Film-Tech Forum ARCHIVE: dolby cp650

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Posted by Kannan Prabhu G (Member # 7685) on 01-16-2018, 05:03 AM:

hi

sir i want dolby cp650 windos 7 OS any expaly

Posted by Stephan Shelley (Member # 8587) on 01-18-2018, 02:22 PM:

Are you talking about the setup software. It is available from Dolby support. One thing is you will need a serial port on the setup computer to use it. The Ethernet port can not be used for setup on a CP650.

Posted by Mark Gulbrandsen (Member # 72) on 01-19-2018, 11:26 AM:

The best use I have found for them so far...

Posted by Sam D. Chavez (Member # 1841) on 01-19-2018, 11:46 AM:

Mark, please! Something like 40,000 cinemas did not agree with you. It is getting on in years like so many things and people too.

Now to be fair, I did the same picture with an SDDS reader years ago while we were moving AA11's so I do get it.

Posted by Scott Norwood (Member # 30) on 01-19-2018, 11:53 AM:

Mark--so, if you don't like CP650s, what is your sound equipment preference for a venue that requires modern 35mm playback capability? By "modern," I mean support of analog sound formats, SRD, and DTS?

Posted by Brad Miller (Member # 2) on 01-19-2018, 02:28 PM:

There is nothing wrong with a CP650 Mark. You are just trolling again for no reason other than to troll.

My only beefs with the CP650 are:
*Inability to play format 43 (but in fairness by the time the CP650 was released, basically nobody had a need to play 70mm mag tracks)

*Digital audio input is a joke...aka "RoboSound"...which can be overcome by simply using an external D>A converter with digital cinema.

Other than that it's a pretty damn good processor. The A and SR noise reduction is quite good too.

Posted by Carsten Kurz (Member # 5396) on 01-19-2018, 02:43 PM:

I would use a CP65/DA20 combo and a more recent digital processor, either cascaded or with a switch.

- Carsten

Posted by Steve Guttag (Member # 268) on 01-19-2018, 03:30 PM:

Brad,

As Odd as it may sound, an Optical preamp, Suitable 363 chassis, an MPU-1 and Q-SYS and you've pretty much lost the need for the CP65 or CP200. The Q-SYS will do format 43 (just set up the crossovers/summers and "snapshots." You could probably do away with the optical preamp and just use the Q-SYS mic in and, if need be, a loading resistor. Use up to three Dolby 363s for SR or A NR and again, setting up snap shots, you can have noise reduction on legacy formats. Certainly, the easy button is using a suitable cinema processor to decode "film" things.

The CP650 also lacked SR NR for 70mm (at least I don't think you could apply SR to 6-channels) and by the end of mag 70mm, it was all SR and mostly format 43 (that I ran).

I don't agree on using a D/A converter for DCinema. You've degraded the audio with your converter and then took another hit converting it right back and also gave up 2-channels of DCP (MOST movies are Surround 7.1 now and that costs near zero to implement). CP650s are just a film processor for me now. The few sites that have CP650s running DCinema were relatively early conversions for us, before we knew of Robosound and they all retained film so the CP650 made sense.

We just INSTALLED a CP650, in fact, to run film at one of the museums downtown. They have DCinema too but the CP650 JUST handles film.

Posted by Aaron Garman (Member # 1653) on 01-19-2018, 08:34 PM:

I know what robosound is but what’s the cause? Did Dolby ever address it?

Posted by Harold Hallikainen (Member # 5405) on 01-19-2018, 08:44 PM:

I believe the issue was that the AES/EBU receiver for one pair provided clock for the other pairs. Any clock skew between pairs resulted in misclocked data on the remaining pairs. I THINK the clock was derived from pair 1 and used to drive the other pairs. As such, left/right should not have this effect, but the other channels, including center, would. USL made an SRC-100 (no longer in production) to resync the pairs. This seems to have resolved the issues.

Harold

Posted by Stephan Shelley (Member # 8587) on 01-19-2018, 10:47 PM:

Dolby has beta software that may help. You can get it from Dolby Support. It works in some cases. If you do use the beta software you will get a pop when switching in and out of a digital format.

Posted by System Notices (Member # 2357) on 02-04-2019, 06:51 AM:

It has been 380 days since the last post.

Posted by Kannan Prabhu G (Member # 7685) on 02-04-2019, 06:51 AM:

DOLBY CP650 SOFTWARE CORRUPT HOW TO FKASH

Posted by Leo Enticknap (Member # 534) on 02-04-2019, 11:35 AM:

quote: Steve Guttag
We just INSTALLED a CP650, in fact, to run film at one of the museums downtown. They have DCinema too but the CP650 JUST handles film.

We are always on the lookout to acquire used ones to refurb and resell and/or install. We install about 2-3 a year ourselves, in precisely this configuration.

The Datasat AP20 with the analog 35mm optical preamp card is another option, if it's still in production. If it's fully loaded with 16 AES input and output channels it's an option I personally like, because it's extremely flexible as far as channel routing and automation goes. If a replacement audio processor is needed, with film, D-Cinema and alternative content processing capability in a single box, but without the scale of investment needed to go full Q-Sys, it's certainly an option to consider.

Anyone considering the AP20 should keep a spare power supply on site, though - after about two years they are at very high risk of sudden failure.

