This is topic Digital Cinema Connection Help!!! in forum Digital Cinema Forum at Film-Tech Forum ARCHIVE.


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Posted by Kyle Abel (Member # 819) on 08-14-2001, 02:19 PM:
 
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
 


Posted by Adam Martin (Member # 641) on 08-14-2001, 03:11 PM:
 
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.

 


Posted by Brad Miller (Member # 2) on 08-14-2001, 03:46 PM:
 
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?
 
Posted by Gordon McLeod (Member # 33) on 08-14-2001, 05:38 PM:
 
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


 


Posted by Randy Stankey (Member # 64) on 08-14-2001, 09:15 PM:
 
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.
 


Posted by Gordon McLeod (Member # 33) on 08-14-2001, 09:20 PM:
 
Even just left/right stereo usually decodes well especially since it will access the sub as well
 
Posted by Kyle Abel (Member # 819) on 08-14-2001, 10:41 PM:
 
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
 


Posted by Randy Stankey (Member # 64) on 08-15-2001, 11:05 PM:
 
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.
 


Posted by John Pytlak (Member # 331) on 08-16-2001, 08:16 AM:
 
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
 


Posted by Gordon McLeod (Member # 33) on 08-16-2001, 09:37 AM:
 
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
 
Posted by Kyle Abel (Member # 819) on 08-16-2001, 04:08 PM:
 
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


 


Posted by Randy Stankey (Member # 64) on 08-16-2001, 06:03 PM:
 
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!
 


Posted by Charles Everett (Member # 889) on 08-16-2001, 06:37 PM:
 
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.
 
Posted by Bob Maar (Member # 763) on 08-16-2001, 07:05 PM:
 
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.
 
Posted by Gordon McLeod (Member # 33) on 08-16-2001, 07:32 PM:
 
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
 
Posted by Randy Stankey (Member # 64) on 08-16-2001, 09:24 PM:
 
This event was a "live" concert from Atlanta. It was "Unkle Kracker" and "Sugar Ray".

We were talking about this last night: Our job isn't to review the thing... It's to get the picture/sound up on the screen.
After you see enough of these "dogs with fleas" you start to learn. But... suffice it to say, I don't know WHY anybody would pay $15 to come and watch something that they might be able to see on MTV! (Only MTV would be better, in my opinion.)

Gord: Thanks for the tip! I had that info stored somewhere in the back of my mind but I didn't explicitly think about it. As long as I was able to jack up the levels with the computer, everybody was happy.
On the other hand, that guy from the other site (Memphis) wasn't so happy. He was trying to tap his feed into a CP-500. He said he had the fader on "10" and he was just barely able to get an acceptible level. I was going to try to tell him how to tweek it over the phone but: 1) I don't know the CP-500 well enough yet. 2) It's not MY equipment that I would be telling him how to fiddle with so I didn't want to take any chances.
However, for future reference, it might be nice to have that info.
 


Posted by Kyle Abel (Member # 819) on 08-18-2001, 02:52 AM:
 
Randy can confirm or deny any of this info, but here's the rundown of how the show went (this was my first experience with digital cinema).

1. Equipment was installed day prior to show, not enough time to correct problems, which became apparent immediately
2. The wrong lens was brought to us. I had initially given throw distance from the last row in the auditorium, because I didn't know how big the projector was (we had very little info given to us), but they went ahead and installed the thing in the booth anyways. Needless to say we had MAJOR problems getting the image presentable.
3. The installers knew little about the system. I watched them for an hour or so playing with it, not knowing why the image didn't look quite right. I finally piped in and asked if the lens was for the floor or the booth, trying to point them in the right direction. I had to come in late that night, and spent 2 hours playing with the machine until I got a good picture. I will say the machine (Barco DLC-600?) was VERY user friendly. After watching the guys for an hour I was able to get the image proper. And as evident from the start of this thread, the installers did not know how to connect the sound.
4. The show was Sugar Ray, not a big crowd pleaser nowadays, and it was on a Wednesday during the school year. Had the show been the Backstreet Boys, or Britney Spears, or something, I believe we would have had a huge draw, any day of the week (real concert tickets are getting up to $100, so $15 ain't too bad).
5. The show ended up being a cuss-fest. I lost count of how many fucks, and motherfuckers, and shits, and whatever else was said. Not to mention the drinking, smoking, and sexual content that was in there. I believe it was billed as an all-ages event, but I could be wrong.

