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Author Topic: DSTR Reading 1's and 0's Dean Kollet Jedi Master Film Handler Posts: 591 From: Florida State University Registered: Jul 2003 posted 03-17-2004 11:37 PM                     yeah. kinda. but the question is, the sound plays perfectly with 4-6's but does that take out anything of the sound quality?  |  IP: Logged Daryl C. W. O'Shea Film God Posts: 3977 From: Midland Ontario Canada (where Panavision & IMAX lenses come from) Registered: Jun 2002 posted 03-17-2004 11:42 PM                        So long as it's not dropping below 6 and failing, most anyone you find won't be able to tell that the processor is guessing to cover the errors.  |  IP: Logged Robert Schultz Film Handler Posts: 28 From: Tehachapi, CA, USA Registered: Mar 2004 posted 03-18-2004 12:01 AM                        Dean...1st - check the lamp. If you haven't changed your lamp is quite some time then you may get everything working good again with a simple lamp change. If your lamp is in good shape and you are still getting poor readings then you need to do a complete alignment on this unit. If you are familiar with working a dual trace oscilloscope and you are mechanically inclined enough to work on projectors then you will have no problem following the alignment procedure for any Dolby reader. You will need to use a new loop of test film and preferrably have a computer hooked up with the DRAS software so that you can also see your alignment results in the Dolby software. Using the oscilloscope along with a laptop and the DRAS software makes the alignment procedure very nice. Also...Dolby has found that every piece of test film seems to have some error in the patch alignment on the film. There is a new alignment film called QC10 (CatNo.530). This film has an offset for the lateral, vertical, and azimuth adjustments that 'in theory' will set your reader to 'perfect'. If you use these offsets in your alignment with DRAS then you should always be well within the tolerance of any film that is printed as 'acceptable' but not perfect.  |  IP: Logged Daryl C. W. O'Shea Film God Posts: 3977 From: Midland Ontario Canada (where Panavision & IMAX lenses come from) Registered: Jun 2002 posted 03-18-2004 12:13 AM                        I prefer to just use a few of the most average trailers I can find and align accordingly to them. Afterall, you don't show the audience test loops. Although the QC'd test loops sound interesting.  |  IP: Logged Sam D. Chavez Film God Posts: 2153 From: Martinez, CA USA Registered: Aug 2003 posted 03-18-2004 12:51 AM                       Thank you all for the good press. Not to be too modest, but I just did the Fearless Tales Film Festival with loaned equipment from Dolby, including new 2 Cat. 701's. I was getting 1 and 2 with an occasional 0 on a new print of "Tool Box Wars, a new Tobe Hooper film. These readers were on top of 2 Super Simplex's mounted on an RCA 9030's with arc lamps no less. Lonny and I were kidding that there were probably only three prints of the movie in existence so they better be good. The print quality as regards SR.D is definitely getting better. I saw an earlier post about readers on top of Christies having higher error rates because of jitter. The Christie projector with a penthouse reader reads very well in my experience as there is no particular jitter caused by the incoming sprocket. The optical sond head is another matter entirely of course as there is nothing but jitter.  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 03-18-2004 12:56 AM                     The Christie projector gate is one of the more abrasive gates out there. As such if you were to run a movie through it 100 times vs something like a Kinoton or Cinemeccanica, you would find the error rating would have increased by a point or two over that time frame. It's definitely not jitter related, it's the abrasiveness like I mentioned in my post above. In fact if you take notes on the error reading of each reel, you will see that as each reel passes, the damage gets worse (assuming that platters are being used). This is why it is common to hear reports of "the digital track wearing off" after only a few weeks of running. Anyone doubting me, run the test for yourself. This is assuming of course that you are just running the film without cleaning, or through either dry media or PTRs for cleaning.  |  IP: Logged Mark Gulbrandsen Resident Trollmaster Posts: 16657 From: Music City Registered: Jun 99 posted 03-18-2004 09:13 AM                     "The print quality as regards SR.D is definitely getting better." Well, I wish I could agree with you on that regarding my service area. We still reaglarly get prints that won't play right out of the can, and some that ahve just bad reels. The worst I have seen it was last November to the end of this past January where this was getting to be a very common occurance.... Because this problem has been so on going, several of our bigger customers have asked us to switch over completely to DTS on their new projects they have started because they have far fewer playback problems with that format. Mark @ CLACO  |  IP: Logged Brad Miller Administrator Posts: 17775 From: Plano, TX (36.2 miles NW of Rockwall) Registered: May 99 posted 03-18-2004 02:23 PM                     I can't agree with you there Mark. DTS seems to continue to have lots of issues, but the worst problem of all is those new stupid dvd-type of cases they are shipping the discs out in! It's getting ridiculous, easily 25% of the discs I get are scratched up because the cases opened during transport and get badly scratched, or they come in flat out broken. You can't play a broken disc. Maybe the local depot here doesn't know how to pack the cans, but I see it from prints via TES too. I fail to see how prints going to Utah would have SRD tracking problems and yet there be no issues in Texas. I would look more for a tinkerer in your booths or lousy projectionists in general as the source of your problems.  |  IP: Logged

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