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Author Topic: EX with DTS and 650
Antonio Marcheselli
Phenomenal Film Handler

Posts: 1260
From: Florence, Italy
Registered: Mar 2000


 - posted 02-10-2003 08:51 AM      Profile for Antonio Marcheselli   Author's Homepage   Email Antonio Marcheselli   Send New Private Message       Edit/Delete Post 
Is it possibile to have EX decoding on an external 6 channel input (DTS) with a CP650 unit?

Bye
Antonio

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Michael Schaffer
"Where is the
Boardwalk Hotel?"

Posts: 4143
From: Boston, MA
Registered: Apr 2002


 - posted 02-10-2003 10:35 AM      Profile for Michael Schaffer   Author's Homepage   Email Michael Schaffer   Send New Private Message       Edit/Delete Post 
The user format 87 in the CP650 setup is called "External 6-Channel + Surround EX", so it appears to be possible.

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Karen Hultgren
Master Film Handler

Posts: 492
From: Agoura Hills, CA, USA
Registered: Mar 2000


 - posted 02-10-2003 11:34 AM      Profile for Karen Hultgren   Author's Homepage   Email Karen Hultgren   Send New Private Message       Edit/Delete Post 
Yes Antonio, it is.

Karen at DTS
khultgren@dtsonline.com

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Bas Raijmakers
Film Handler

Posts: 4
From: Hengelo, The Netherlands
Registered: Feb 2003


 - posted 02-10-2003 12:08 PM      Profile for Bas Raijmakers   Author's Homepage   Email Bas Raijmakers   Send New Private Message       Edit/Delete Post 
Hi there,

Can a similar feature also be used on a CP500/SA10 combination (in other way because the format doesn't exist here) ?

- Bas Raijmakers

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Jon Bartow
Master Film Handler

Posts: 287
From: Massachusetts
Registered: Nov 1999


 - posted 02-10-2003 01:17 PM      Profile for Jon Bartow   Email Jon Bartow   Send New Private Message       Edit/Delete Post 
Bas,
On a CP500/SA10 combo with a DTS6(D) you need to make an adaptor for the SA-10.
Assuming the following:
format 10 Dolby Digital non-EX on softkey 4
format 10 Dolby Digital-EX on softkey 8
format 11 External 6-channel on softkey 5

make your adaptor as follows:
DB25M to DB25F pin-to-pin connector
except, cross pins 5 and 8

you can put a switch in so that you can either have your adaptor be pin to pin or with pins 5/8 crossed.

With the pins crossed the SA-10 will engage whenever format 11 (SK5) is selected, but not format 10 (SK8). With the pins striaght it will engage for format 10 (SK8) but not format 11 (SK5)

I usually put the switch (DPDT toggle) mounted on the front panel of the rack nicely labeled for the operators.

Jonathan

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Antonio Marcheselli
Phenomenal Film Handler

Posts: 1260
From: Florence, Italy
Registered: Mar 2000


 - posted 02-10-2003 03:56 PM      Profile for Antonio Marcheselli   Author's Homepage   Email Antonio Marcheselli   Send New Private Message       Edit/Delete Post 
Hi

What about this "modification" for SA-10 + DTS6D? Is it just for automation purpose? I believe that if you able the SA10 manually it has no problems with DTS since DTS is before CP.

Cannot the SA10 work properly if CP500 is not in DD-SK8?

Bye
Antonio

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Jon Bartow
Master Film Handler

Posts: 287
From: Massachusetts
Registered: Nov 1999


 - posted 02-10-2003 07:29 PM      Profile for Jon Bartow   Email Jon Bartow   Send New Private Message       Edit/Delete Post 
The SA-10 comes pre-wired for the "EX enable" pulse to be present on pin 8 of the automation input. Therefore with a CP500 you HAVE to put the format 10 on SK8 for DDEX. OR you have to wire a custom cable for the SA-10 if you want to use a different SK (it will work just fine, but why go through the trouble).

For DTS-ES using a Dolby SA-10 with a CP500 use an adaptor for the automation input on the back of the SA-10 as I described above.

If you are going to use an SA-10 with a DTS unit, you want the automation to be able to engage/disengage the SA-10 in case the DTS unit drops out for some reason.

With a CP500 or CP650 the DTS audio output goes into the CP500/650 for eq/level settings then out to the amps (or out to the SA-10 then the amps for the surrounds)

The SA-10 requires an automation pulse to engage "EX" mode. Just pushing the "enable" button in will not engage the "EX" mode. (you can force "EX" mode, but then it's there for analog too)

Am I making sense Antonio?

Jonathan

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Antonio Marcheselli
Phenomenal Film Handler

Posts: 1260
From: Florence, Italy
Registered: Mar 2000


 - posted 02-10-2003 07:39 PM      Profile for Antonio Marcheselli   Author's Homepage   Email Antonio Marcheselli   Send New Private Message       Edit/Delete Post 
Jon,

Of course you are! Thanks!

