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Author Topic: THX Crossover Cards Paul Stevens Film Handler Posts: 42 From: Galena, Ohio, USA Registered: Oct 2006 posted 02-09-2013 01:27 PM                     The cards that were substituted when we lost certification years ago were the same cards, but apparently neutralized of all set points with pots painted over. Does anyone have knowledge of setup, or purposes of R45, R48 and R51? Also anyone having an excess monitor bridge it seated into and want to sell please let me know. Please message me privately if you wish.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 02-09-2013 02:06 PM                        I have almost 30 thx card cages. These were made by dbx and predated the thx monitor cage. All you need is the cards. Louis  |  IP: Logged Paul Stevens Film Handler Posts: 42 From: Galena, Ohio, USA Registered: Oct 2006 posted 02-10-2013 01:50 PM                     Hi Louis Do they have power supplies? Paul  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 02-10-2013 07:45 PM                        Yes, the orignal thx used only the dbx frames. A very robust power supply is on board. (Will accept up to 9 cards.) Later, they added the monitor. I had a few installations that had the monitor as well as a better regular monitor. The thx monitor was OK in output, but very short on gain. It could be hard to hear in a noisy booth. louis  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 02-10-2013 09:35 PM                       There were 2 later THX monitor/Crossovers. The one Louis is describing is the THX 3417, which is actually THX 1138's wife # in the movie. BACP later contracted to build the D1138 version. Almost 1,000 were built before THX got sold by Lucasfilm and got out of making hardware.  |  IP: Logged Louis Bornwasser Film God Posts: 4441 From: prospect ky usa Registered: Mar 2005 posted 02-11-2013 06:54 AM                        Ironically their own monitor was never thx approved! (but the dbx frame was!)  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 02-11-2013 09:26 AM                       Dolby equipment never was THX approved as Dolby Labs would not submit to THX as it were, so to speak.  |  IP: Logged

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