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Author Topic: audio connection betwen a Dolby DSP100 and a CP650 Mike Moreno Expert Film Handler Posts: 200 From: culiacan sinaloa mexico Registered: Jul 2008 posted 10-15-2010 07:06 PM                        hi, im trying to make the cable for the DB25 AES out from a Dolby DSP100 and send the audio to the option card I/O connector from a CP650 that have Cat No. 790 somone have the pin out and in to make it? thanks mike moreno  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 10-15-2010 07:27 PM                     Yeah...STOP!!!!!! They are not the same pinout nor the same signal. The CP650 with the CAT 790 card uses an unbalanced AES3-id signal at 75-Ohms. You want to use the BNC outputs of the DSP100 and then use the pinout listed in the CP650 manual. I suggest using mini-coax cable and note, all of the shields are going to tie to one pin (7 as I recall...but check that). If you want to use AES3 cable and the DB25 on the DSP100...you will need to use transformers on the CP650 input. I suggest looking at the Board from Odyssey Products...it will give you the exact same pinout you need for the DSP100 as well as have the necessary transformers and attenuation. The cost is similar to the transformers alone (as in-line cable mounts). Steve  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 10-15-2010 09:39 PM                       Are you upgrading to 7.1 audio? There is a Dolby paper that describes what you need to do. The audio board Steve mentioned is 650 Optio AES.  |  IP: Logged Mike Moreno Expert Film Handler Posts: 200 From: culiacan sinaloa mexico Registered: Jul 2008 posted 10-16-2010 12:16 PM                        well, i´ll better whait for the audio converter,i dont wanna cause a problem in the Dolby´s. thanks steve and sam. mike moreno mexico  |  IP: Logged Mike Moreno Expert Film Handler Posts: 200 From: culiacan sinaloa mexico Registered: Jul 2008 posted 10-20-2010 05:37 PM                        i still waiting for the audio converter so, Steve, you recomend the micro coaxial to send audio direct to the external analog imput from the cp650 or it goesto the option card I/O? thanks mike moreno  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 10-21-2010 12:04 PM                       It is the I/O port that needs to be connected. The Odyssey 650 Optio AES card fits on the I/O makes it a lot more simple to wire. It also has transformers so you can use the balanced out from the server.  |  IP: Logged Steve Guttag We forgot the crackers Gromit!!! Posts: 12814 From: Annapolis, MD Registered: Dec 1999 posted 10-21-2010 10:35 PM                     I'm saying that you CAN use a simple 4-wire mini-coax (75-Ohm cable) to make a direct connection between the BNC outputs of the DSP100 and the Option I/O of the CP650 with a Cat 790. You ability to make the cable may be another issue. Note too, Odyssey also makes a board for the CP650 that brings the AES3-id inputs out to BNC connectors so one could use a 3-5 wire BNC/BNC premade cable too. I tend to agree with Sam on using the AES3 (balanced) audio as that seems to be the winning trend at the moment. If you were to want Surround 7.1, for instance, you would need to use the DB25 output of the DSP100 for channels 1-6 and then use one of the BNC outputs for channels 11/12 (Lb, Rb). Steve  |  IP: Logged Mike Moreno Expert Film Handler Posts: 200 From: culiacan sinaloa mexico Registered: Jul 2008 posted 10-22-2010 04:56 PM                        ok i got it the connections in the cp650 option card I/O are: SP/DIF 1/2 + ------ Pin 1 SP/DIF 3/4 + ------ Pin 2. SP/DIF 5/6 + ------ Pin 13. SP/DIF 7/8 + ------ Pin 21. and all negtives to pin 7. is that correct? mike moreno mexico  |  IP: Logged Carlos Camargo Film Handler Posts: 2 From: Florianopolis, Santa Catarina, Brasil Registered: May 2010 posted 11-15-2010 08:11 PM                        Mike Moreno The cable worked? Carlos Camargo Brazil  |  IP: Logged Mike Moreno Expert Film Handler Posts: 200 From: culiacan sinaloa mexico Registered: Jul 2008 posted 11-16-2010 10:52 PM                        yes carlos, it was dificult to find the minicoaxial here in my city. but it works. mike moreno  |  IP: Logged

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