So:
1. you can force the EX but it will work for any format
2. SA-10 comes with a cable that enable EX only when SK8 is selected. But EX is working only when a Dolby Digital is active on SK8? So I cannot set a DTS on SK8 and have EX working?
3. Is the SK8 automation a feature that comes with the first SA-10s? I feel to remember that the SK8 feature was a software upgrade born AFTER the SA-10 appeared on market.

Bye
Antonio

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John Wilson
Film God

Posts: 5438
From: Sydney, Australia.
Registered: Dec 1999


 - posted 02-10-2003 08:51 PM      Profile for John Wilson   Email John Wilson   Send New Private Message       Edit/Delete Post 
Beware...if you select ES on SK-8 you do just that...select it. That means if the dts fails for whatever reason or you 'forget' to put the discs in and your automation switches it in, when the dts fails, it will not switch out. You will have no sound.

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Bas Raijmakers
Film Handler

Posts: 4
From: Hengelo, The Netherlands
Registered: Feb 2003


 - posted 02-11-2003 04:41 AM      Profile for Bas Raijmakers   Author's Homepage   Email Bas Raijmakers   Send New Private Message       Edit/Delete Post 
Antonio,

In our setup, SK8 is only used to force EX playback on non-flagged copies. When a reel is correctly flagged (to set the SA10 automatically into EX mode), the CP500 (v. 1.61, no problems yet) sticks to SK4 (default setting, format 10). SK8 should only be used when forcing a non-flagged reel to EX playback.

Now let's try this tweak at work [Wink]

- Bas

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Michael Schaffer
"Where is the
Boardwalk Hotel?"

Posts: 4143
From: Boston, MA
Registered: Apr 2002


 - posted 02-11-2003 10:47 AM      Profile for Michael Schaffer   Author's Homepage   Email Michael Schaffer   Send New Private Message       Edit/Delete Post 
I did not know that EX encoded tracks are flagged. I thought the automation would activate the SA-10 every time the processor played digital, switching EX decoding off during analogue playback to avoid the unit sending all the audio to the back surround.

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Jon Bartow
Master Film Handler

Posts: 287
From: Massachusetts
Registered: Nov 1999


 - posted 02-11-2003 01:45 PM      Profile for Jon Bartow   Email Jon Bartow   Send New Private Message       Edit/Delete Post 
Antonio,
1- yes you can force EX through a "test" mode, but it is not for normal operation and switching to analog will not turn it off.
2- You can program the CP500 for format 11 (external 6 channel) on SK8 but then you have to rewire the DTS automation cable as well. So leave well enough alone and have format 11 on SK5 and format 10 EX on SK8
3- AFAIK the automation cable has remained the same throughout then entire run of SA-10, but the "flagged" prints require an upgrade to the older units to work.

If you have a CP500/SA-10/DTS6(D) setup I have found the easiest way is to connect everything according to the installation manuals and then add the adaptor I described above to use the SA-10 with the DTS

Jonathan

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Bas Raijmakers
Film Handler

Posts: 4
From: Hengelo, The Netherlands
Registered: Feb 2003


 - posted 05-19-2003 05:56 PM      Profile for Bas Raijmakers   Author's Homepage   Email Bas Raijmakers   Send New Private Message       Edit/Delete Post 
Thanks Jon,

Your tip worked out great [thumbsup]
I finally got some time to build a switchbox according to your description of the pins and it works very fine with the Matrix Reloaded (first test, more will definetely follow), are the DTS discs with this copy ES encoded by the way?

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Daryl C. W. O'Shea
Film God

Posts: 3977
From: Midland Ontario Canada (where Panavision & IMAX lenses come from)
Registered: Jun 2002


 - posted 05-19-2003 11:54 PM      Profile for Daryl C. W. O'Shea   Author's Homepage   Email Daryl C. W. O'Shea   Send New Private Message       Edit/Delete Post 
No the Matrix Reloaded is not an ES (DTS) or EX (Dolby) release.

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Jean-Michel Grin
Expert Film Handler

Posts: 222
From: Geneva & Lausanne, Switzerland
Registered: Jul 2002


 - posted 05-20-2003 02:17 PM      Profile for Jean-Michel Grin   Author's Homepage   Email Jean-Michel Grin   Send New Private Message       Edit/Delete Post 
Hi Daryl,

Are you sure ? On the film box is labeled Dolby digital EX, but on the leader is only marked Dolby SRD. Mysterious is'int ?

For connecting a CP500 + SA10 + DTS6 I dont have an idea, but I've experienced some troubles with a CP500 + SA10 + a SDDS DFP2000 connected in serial with the SA10:

When we played the feature in SDDS a DC voltage from ±6 vDC appears on the surround outputs at the four surround amplifiers. And even if we trying to force the SA10 to work, pushing SK8, the SA10 unit refused to work....
To end with this problem, I disconected the SDDS unit... [Frown]

But why tis DC voltage at the output when the SDDS unit play ?

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