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Author Topic: Disable Matrix Decoding on NSYNC / AUX - USL JSD80 Sascha F. Roll Expert Film Handler Posts: 140 From: Berlin, Berlin / Germany Registered: Sep 2015 posted 05-17-2019 01:28 PM                     Hi there, is there any way to disable the Matrix Decoding Function that is by default enabled on Nonsync/Aux Inputs (Analog and SPDIF)? All the Best Sascha  |  IP: Logged Marcel Birgelen Film God Posts: 3357 From: Maastricht, Limburg, Netherlands Registered: Feb 2012 posted 05-17-2019 02:15 PM                     I guess it depends on the decoder. But afaik, the default for the Nonsync input on the CP-650 and CP-750 is Format 60, which AFAIK is L/R without Subwoofer and doesn't do any matrix decoding. This is the full table: Format 60: Nonsnyc Format 61: Nonsync w/ SW Format 70: Mono C w/ SW Format 71: Mono C Format 73: ProLogic LCR Format 74: ProLogic (w/o SW) Format 75: ProLogic w/ SW PS: Didn't read the subject apparently. Don't have sufficient experience with the JSD-80 to comment on it. But I do remember a drop-down option in the client software, where you could specify the type of matrix-decoding.  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 05-17-2019 03:04 PM                     Hard to believe there is no option to disable matrix decoding on NS/AUX inputs. I know there were a few discussions on matrix decoding with the JSD80, but I can't see anything in the manual suggesting it is possible at all? The JSD80 brochure though seems to suggest it is possible, and may not be disabled at all: 'Two S/PDIF inputs with Dolby® AC3 or ProLogic on RCA jacks' 'Two non-sync stereo inputs with surround decoding on RCA jacks' Clueless, without access to a model on current software and with the latest config GUI...maybe Harold can help... - Carsten  |  IP: Logged Harold Hallikainen Jedi Master Film Handler Posts: 906 From: Denver, CO, USA Registered: Aug 2009 posted 05-17-2019 05:50 PM                        I don't remember the JSD-80 very well, and I'm at the Dayton Hamvention without a Windows computer, so I can't look at the GUI. the GUI is, however, available at http://ftp.uslinc.com/Products/JSD-80/Software/GUI/ . Harold  |  IP: Logged Marcel Birgelen Film God Posts: 3357 From: Maastricht, Limburg, Netherlands Registered: Feb 2012 posted 05-17-2019 09:57 PM                     http://www.film-tech.com/warehouse/manuals/USL-JSD-80.pdf Page 33: 10.5 Format Options Isn't that what you're looking for?  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 05-17-2019 11:16 PM                     No you cannot disable the matrix on either nonsync or aux to the best of my knowledge  |  IP: Logged Carsten Kurz Film God Posts: 4340 From: Cologne, NRW, Germany Registered: Aug 2009 posted 05-18-2019 05:36 AM                     The only thing I remember is that there are some options to configure the matrix decoding for film formats, but I think there are no such options for NonSync and Aux. Sascha is familiar with the Setup Software, and while the manual doesn't show screenshots of format options for NonSync and Aux, I am sure Sascha would have found them. Weird if it actually can't be disabled. From my experience, matrix decoding may give pleasing results with some material, but can have strange effects on other signals. And sometimes you simply don't want that to happen. I recently had to play a video where matrix decoding lead to near full extinction of dialog. While that certainly was a fault in the audio track, I was lucky I could disable matrix decoding on our AP20 for that presentation. - Carsten  |  IP: Logged Sascha F. Roll Expert Film Handler Posts: 140 From: Berlin, Berlin / Germany Registered: Sep 2015 posted 05-18-2019 10:00 AM                     Thanks for your input! I have the latest Laptop GUI and Firmware on the JSD80 itself, there is no option to disable Matrix Decoding there. I was hoping there is a semi-hidden way to disable, Dip Switch on the Board or similiar... Best Sascha PS: The problem became evident last night at our open air cinema: Q&A in front of the screen (speaker), Rackmixer fed into the analog Nonsync --> Mic signal on Center channel, which of course didn't work with the people standing directly in front of the Center speaker. I temporarily fixed that with feeding the rackmixer into the L /R input on the DB25 8 channel analog input which is usually occupied by the DA20 / DTS. (Yes we're also playing 35mm at our open air...)  |  IP: Logged Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 05-18-2019 01:54 PM                     If your mic mixer has a mic level output feed it into the JSD80 mic input which can be set to surround only  |  IP: Logged

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