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Author Topic: CP200 Split surround
Mark Gulbrandsen
Resident Trollmaster

Posts: 16657
From: Music City
Registered: Jun 99


 - posted 03-02-2005 11:19 PM      Profile for Mark Gulbrandsen   Email Mark Gulbrandsen   Send New Private Message       Edit/Delete Post 
Actually the EV surrounds may not be that bad... just depends of there are enough of them in the room, they're not real efficient. The TS-8 actually has a pretty decent curve considering what its price was... about 90 bucks..... If any tweeters are blown e-mail or call me for the part number of a better Peerless replacement tweeter that costs about 12 bu
cks.

Mark @ CLACO

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 03-03-2005 09:34 AM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
a 9 volt battery on the heads? hmm that alone could cause a lot of damage considering a mag head preamp has about 65db of gain

I suspect that there is an error in either the programing of the format cards for format 10 or the connection of the DA20 sub to the pin on the edge connector
I put your noise gennerator in and test for sub output in the mag format

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Brad Miller
Administrator

Posts: 17775
From: Plano, TX (36.2 miles NW of Rockwall)
Registered: May 99


 - posted 03-03-2005 03:16 PM      Profile for Brad Miller   Author's Homepage   Email Brad Miller       Edit/Delete Post 
He wrote "leads". I take that as to mean the speaker wires to the subwoofer. [Cool]

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 03-03-2005 06:04 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
sorry my misreading

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Darren Briggs
Master Film Handler

Posts: 371
From: York, UK
Registered: Dec 2001


 - posted 03-06-2005 02:33 AM      Profile for Darren Briggs   Author's Homepage   Email Darren Briggs   Send New Private Message       Edit/Delete Post 
Rich, a few things to check
Is the sub enable switch on the 560 actually on??
Is J6 ont he Cat 560 in the CP200 position?
As mentioned by Gordon the format card could be programmed wrong.
Does the 'Bass Extension' led light up at all?
Are you getting sub from Optical sound?

Darren

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Rich Ferrando
Film Handler

Posts: 64
From: Royal Oak, MI
Registered: Nov 2003


 - posted 03-06-2005 01:29 PM      Profile for Rich Ferrando   Author's Homepage     Send New Private Message       Edit/Delete Post 
Yes, the sub enable switch is on, and yes it's switched to CP200.

The Bass Extension LED only lights up in Mag formats.

No sub in optical sound - though, one of the other issues is that since the upgrade, Optical sound has been Mono.

I pulled the card that required the numerous soldered-on diodes. I'm no expert, but as far as I can tell, they seem to be correct.

Also- this house is equipped with the Left and Right extra speakers for 70mm, and those channels don't seem to be functioning either (I built a little breakout box for external inputs - DVD player, etc - and connected it to the Mag input, and all channels function except Le and Re.)

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 03-06-2005 02:04 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
why is it only mono
the obe doesn't work in format 01

sounds to me that whoever installed it isn't familiar with the cp200 and as such shouldn't have been playing with it
sounds more like a downgrade rather than upgrade got done

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Rich Ferrando
Film Handler

Posts: 64
From: Royal Oak, MI
Registered: Nov 2003


 - posted 03-06-2005 02:19 PM      Profile for Rich Ferrando   Author's Homepage     Send New Private Message       Edit/Delete Post 
We always run optical in Format 04. It's Format 04 that's coming through as Mono.

Our regular tech thinks that there's some sort of internal switching issue, but no one can figure out exactly what's going on since, as I stated, everything "appears" to be wired and soldered correctly.

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 03-06-2005 02:33 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
04 should not be playing as mono
does the cat 150 card led show output on any other channel than centre?

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Rich Ferrando
Film Handler

Posts: 64
From: Royal Oak, MI
Registered: Nov 2003


 - posted 03-07-2005 12:04 AM      Profile for Rich Ferrando   Author's Homepage     Send New Private Message       Edit/Delete Post 
Cat 150 LED shows only center channel.

One thing I've noticed is that, when the CP200 is running an analog track (i.e. on a trailer) the Center-channel LED on the DA20 (yes, the DA20) also lights up and shows signal. This doesn't happen in our other two houses (DA20 with a Smart Mod V, and DA20 with Ultra Stereo JS-200.)

Is this just a Dolby equipment-related thing, or could this be a sign of crossed wires?

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Darren Briggs
Master Film Handler

Posts: 371
From: York, UK
Registered: Dec 2001


 - posted 03-07-2005 11:52 AM      Profile for Darren Briggs   Author's Homepage   Email Darren Briggs   Send New Private Message       Edit/Delete Post 
Sounds a bit like an A chain problem.
Or the format cards have been messed with a little too much!
Le and Re are only used in 40 and 41 if i recall or a custom format. Is your Le, Re amp on, has the mods to the backplane gone wrong in a bad way.

DA20 will show what ever is coming from the A chain part of the CP200, i.e. Matrix card. Then it is fed back from the DA20 to the B chain of the CP200 via Assy Unit if you have one, then to Control unit of CP200.

OBE should be on in 04, 05, 42, 43.
Optical sound deos have Sub. OBE= Optical Bass Extension/Expansion which ever!

Why dont you run in SR, you have Dolby Digital but no SR???
Do you not have an SRA-5??

I would suggest you get an engineer in to sort out whats going on.

Darren

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Rich Ferrando
Film Handler

Posts: 64
From: Royal Oak, MI
Registered: Nov 2003


 - posted 03-07-2005 12:38 PM      Profile for Rich Ferrando   Author's Homepage     Send New Private Message       Edit/Delete Post 
We don't have an SRA5. Dolby told me to simply swap the Cat 22's with Cat 280T's.

I have the Cat 280T's installed, but since optical is running as Mono - most likely in a bypass mode - the NR cards aren't being used.

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Gordon McLeod
Film God

Posts: 9532
From: Toronto Ontario Canada
Registered: Jun 99


 - posted 03-07-2005 12:57 PM      Profile for Gordon McLeod   Email Gordon McLeod   Send New Private Message       Edit/Delete Post 
bypass on the cp200 is only possible on the rotary front panel switch
I think someone screwed up on the jumpers on the backplane orsetting up your formats
Also it is possible one of the switch cards has failed

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