One thing I've never quite understood is how matrix decoding can extract unintended surround information. Is it because the phase shift used to encode surround can sometimes occur "naturally" in a L-R pair so to speak? I more easily get how frequencies can be re-directed to the sub(s) via OBE, etc. Also presumably you can set up the different non-sync progs in the CP500 and CP650 so you can have one with matrix decoding and one without. But what about the CP65 and earlier? Are there any mods to switch between say CDs that are just L-R and the newer CDs which are Dolby encoded? Cheers!  |  IP: Logged Mike Markwood Film Handler Posts: 9 From: Barberton, Ohio, USA Registered: Aug 2003 posted 09-04-2003 05:46 PM                     I set the jumper (J2) on the CAT. No. 443 for Surround. I've tried J4 with both STD and 2:4 and all I get sound out of is my center screen speaker. Anybody have any ideas?  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 09-04-2003 07:36 PM                     Is it possible you have a mono nonsync feed? If so the decoder would give you only centre channel  |  IP: Logged Brian Guckian Jedi Master Film Handler Posts: 594 From: Dublin, Ireland Registered: Apr 2003 posted 09-05-2003 11:07 AM                     Mike, what signal present LEDs are illuminating on the Cat. 242 when you're running the satellite feed? I had this problem a few years ago with a cable TV decoder going into the CP65. In that case, though the decoder box was clearly fitted with L-R output phonos, the output was actually in mono. This was to do with how the cable feed was connected into the decoder in the first place (via an RF input). In the end, we had to run the feed via a stereo VCR and then into the decoder, whereupon we got proper LCRS. The actual source could be mono, but surely all satellite stations must broadcast in stereo / Dolby Surround. Do you have any Dolby Surround-encoded CDs? That would show up if the problem is in the Non-sync 2:4 decoding, though it seems unlikely. It's sounds like the problem is with the decoder. Hope this helps.  |  IP: Logged Jean-Michel Grin Expert Film Handler Posts: 222 From: Geneva & Lausanne, Switzerland Registered: Jul 2002 posted 09-05-2003 06:15 PM                        A tip just in case: Add a audio ground separating transformer between the satelite reciver ant Your Dolby processor to suppress hum and ground loops. An alternative to the expensive Di-Boxes is to use an audio transformer such as used in car audio installations. I've used a bactch in some multiplexes and i'ts sound well, and nobody will note an alteration of the Non-sync audio signal... Bye,  |  IP: Logged System Notices Forum Watchdog / Soup Nazi Posts: 215 Registered: Apr 2004 posted 10-05-2007 05:26 PM                 It has been 1490 days since the last post.  |  IP: Logged Lyle Romer Phenomenal Film Handler Posts: 1400 From: Davie, FL, USA Registered: May 2002 posted 10-05-2007 05:26 PM                     quote: Josh Jones Its easy to get a cp-55 to decode center. Just snip one diode on the cat 243. Sub on the other hand, is a bit more of a trick. Which diode on the cat 243 do you snip to get center? If you wanted OBE enabled how would that be done?  |  IP: Logged Christos Mitsakis Expert Film Handler Posts: 242 From: Ag.Paraskevi, ATHENS, GREECE Registered: Sep 1999 posted 10-06-2007 02:20 PM                     Lyle look no further than here in Film-tech. Search for "How do I get 4 channel non-sync from a CP55?" Christos.  |  IP: Logged

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