ROYAL OPERA HOUSE CALREC REFURB

With a comprehensive range of mixing consoles, Calrec has been a manufacturer of high quality audio products since 1964.

Moderators: GJC Designs, Richard Lumb

ROYAL OPERA HOUSE CALREC REFURB

Postby sebastian747 » Tue Jun 01, 2010 3:02 am

Hi there all,
Thought i would join this forum seeing as im about to undertake a fairly heavy pile of restoration.
I just bought this little console from the Royal Opera House in London it was sitting on their sound pallet in Wales. Anyway I thought it might be fun to catalogue the refurb that is about to happen on it, seeing as it is, i guess, a historic piece of gear used in a historic place for most of its life. I also figure that some of the other members here may know a little about it and how it works...or maybe not, it was custom built for the ROH in 1986. I do know that although custom back then, it was then shipped back to Calrec in 95 for a re customisation and a refurb, It measures up at 5ft across and 4 ft deep, 40 channels with 36 output busses..yes 36 ? now that is rare for a calrec, it has a pile of stereo returns an osc P&G faders throughout..oh yes and a pile of the dreaded dialastat switches Preh pots, the whole lot is wired to 61 pin Amphenol Mil spec connectors and a large GPO patch.

Here goes......and no i have no idea why my pix are not showing below??? they do in preview..help!
Attachments
ROH Clarec front.jpg
ROH Calrec side.jpg
sebastian747
VU Meter Specialist
 
Posts: 28
Joined: Tue Jun 01, 2010 2:06 am
Location: Bath England

Re: ROYAL OPERA HOUSE CALREC REFURB

Postby GJC Designs » Tue Jun 01, 2010 3:05 pm

Well done on your acquisition of the ROH console. It's a very serious piece of kit! You are in good company here, for although I personally do not know that much about the specifics of the console, the co-moderator of this forum, Richard Lumb has a much deeper and better knowledge of it.

cheers,
Gareth
GJC Designs
Yacht Rocker
 
Posts: 304
Joined: Fri Oct 13, 2006 12:39 pm
Location: West Yorkshire, UK.

Re: ROYAL OPERA HOUSE CALREC REFURB

Postby sebastian747 » Tue Jun 01, 2010 3:51 pm

Well thats very interesting i hope he can shed some light on a few odd loose ends that we have discovered thanks for the heads up and the forum.
sebastian747
VU Meter Specialist
 
Posts: 28
Joined: Tue Jun 01, 2010 2:06 am
Location: Bath England

Re: ROYAL OPERA HOUSE CALREC REFURB

Postby Matt Syson » Wed Jun 02, 2010 4:26 pm

Hi
I tested it when it was first built although my recollections are now rather foggy there was an issue with all the aux modules putting some aspects of the channel path out of phase which prompted either a 'bit of a mod' or rebuilt modules to rescue the situation.
Richard may have had some dealings with it in 1995, I had moved to AMEK by then.
The original manual wil be rather important, as far as I know no others were built like this although of course some of the modules had close ties with other modules in the range of the time.
Good luck and may your solder sucker not jam!
Matt S
Matt Syson
Engineer
 
Posts: 1028
Joined: Sun Oct 08, 2006 6:04 am
Location: North UK

Re: ROYAL OPERA HOUSE CALREC REFURB

Postby sebastian747 » Thu Jun 03, 2010 2:30 am

So we have now had our first look over the console, seems very sweet, very small footprint only 5ft wide. A few strange things have come to light already. We set about making sure all the multi core was with the console and discovered that the connection from the console is on 61 pin connectors, but the receiving end on the GPO bay is on 32??? and no way of locking the two together, we have to assume that the cables have been mixed up at ROH and that they still have them...or big rewire job is gonna be needed, NOT GOOD! So we set about having a look at the very comprehensive wiring schedule, and discover that it does not match the console...well it does but not really...sort of??? We have a 40 channel console with 36 output buses, the back of the console has 22 Mil Cons on it but the schedule says it should have more, then a small poke around the back and removal of the Connector panel reveals that there must have been a cock up at some point the panel numbers appear on the front and rear of the panels, some connector numbers have been scrubbed out and written in with pen (see picture)
number 22 has NO wiring hooked to it at all...ODD?? not all the 61 pins are wired, which would make sense given the bays are 32 pin, its all very neat and tidy but sniffs of a massive rework, there is even a hole for power connection that is missing?and notice that a complete panel of mil connectors has gone from the right hand side?? . Having spoken to ROH and Stephen Brant at Calrec they both seem to think that when the desk went back to Calrec in 95/96 it had a major chop up and re customisation job done, this would confirm what we were look at, question is, where are the looms and where is that new wiring schedule, we are hoping the ROH have them? here are some pictures, maybe you guys know :?:
Attachments
amphenol mil 61 pin.jpg
rear.jpg
power dist.jpg
sebastian747
VU Meter Specialist
 