I believe, in the right context (proper day of the week, high-drawing content) this could be a viable money-maker during off-peak times of years. For us in Dallas, when the Dallas Stars were in the playoffs last year the Studio Movie Grill was showing the games on multiple screens and having good turnout for this (am I correct Ethan?). With smart planning this can work.

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


 


Posted by Pete Naples (Member # 761) on 08-18-2001, 04:10 AM:
 
Interesting.

I'm not familiar with that Barco machine (perhaps they use different model numbers in the US?) I'm assuming it's not a dark chip DLP, probably one of their SLM/ELM range. You're spot on right there, those beasties are very user friendly, and once set up right the picture is quite stunning. Some of the Barco machines can be networked and remote controlled via the network. I heard a true story of a universoty someplace that has loads of Barco 6500 machines in various lecture theatre, professor was trying to turn on the machine but the lamp had expired, just as he lifted the telephone to call the AV tech, said AV tech walked into the theatre with a new lamp. Prof is astounded by this and asks how he knew the lamp had failed. Easy, the projector e-mailed me and told him!

It's a shame though that an event like this is such a hassle because the organizers don't send people who know what they are doing. I've encountered similar situations lately myself.
 


Posted by Randy Stankey (Member # 64) on 08-19-2001, 01:42 AM:
 
We also got our setup the day before but we had no problems at all getting it working. I got called to the theatre right about lunch time and our guy already had all the equipment set up with an image on the screen. He was just waiting for me to come in and hook up the sound. (I got caught in traffic at the Downtown Tunnel on I-264 )

In talking to this guy, he told me that he works for a company called I-Mag, out of Atlanta, GA. (Where the concert was being held.) Appearently his ordinary work involves doing i-mag for rock concerts and the like. He seemed to know his shit pretty well.

On the day of the show I came in just before the last movie of the day and brought my RTA and computer. We had a little over an hour to get all the last minute details taken care of and we finished with plenty of time to spare. I set up the mics/mux box with help from the booth manager and "consulted" with the video tech on EQ job. (After all, this was officially his gig.) When I was done with that, I walked the auditorium to check the sound while the video guy sized-up and focused the projector. It was at this time that we discovered the crummy sound and low levels, so I went back into the processor and made the afformentioned readjustments. We were done, probably, 20 minutes before the show started. I had time to take a few pictures of the set up.

It was the "latest" Barco DLP projector. I don't remember the exact model number but it had a sizeable xenon lamp inside. Since I had never seen one of these babies close up before, I asked the video tech to show me what made it tick. (I showed him some of my stuff in return.) As was stated before, the satellite reveiver was just a standard "off the shelf" Dish Network receiver. Nothing special about it at all. We even took a few minutes to check out the latest news on ESPN while we were waiting on the movie to end, before we did the final setups.

I have to agree with you, Kyle, the "content" of the show wasn't all that spectacular. Not only do I not care for this type of "music", it wasn't a very good production. There were several instances where the picture was out of focus and some of the shots weren't framed well at all. (Heads were cut off and the camera "cut away" from the action at just the wrong times, on several occasions.) Of course, as we mentioned before, the sound feed left a lot to be desired. It was very top-heavy (over emphasized high freq.) and the level was very low. Even though I was able to boost the processor's output internally with the computer we still had to have the fader on "7 1/2" to get good volume. Even later, we decided to turn the volume up. We made a "strategic" decision on that one, though. We decided to wait until the "warm up act" was done playing and crank the volume for the feature act. (In other words we tried to make it look like we actually meant to do it that way! )

