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Author Topic: Digital Cinema Connection Help!!!
Kyle Abel
Film Handler

Posts: 56
From: Plano, TX, USA
Registered: Apr 2001


 - posted 08-14-2001 02:19 PM      Profile for Kyle Abel   Author's Homepage   Email Kyle Abel   Send New Private Message       Edit/Delete Post 
Hello all. We just got all the equipment for the Live Concert Broadcast tomorrow. Unfortunatly, we are having problems hooking up the audio to play through the processor to get the surround sound. Here is the basic audio setup (I'll go into the equipment more in the previous thread in the Floor section):

Satallite receiver left/right RCA output
Ultra-Stereo JSX-1000A processor

Is there a way to conncet the left/right outs from the receiver through the processor to use all the channels, or do you have to have a receiver to decode the signal into the separate channels?

A Possible connection could be:

Satallite receiver left/right out to
Pro-Logic receiver, speaker outputs to
Aux inputs on U*S processor (L,C,R,S)

Any help would be great.

Thanks.

------------------
Kyle Abel
General Manager
Plano Movies 10

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Adam Martin
I'm not even gonna point out the irony.

Posts: 3632
From: Dallas, TX
Registered: Nov 2000


 - posted 08-14-2001 03:11 PM      Profile for Adam Martin   Author's Homepage   Email Adam Martin       Edit/Delete Post 
It depends on the coding of the audio signal they are sending.

If it's Pro-Logic, you need an external Pro-Logic decoder. If it's not encoded, then all you're gonna get is left/right anyway unless you "synthesize" faux surround with the external decoder. If it's theatrical SR, I suppose you could feed it into the projector-2 input, but you risk damaging your preamp (or more) with the line-level signal.

Which brings another point, speaker-out to aux-in is a bad idea. Too much power coming into the processor when it's expecting a line-level signal. Much better if the decoder has line-level outputs.

I won't even mention that this is another reason why I think this whole concept is stupid. Oops, I guess I just mentioned it.

If it's just stereo, let the big-wigs realize the error of their ways. Don't try to dress it up with fake surrounds, as you'll only make it worse than it already is.

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Brad Miller
Administrator

Posts: 17590
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99


 - posted 08-14-2001 03:46 PM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
Personally I would use the external Pro-Logic decoder, but another way "may" be to use the non-sync inputs for your pure Left and Right signals. Unfortunately, I do not remember if the JSX-1000 decodes full "pro-logic" matrixing w/subwoofer or not. Can anyone confirm or deny this?

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Gordon McLeod
Film God

Posts: 9390
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 08-14-2001 05:38 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
The backplane of the jsx has a terminal strip with some straps on it labled NRA-outL jumped to Matrix in L and the same for Right
remove the strap and connect the outputs of the satelite to those points marked MATRIX IN l and MATRIX IN R and set the format to stereo a to get decoding
remember to put the straps back afterwards


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Randy Stankey
Film God

Posts: 6355
From: Erie, Pennsylvania
Registered: Jun 99


 - posted 08-14-2001 09:15 PM      Profile for Randy Stankey   Email Randy Stankey   Send New Private Message       Edit/Delete Post 
You doin' Sugar Ray tomorrow too?
They brought in the Barco DLP today and I got a call to come and help him hook it up.

We are using a DSP-60. He just "threw over" a couple pairs of wires for L-R stereo. We're just hooking it up to the NonSync.

We were going to hook it up to the aux inputs but we decided against doing all that foolig around. The signal is just L-R stereo anyway.

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Gordon McLeod
Film God

Posts: 9390
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 08-14-2001 09:20 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
Even just left/right stereo usually decodes well especially since it will access the sub as well

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Kyle Abel
Film Handler

Posts: 56
From: Plano, TX, USA
Registered: Apr 2001


 - posted 08-14-2001 10:41 PM      Profile for Kyle Abel   Author's Homepage   Email Kyle Abel   Send New Private Message       Edit/Delete Post 
Gordon,

I'll give the matrix inputs a shot. It sounds like it should work. I wasn't sure if my processor would use all the channels from left/right inputs. I'll let you know how it goes.

Thanks.

------------------
Kyle Abel
General Manager
Plano Movies 10

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Randy Stankey
Film God

Posts: 6355
From: Erie, Pennsylvania
Registered: Jun 99


 - posted 08-15-2001 11:05 PM      Profile for Randy Stankey   Email Randy Stankey   Send New Private Message       Edit/Delete Post 
We got it all hooked up today.
We used a DSP-60 (USL) and it worked out pretty well. It did decode to the surrounds and subs pretty well.