Posts: 28
Joined: Tue Jun 01, 2010 2:06 am
Location: Bath England

Re: ROYAL OPERA HOUSE CALREC REFURB

Postby Matt Syson » Thu Jun 03, 2010 3:13 am

Hi
You really need to get back to the ROH about manuals and cables although I believe Calrec would 'dig in their archives' if you cross their palms for the work.
There may never have been a power connector in that last position, it is not engraved but may have been included 'in case' an extra or backup was needed.
I think all wiring internally wil have numbers so making tracing relatively easy.
Having been reworked in 95/96 there would have been new drawings made or at least notes, but then anyone could have done more to it since then.
You need to be detectives, look out for clues like different type wiring and cable numbers and bunches of cable 'tied back'.
As last resort you have to work out where the wiring goes from the modules to the connectors, there is likely to be a 'pattern'.
Matt S
Matt Syson
Engineer
 
Posts: 1028
Joined: Sun Oct 08, 2006 6:04 am
Location: North UK

Re: ROYAL OPERA HOUSE CALREC REFURB

Postby sebastian747 » Thu Jun 03, 2010 3:32 am

Hi Matt

yeah thats kinda the plot, the guys at ROH have now said they do have the up to date wiring schedule, which is a relief cos its a couple of days work to do a full track and trace of whats going on. I'm still waiting to here about the missing looms but they think they have them among the sound pallet in wales. Next job is to hook the console up to the AP and test it out see what caps are shot...faults etc...funny the first module i pulled out was number 40 it had a piece of masking tape on it with a novel written on the side .."this is bust, that is bust, mended that but still bust...gave up testing, snore!" or something along those lines.
sebastian747
VU Meter Specialist
 
Posts: 28
Joined: Tue Jun 01, 2010 2:06 am
Location: Bath England

Re: ROYAL OPERA HOUSE CALREC REFURB

Postby klett » Thu Jun 03, 2010 7:53 am

Matt Syson wrote:... I believe Calrec would 'dig in their archives' if you cross their palms for the work ...


I'd be very interested if that works... my understanding in that all engineering docs etc at Calrec prior to passing through AMS/Neve are gone... so if there is a stash and a contact name that would be some news... we had to do a similar console refurb nearly blind... made it take longer
klett
 

Re: ROYAL OPERA HOUSE CALREC REFURB

Postby Matt Syson » Thu Jun 03, 2010 8:48 am

Hi
I don't know the status of drawings or whether it is still Calrec's policy to assist with older desk info. It will certainly cost as it takes considerable time to get someone to dig the drawings out, and then copy them as many will be 'before PC'. Certainly while I was there the HP plotter was running almost 24 hours a day to draw up the various block diagrams and schematics.
I believe there have been some changes in the last year or two and it could be that they have dumped the really old stuff.
Matt S
Matt Syson
Engineer
 
Posts: 1028
Joined: Sun Oct 08, 2006 6:04 am
Location: North UK

Re: ROYAL OPERA HOUSE CALREC REFURB

Postby sebastian747 » Thu Jun 03, 2010 9:15 am

Hi john good to see you are still into consoles, we spoke a few years back about a pile of crap
oram I had that was near un useable ... Sold that and went audient and now Calrec. Anyway let me clear
up the drawing debate , Calrec did do re custom job on it Stephen brant has
confirmed this and the ROH have said they have all the drawings for the console when
that extra work was done, I have no reason to think they do not. I also hAve two copies
of drawings from the orig build the drawings and schedules are done in hand not on computers
. Gotta say that I still wait fingers x to actually see what covent garden have.
sebastian747
VU Meter Specialist
 
Posts: 28
Joined: Tue Jun 01, 2010 2:06 am
Location: Bath England

Next

Return to Calrec Recording Consoles

Who is online

Users browsing this forum: No registered users and 1 guest

cron
 
Mr Patchbay sells patchbays, tt/bantam cables and more