During a couple of parts of the "show" we discovered that the lip sync was slightly off. I don't think that the video tech would have noticed if I hadn't pointed it out. (Being a "film guy", I am trained to look for that where a guy who is "strictly video" wouldn't be.) It seemed to "fade" in and out of sync. It would last for about 30 seconds and then it would be OK for several minutes. No, it wasn't because the performers were doing a bad job of lip-syncing the music. I first noticed it during the "backstage interview" segments where the band members were talking directly into a mic. It wasn't something goofy with my DSP-60 processor, either. We went up to the booth and checked on the TV monitor connected diretctly to the reciever and the problem was still there. I figure it could have happened at any one of about 100 places along the line, so we just ignored it. I don't think it was bad enough for the customers (all 15 of them) to notice.

All-in-all, this event was a success, technically speaking. Customer-wise, this was show really TANKED! Like you, Kyle, I can't imagine why they put it on a mid-week night right after summer vacation is over. Nobody (who is interested in this kind of show) would be able to come on a school night. Even us guys who worked there didn't watch the show. We went into the auditorium to check on things after it got well under way and quickly left after that. The last part I remember was the song that went, "If heaven ain't a lot like Dee-Troit..." (If you call THAT a song.) Even the UB's on duty who were running the other 17 screens didn't watch it! Tells you a lot right there, doesn't it? The video guy and I went out and checked out a couple of movies while the concert was going on. We came back and checked on things every once in a while bit that was IT. I even left the building early. The equipment didn't have to be loaded out until the next day, so all the video guy had to do was pack things up in the road boxes and leave it in the designated place. I came back in the next morning to make sure the sound system was OK for running movies again. It was and I left. By that time the video guy was long gone.

The producers/backers of this show HAD to know it was going to tank. I can't imagine anybody who thought this would make money. I heard through the grapevine that this event was costing them something like $15,000 - $20,000 per location. That doesn't include the production facilities and techs at the venue. It doesn't include the uplinks/downlinks and it CERTANLY doesn't pay for the "bird". (Which is horrendously expensive, I'm told!) The ONLY reason I can think of for having this event is because they wanted to do some kind of "technology demonstration" to prove that it can be done. My hunch is that the people who put this on are trying to lure some big investors into producing some kind of "big event" in the future. You know how some corporate types can be... "No, That'll never work!"...

I'm betting that the whole reason for this event was to to do it "on spec" for some big wig sitting in an office somewhere, in hopes of making money on a future gig.


 


Posted by Pete Naples (Member # 761) on 08-19-2001, 09:39 AM:
 
From what I can see that is a Barco SLM, either a G5 or an R6. It's the rental/staging version as opposed to the executive version because it's black cased and has grab handles. I don't think it's an ELM, it doesn't look big enough. The lamp is 1.2kW, but it comes in a factory aligned reflector, as a plug in module. The SLM is the latest in non dark chip DLP's, with a resolution of either 1024x768(G5) or 1280x1024(R6) and 5,000 ANSI Lumens.

Expensive piece of kit for 15 customers!
 


Posted by Randy Stankey (Member # 64) on 08-19-2001, 01:35 PM:
 
It's kinda' hard to get a good picture in a dark booth isn't it?
Here's a close up, although I'm afraid it's not much better.


 


Posted by Pete Naples (Member # 761) on 08-19-2001, 02:10 PM:
 
99.9% Certain that there machine is a Barco SLM, the size, proportions and cable positioning is all wrong for an ELM.

We recently installed one of these babies in to a cinema in London.
 


Posted by Kyle Abel (Member # 819) on 08-19-2001, 06:12 PM:
 
My Barco was different than that. It was a little bigger, had a blue/gray casing. I believe it was a DLC 6500.

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


Posted by Randy Stankey (Member # 64) on 08-19-2001, 07:57 PM:
 
Our guy was able to size his image to fit our screen pretty darned well. His image was 16X9 and he was able to size/squeeze it so it fit out Flat screen almost perfectly.

He did it with some kind of remote control. I don't know exactly because I was doint other things while he was doing that.
 






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