How was your incomming signal? The one we got was pretty crummy. It was WAY top-heavy! When we listened to the "bumper music" before hand we thought the processor was out of EQ. I broke out the "hardware" and re-EQ'ed the house. It was still pretty crummy.

Since it was a DSP-60 processor, I saved the original settings and my new EQ settings. I left the computer hooked up during the show so we could make some adjustments on the fly. It was STILL crappy so we tweeked it up a little. (knocked down the 5K + 3.5K bands and upped the 50 + 64 bands.) It still wasn't great but it was acceptable under the circumstances.

The video guy got a call from one of his buddies at another location asking if the sound was crummy. Not only did he say it was top heavy, he said the signal was weak.

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John Pytlak
Film God

Posts: 9987
From: Rochester, NY 14650-1922
Registered: Jan 2000


 - posted 08-16-2001 08:16 AM      Profile for John Pytlak   Author's Homepage   Email John Pytlak   Send New Private Message       Edit/Delete Post 
Randy said: "The video guy got a call from one of his buddies at another location asking if the sound was crummy. Not only did he say it was top heavy, he said the signal was weak."

Did they end up using a consumer-quality "Dish Network" system instead of a larger commercial dish? Was it an HD feed, or just standard definition? What video projectors were used?

------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Eastman Kodak Company
Research Labs, Building 69, Room 7419
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion

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Gordon McLeod
Film God

Posts: 9390
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 08-16-2001 09:37 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
The possible reason that it might be dull and top heavy is that some satelite audio uses DBX type2 compression as does stereo TV broadcast

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Kyle Abel
Film Handler

Posts: 56
From: Plano, TX, USA
Registered: Apr 2001


 - posted 08-16-2001 04:08 PM      Profile for Kyle Abel   Author's Homepage   Email Kyle Abel   Send New Private Message       Edit/Delete Post 
Gordon, I connected the sound through the matrix inputs and worked great, thanks!

John, they installed consumer dishes, and I believe just used standard definition feed.

Randy, I really didn't have a problem with the eq of the sound. It was WAY too low. We had our processor on 10 and still was a hair soft. We leveled our channels a few days prior to the show, and I think it seemed to help. We watched Eric Clapton and Sting concert DVD's through the system before the show to make sure it was set up properly, and the sound was really good. The satallite signal was just not hot enough.

------------------
Kyle Abel
General Manager
Plano Movies 10


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Randy Stankey
Film God

Posts: 6355
From: Erie, Pennsylvania
Registered: Jun 99


 - posted 08-16-2001 06:03 PM      Profile for Randy Stankey   Email Randy Stankey   Send New Private Message       Edit/Delete Post 
Yeah, it was a plain ol' Dish and it was a standard resolution feed.
When I went in and EQ'ed the house I also took the liberty of cranking up the levels, internally so that wasn't so much of a problem for us. I think we were running the show with the processor's fader on "7" or "8".

So, what was your attendance like? We didn't have very many at all. Maybe 15 people total. Some of those were freebies, given away by a local radio station!

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Charles Everett
Phenomenal Film Handler

Posts: 1470
From: New Jersey
Registered: May 2001


 - posted 08-16-2001 06:37 PM      Profile for Charles Everett   Email Charles Everett   Send New Private Message       Edit/Delete Post 
Randy: This "live" concert also was in the UA Union Square in NYC. It wasn't promoted AFAIK and likely didn't draw. I found out about it only because I was at Union Square to see Made again.

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Bob Maar
(Maar stands for Maartini)


Posts: 28608
From: New York City & Newport, RI
Registered: Feb 2001


 - posted 08-16-2001 07:05 PM      Profile for Bob Maar   Author's Homepage   Email Bob Maar   Send New Private Message       Edit/Delete Post 
OK, Kyle you have my attention. I am looking forward to your post after the show. Unfortunatly, I won't be near a computer from Friday until Monday. Don't anyone go looking for me I will be with Saucy Sylvia.

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Gordon McLeod
Film God

Posts: 9390
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 08-16-2001 07:32 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
The bus level of the Ultra Stereo is 700mv for 50% modulation the consumer standard has 0db at 700 mv that is why it is a bit low

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