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Author Topic: Optical Sound Gordon McLeod Film God Posts: 9532 From: Toronto Ontario Canada Registered: Jun 99 posted 02-26-2004 09:25 AM                     Actually RGM deserves some credit for developing there QS matrix totaly with descrete linears and there 1/2 octave q was decent as wel the autoation interface was a different story  |  IP: Logged Richard Fowler Film God Posts: 2392 From: Ft. Lauderdale, FL, USA Registered: Jun 2001 posted 02-26-2004 02:24 PM                     Ron Goigel Manufacturing ( RGM ) I put in scores of those systems in the early 1980's for the the poor independents who could not afford Dolby...they worked fine for the period. Most RGM chassis have been gutted out with UltraStereo and other power amps in the late 1990's. RGM also was in the running to buy Simplex but Strong was the high bidder. The company now focuses on equipment for the boating industry. His plant in Titusville was truely a one stop shop, raw metal and parts to end product.  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 02-26-2004 07:16 PM                       quote: The company now focuses on equipment for the boating industry. A logical move, since they had particular experience with anchors.  |  IP: Logged Steve Kraus Film God Posts: 4094 From: Chicago, IL, USA Registered: May 2000 posted 02-26-2004 08:54 PM                    Pictures?  |  IP: Logged Gilbert Travin Expert Film Handler Posts: 101 From: Villeurbanne / France Registered: Jan 2004 posted 02-27-2004 02:14 AM                        It is difficult to find anything about Siemens solar batteries (aka photovoltaic cells) on the web. However, i have found this link : http://www.elementy.pl/katalog/element.pdf/040174.pdf about the bpy64 that is the "great sister" of bpy 11 P. Thanks to Edward : your system is well conceived and astute ! [ 02-27-2004, 08:16 AM: Message edited by: Gilbert Travin ]  |  IP: Logged Tim Reed Better Projection Pays Posts: 5246 From: Northampton, PA Registered: Sep 1999 posted 02-27-2004 07:12 AM                       quote: Links to a page showing my Holmes photo-transistor pickup Edward, I looked at all your webpages... that's about the coolest thing I've ever seen. Good work on that rebuild!  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 02-27-2004 01:27 PM                     Thanks a loot for replays!! Michael i try to contact you're friend that you give me mail, but i haven't get a answer yet. Also if enibody have some dusty old amp preamp cell or what let me know!!!!!, tye type of my projector is Ernemann IV (made in germany about 1943)but that is my home projector on what i experiment with sound, the projectors i mend tu put stereo is Prexer AP-61, that is polish projector made in 1970, if you familiar i can send you some pictures of it!!!!. I hope that you help me to made my own stereo, becose i'm very entusiatic of made my own things. Thanks a lot for replays and help!!!!!!!!!!  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 03-07-2004 01:35 AM                     I saw nobody replays since last time, now i still working on sound but can somebody teel me a input caracteristic for optical preamp (sensitivity, impendace etc) and i'm also interested are preamp for cells have eqlaisantion or are they linear preamplifier, also i still havent found cellls, and if someone have a par of let me know maybe i can buy from you cheaper. Again, thanks for replays.  |  IP: Logged Matthew Taylor Expert Film Handler Posts: 186 From: Essex, UK Registered: Mar 2004 posted 04-13-2004 11:41 AM                     Marin, I just purchased a stereo cell from Iceco (www.iceco.com) for $25 which seemed very reasonable to me. It is the bare stereo chip with wires - you will need to mount this cell to something. Hope this helps.  |  IP: Logged System Notices Forum Watchdog / Soup Nazi Posts: 215 Registered: Apr 2004 posted 09-08-2005 06:34 AM                 It has been 512 days since the last post.  |  IP: Logged Marin Zorica Jedi Master Film Handler Posts: 671 From: Biograd na Moru, Croatia Registered: May 2003 posted 09-08-2005 06:34 AM                     quote: Yes, you can install DIY stereo sound pick-up instead of mono equipment ! You must use 2 solar cells pasted on a support (as low cost Siemens BPY 11 P or equivalent), photodiodes are too big : the beam must not be separated when it reaches the cells ! This is older post, but i wonder why slit beam must not be separated when reaches cells?  |  IP: Logged

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