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This topic comprises 6 pages: 1  2  3  4  5  6 
 
Author Topic: Dolby Clones
Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 04-10-2006 10:15 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
Kintek also made the KT800 serries of processors and the infamous front surround system with the digimate amp

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System Notices
Forum Watchdog / Soup Nazi

Posts: 215

Registered: Apr 2004


 - posted 01-05-2008 07:09 PM      Profile for System Notices         Edit/Delete Post 

It has been 635 days since the last post.


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Michael Coate
Phenomenal Film Handler

Posts: 1904
From: Los Angeles, California
Registered: Feb 2001


 - posted 01-05-2008 07:09 PM      Profile for Michael Coate   Email Michael Coate   Send New Private Message       Edit/Delete Post 
Thanks, Steve for the lengthy and informative post. You provided a lot of the "how," "where" and "why," but I'm still seeking the "when"!

To my frustration, a recent attempt to obtain installation records for these early Eprad Starscopes has failed. The reply: "Our records were lost in a company move."

Should I believe it? Or are people just so uninterested in the past that they are too lazy to look for this stuff? Or do certain folks not want history preserved or accurately accounted for?

quote: Gordon McLeod
Eprad got there foot in the door with A Star is Born since Dolby could not supply enough CP50s for the SVA rollout
Really? I recall reading a trade piece that claimed there was only a single optical SVA presentation in the U.S. of "A Star Is Born" (in the Portland area, at the WESTGATE). All other stereo presentations of the film presumably would have been magnetic.

Is it possible this Eprad rollout happened later (1977? 78?) for a different feature(s)?

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 01-05-2008 09:12 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
Eprad has had several changes of ownership and locations since Al's days so I doubt many records exist it is amazing they actually can find drawings for many of there old products
Up here there was a mix of mag and optical sva prints for star is born

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Steve Guttag
We forgot the crackers Gromit!!!

Posts: 12814
From: Annapolis, MD
Registered: Dec 1999


 - posted 01-05-2008 11:39 PM      Profile for Steve Guttag   Email Steve Guttag   Send New Private Message       Edit/Delete Post 
Michael,

The older Starscope manual in the manual's section refers to StarWars so one would think it was post 1977. I know a later Eprad manual I have refers to Close Encounters of the 3rd Kind and the "mother ship"...etc.

Looking at the older manual, some of the schematics (like the "stereo" board) date back to 1975 but it seems like rest of the boards are dated in the 1977/1978 region.

It is tough to go by people's memory...I know I've messed up a few times with remembering an exact year or specific format that played. Normally, I use what film I was playing as a reference to a year or season.

About all one can do sometimes is look at the printed literature out there to get accurate information...I doubt that the drawings or copyright dates would be deliberately post/pre-dated unless they were trying to falsify patent applications.

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Michael Coate
Phenomenal Film Handler

Posts: 1904
From: Los Angeles, California
Registered: Feb 2001


 - posted 01-14-2008 01:33 AM      Profile for Michael Coate   Email Michael Coate   Send New Private Message       Edit/Delete Post 
I looked over the manual you mentioned, Steve, and noticed a 1978 date on one of the pages, so Eprad certainly was in existence by then. Coincidentally, I recently located some trade press referencing a "bulletin" dated June 15, 1978 that Dolby Labs, Inc. sent to exhibitors informing them they "could not advertise a Dolby-processed print if their sound equipment was not made by Dolby."

Apparently, Eprad (and others) flipped out over the notice and kicked off years of bad blood.

Anyway, one of the reasons I'm bringing this up is because while doing some research, I've noted 103 promoted Dolby Stereo presentations of "Star Wars" during its original release, 102 of the venues of which could be cross-checked with Dolby's installation records. I'm trying to determine if the lone engagement not identified in Dolby's records may have been one of the early Eprad units, or if it was merely a record-keeping oversight.

(The booking and theater in question, if anyone is curious, was the PATTERSON TWIN in Baltimore.)

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Tim Reed
Better Projection Pays

Posts: 5246
From: Northampton, PA
Registered: Sep 1999


 - posted 01-14-2008 02:55 AM      Profile for Tim Reed   Author's Homepage     Send New Private Message       Edit/Delete Post 
FWIW, Eprad was in existence in the 60s, making drive-in equipment. They had one of the best in-car speakers available.

I hear the Margaret Herrick library has every issue of BOXOFFICE. You could just find when the first Starscope ads hit and go from there.