Posted by Carsten Kurz (Member # 5396) on 02-04-2019, 04:03 PM:

Only if you keep them on mains supply 24/7. I also heard ATI took care of it on more recent units.

- Carsten

Posted by Steve Guttag (Member # 268) on 02-04-2019, 05:05 PM:

The current unit is the AP25. I hear that the film pramp module remains available.

Posted by Marcel Birgelen (Member # 6801) on 02-05-2019, 04:33 AM:

quote: Kannan Prabhu G
DOLBY CP650 SOFTWARE CORRUPT HOW TO FKASH

Have you tried updating it using a serial cable and the PC software? If that doesn't work, then it's nothing you can easily fix yourself.

I'm not aware of the CP-650 having a JTAG port, so reprogramming the flash or replacing defective flash is something that's usually left to Dolby. Since the device is essentially end-of-life, in such case you're probably better off buying a refurbished unit.

Posted by Sam D. Chavez (Member # 1841) on 02-05-2019, 06:50 PM:

As mentioned before, I have some CP650 stock as I bought up the remaining finished 650 goods. I do have Cat. No. 797 flash memory. Not very expensive either but there is shipping. Some replace the entire 772 or 774 that holds the memory. That's substantially more of course. Brand new power supplies and most other cards as long as they last.

Posted by Marin Zorica (Member # 1716) on 02-06-2019, 05:57 PM:

When talking about CP650, a some month ago i had two on service.....as replacement was sent while this was on repair i did redraw schematic of optical input, thing which was interested me from time CP650 went on market.....and it is 99% as it is on sony DFP-D3000 as well sony DCP1000 which was way before CP650......only difference is some resistor values, which are not even critical..... I was asking myself, too strange to be coincidance, or some developing guys were same? [Big Grin]

Posted by Kannan Prabhu G (Member # 7685) on 02-06-2019, 09:01 PM:

Thank sir it cat.797 problem it will repair

Posted by Sam D. Chavez (Member # 1841) on 02-07-2019, 03:36 PM:

If the problem is really corrupt memory, new flash memory will fix it.

Posted by Kannan Prabhu G (Member # 7685) on 02-07-2019, 11:37 PM:

Thanks sir it will load software any option

Posted by Marcel Birgelen (Member # 6801) on 02-08-2019, 01:03 PM:

Your messages are a bit hard to decode, but if you already know it's the Cat. No. 797, then try to get a replacement. They're available on e.g. Ebay.

Posted by Kannan Prabhu G (Member # 7685) on 02-08-2019, 08:45 PM:

thank you sir I saw eBay it will not buy India

Posted by Marcel Birgelen (Member # 6801) on 02-08-2019, 09:09 PM:

Yeah, I guess buying India is a bit out of our league nowadays. [Wink]

I currently only see this item available.

You can always try to contact the seller directly and ask them if he wants to ship it to India anyway. I've seen many eBay sellers making exceptions.

Alternatively, you can use services like this one. I've used those in the past for a shipment to India from a U.S. supplier for some telecom and IT equipment. It's not cheap (but a whole lot cheaper than e.g. UPS, FedEx, DHL, etc.), it took a while to get through customs, but eventually it worked.

Posted by Kannan Prabhu G (Member # 7685) on 02-08-2019, 09:14 PM:

Very much thank you sir try

Posted by Kornel Krawczyk (Member # 10016) on 04-10-2019, 05:18 AM:

Hello all,

Looking for any alternate for CP650. Does any similar solution for Digital decoding from 35mm projector exist?

Regards

Posted by Carsten Kurz (Member # 5396) on 04-10-2019, 05:39 AM:

Datasat AP20/25. That does only analog/SR decoding internally, though. You can, however, add a DA20 to it for SRD.

- Carsten

Posted by Marcel Birgelen (Member # 6801) on 04-10-2019, 06:28 AM:

The only alternatives, unfortunately, for 35mm SR-D are from Dolby and are older than the CP650.

There are plenty of spare parts available though, for the CP650, so it's still a rather safe bet. If you need 35mm Dolby Digital, I'd rather use the CP650 than a DA20 hooked up to an audio processor.

Posted by Steve Guttag (Member # 268) on 04-10-2019, 07:13 AM:

Honestly, I'd take it either way (DA20/Analog CP like the CP65 or CSP1200) ro the CP650. The CP650 is in a single package so it takes up less space. But for long term...if something digital breaks in the CP650...you are sort of hosed unless you have a spare board of what has failed. With separates, keeping a CP65 or like processor going is going to be a lot easier. There are crap tons of DA20s out there too and there are very few boards in them (and are shared by CP500s).

Note, BACP still has NEW CP650s, last I checked so if Sam is looking in here, perhaps he can advise on getting one to your country.

Posted by Sam D. Chavez (Member # 1841) on 04-10-2019, 07:55 PM:

Thanks Steve. We can ship anywhere not under boycott or some place Trump picked a fight with. Poland should be easy. PM me if you are interested.

Posted by Leo Enticknap (Member # 534) on 04-11-2019, 08:18 AM:

Also, note that while hooking a DA20 to an AP20/25 can be done (I did it at the Egyptian), you do have to make a GPIO connection and set up the GPI automation in the AP to enable automatic switching between SR and SR-D. It's not rocket science, but neither is it plug and play.