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This topic comprises 2 pages: 1 2
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Author
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Topic: CP200 Remote Fader
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Joe Redifer
You need a beating today
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Posts: 12859
From: Denver, Colorado
Registered: May 99
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posted 08-29-2010 12:12 AM
As always, the Dolby CP200 baffles me. I need to have a remote fader and I need to have it wake up with the remote fader selected. Inside the CP200, I see two cards (cat 117) that are labeled "Remote Fader Cards" But there seems to be no jumpers to enable this like on the CP65. These cards also have trim pots and test points for whatever reason. On the back panel, I notice that there is a section that says "To Remote Faders" and has a common and 1, 2, 3 and 4 slots, which I assume means I can hook up to 4 remote faders. On the front near the volume knob, "Activate this fader" cannot be unactivated.
So help me out, Community Who Frequents Film-Tech! How do I enable remote faders on the CP200.
Bonus question: The CP65 remote fader connection has a common as well as A, B, C and D slots, etc. If I just want to hook up one remote fader, which slots do I connect it to?
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Steve Guttag
We forgot the crackers Gromit!!!
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Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 08-29-2010 11:49 AM
Joe,
You want a "DF-1" (also by Pennywise) for your CA21s. It is the same box used for the CP65/55...etc with the CA21. Setting jumpers 4, 5, and 6 in the DF-1 will put it in CP200 position.
Then connect the DF-1 to the "Auditorium Fader" terminals on the Control Unit of the CP200. Switch the "Fader/Mute" card to "Auditorium Fader" (switch mounted on the front of the card, no need to remove the card) and then your CA21 will control its fader and also have the ability to have the CP200 change formats too. This is not a toggle setting like on a CP65...it is an either or...either you are on CA21 control or you are on front panel control. The mute function still works normally though with a CA21 it simulates that by having the DF-1 go to a "0" level and then restores the previous level upon an unmute
If you look at the AFI/Silver pictures in the gallery here, you will see a picture of the DF-1.
Please note, I've had some DF1s be troublesome with the CP200. It seems to be a relation between the CP200's power rails sagging too much and the DF-1 itself. It once took 3 tries to get a DF-1 that tracked with a particular CP200 (not the AFI/Silvers...they always worked).
Note...the Cat 204 is also shown in the AFI/silver pictures, if you want to see on of them.
I'm not as pessimistic about the CP200 as Sam just mentioned. I'm more in the camp (and I bet Sam would agree) that it has specific situations where it is the ideal processor (70mm magnetic, 35mm magnetic, more than 2 projectors, need a REAL flexible signal path) and in other situations where a different processor would be MUCH more suitable.
I have toyed many times with making "aftermarket" Cat 204s. They would be pretty easy. The 4" x 6" BUD "econobox" "Shadow" switches, a Pot. and some square hole punches (well just one size, actually) and some VERY simple electronics. Even the paint scheme isn't that difficult (grey and red). Like with so many things...it would take the right client and the right circumstance.
I know that due to our clients, we will need to support the CP200 for as long as possible. I wish BACP would add the Cat 517, 560 and 108C on the available new list...however, I completely understand that the volume of CP200s in "new" installations are going to be a VERY small percentage compared to the CP65. However, the places that have CP200s tend to be prestigious and they often don't have a suitable alternative. I plan to get the CP200 Surround 7.1 capable too (we'll see if it actually happens).
Steve
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Steve Guttag
We forgot the crackers Gromit!!!
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Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 08-29-2010 02:57 PM
Joe...if you want to control the Dolby fader on ANY of their analog processors with the CA21...you will NEED the DF1 box. On the up side, once you have it, you mount it near the Dolby processor and then let the DF1 connect to the format buttons/selectors
The "remote" fader selector on the Fader/Mute card should be left in "no remotes" if you don't have the Cat 204s. If you have it in the "remote" position, the fader will try to move to the active projector's fader...which, in your case, does not exist. The Auditorium Fader is a different animal all together...moving the switch on the front of the card selects that fader over all others. You will then use ONLY the CA21's fader.
Sam, on your Surround 7.1, did you keep 5 screen channels? I plan to keep 5 screen channels, have four surrounds and a subwoofer. My goal is to do it all "inboard" of the CP200 (with Accessory Rack).
Joe...as to versatility, the CP200 is like no other. Its biggest "flaw" is that it put the subwoofer output (then a new concept) early in the signal flow rather than carry that signal with the rest and have it output at the same stage as the rest.
What makes it so versatile is that you have many ways to get the signal in and out of it and then to manipulate it, as a new format may so dictate. Where most processors can't deal with any changes, the CP200, designed over 30 years ago, STILL rolls with the punches. It still has one of the widest signal paths (channels). If Dolby has designed the Cat 141As with 8x1 Muxes rather than 4x2s...it would be even MORE flexible.
Put the Cat 517/560s in it, update the power supply and it remains one of the best sounding processors too.
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