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Michael Coate
Phenomenal Film Handler

Posts: 1904
From: Los Angeles, California
Registered: Feb 2001


 - posted 01-14-2008 03:18 AM      Profile for Michael Coate   Email Michael Coate   Send New Private Message       Edit/Delete Post 
Excellent suggestion, Tim. Except I've already done just that...and didn't see anything in Boxoffice (or any other trades from the era) to help me answer my question.

A related question regarding "Tommy" (1975) and "Quintaphonic Sound"...

What was required (sound processing-wise) of a theater to play "Tommy" in said format? A Dolby CP-100? A CP-100 + an add-on of some sort? A Sansui something-rather? Other? And were these devices returned to their owners upon the termination of the "Tommy" engagement?

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Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 01-14-2008 07:39 AM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
FWIW: When I was at DTS last summer they showed me an Indian Clone of the DTS 6. In its steel chassis it weighed in at three times the weight of a real 6D. Inside it had a permanent floppy drive to serve as a boot loader. The front panel looked identical... the audio board was a real DTS replacement part. Everything else inside was Indian manufactured.

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 01-14-2008 08:54 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
There is an excellent article in a SMPTE journal on quintaphonic by John Mosley
It use the LCR mag tracks with DBX nr and a sansui qs matrix on L and R to give a P and Q channel
It was if memory serves a 3 unit high card cage

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Bill Gabel
Film God

Posts: 3873
From: Technicolor / Postworks NY, USA
Registered: Jan 2002


 - posted 01-14-2008 11:08 AM      Profile for Bill Gabel   Email Bill Gabel   Send New Private Message       Edit/Delete Post 
quote: Michael Coate
What was required (sound processing-wise) of a theater to play "Tommy" in said format.
The Fox Wilshire Theatre engagement had a Dolby CP-100, Dolby MPU-1 and the unit Gordon mentioned above, for playback of the film. A friend of mine has the the Fox Wilshire's Quintaphonic unit plus a 35mm mag print in Los Angeles.

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Tim Reed
Better Projection Pays

Posts: 5246
From: Northampton, PA
Registered: Sep 1999


 - posted 01-14-2008 11:08 AM      Profile for Tim Reed   Author's Homepage     Send New Private Message       Edit/Delete Post 
quote: Michael Coate
Excellent suggestion, Tim. Except I've already done just that.
Wow, Eprad used to run ads (I remember 1/4 page display ads for the Starlet processor in particular). At the very least, there should've been mentions under "new products" or Show-A-Rama trade show reports.

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Michael Coate
Phenomenal Film Handler

Posts: 1904
From: Los Angeles, California
Registered: Feb 2001


 - posted 01-14-2008 11:23 AM      Profile for Michael Coate   Email Michael Coate   Send New Private Message       Edit/Delete Post 
Tim...I'll take another peek next time I'm at the Herrick Library.

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Dick Prather
Master Film Handler

Posts: 259
From: Portland, OR, USA
Registered: Feb 2002


 - posted 01-15-2008 06:00 PM      Profile for Dick Prather   Email Dick Prather   Send New Private Message       Edit/Delete Post 
The oldest Eprad processor I used was called "STAR" not "STARSCOPE". Probably sometime in 1977. It did have Cat 22's for NR. The EQ cards were Eprad 1 octive but had 1/3 octive boards with empty holes for the added components. Both NR and EQ slots were the same as Dolby and cards would interchange.

Matrix card was too close to Dolby's so they sued Eprad. It sounded just like a CP-50 when set up properly. Later matrix cards were much different and they used their own NR cards but were still a seperate card. Early manuals told theatre owners not to use Dolby Stereo in advertising. Later versions with the combined NR cards wern't very good.
Dick

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Louis Bornwasser
Film God

Posts: 4441
From: prospect ky usa
Registered: Mar 2005


 - posted 01-15-2008 07:52 PM      Profile for Louis Bornwasser   Author's Homepage   Email Louis Bornwasser   Send New Private Message       Edit/Delete Post 
Dick is right. I was there (Eprad) for a dealer meeting when they were designing that unit. A very young engineer was working behind a cardboard office on a "secret" project: the Star. They had a CP-50 manual, but not a unit. I offered to loan them one!

It was just OK; remember though this was in the era before the 150 dolby card, so even the cp-50 was just OK. Louis

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