Toa RX-7 32 Channel mixer info needed

  • Thread starter Thread starter Somnium7
  • Start date Start date
Somnium7

Somnium7

Noise Criminal
Hi,

I recently came into posession of this really neat old console but I can't find any info about it. Is anybody here familiar with this monster?

Some things I'm interested in knowing:

When it was made...

Where to find manuals...

Where to find other owners..

If and where I might find replacement parts and schematics...

Where to get repairs...

So far the console appears to be in very good condition and in mostly working order. Faders on channels 1 - 6 are slightly scratchy. Group module 3 makes static until it warms up (found a burned resistor in here). Some of the meters do not light up.
I really like the sound of the unit. Vintage but very clean - I actually have to strain to hear background hiss with everything cranked up full. The mic pres are so fat sounding they make my Presonus Tube preamp sound anal-retentive.

Any info, advice, pointers would be greatly helpfl and much appreciated.

Thanks
Mike
 
Here's the manual.

http://www.toaelectronics.com/disc/manuals/RX-7-164_248_328_IM.pdf

I don't think you're going to find too many other TOA users out there as there stuff was more aimed at the PA crowd of users more so then the home/project studio market. I remember seeing their ads in the trade mags back in the 80's and most of it was pretty much speaker systems for small to medium sized venues. Judging by the roadie handles on your board, I'll assume this mixer was also aimed at the PA market?

Cheers! :)
 
Don't let the handles fool you this console is really not a portable - my back can attest to that. Folks I bought the unit from told me it's history which was in fact live sound at a large country music hall in NC. the hall bought it new and used it until they sold it to the music store I got it from. None of the guys at the store could give me any specifics about it's manufacture though.

As a live board it certainly has all the routings you could ever want. The way I figure, you could get 8 different mixes out without using the 4 auxes. Really flexible matrix.

Thanks for the link on the manual! I've already started printing the parts with the block diagrams and such. I managed to find a place that appears to have the schematics for download at the cost of $25. I think I'll give them a try although from looking at some of the modules PCBs I'm not sure how much help the schematics will be. There are custom circuit modules throughout. Large black cubes marked "audio op amp" and a part number. Googling the PN comes up with 4 results - none in English. If these modules are the cause of the burned resistor I think I may be SOL. However, if they are nothing but opamps then I imagine something moderner might be retrofitted if need be.
From tracing some signals it looks as though every input is transformer coupled except the recieve inputs. I also see other standard opamps and these are the old JRC 4558DX. Those devices have another number, 1374. Maybe a date code?
Alps faders. Input trannies look pretty generic. Number on them is IT-428, then underneath is 0182017 with some Japanese Kanji below that.
Construction quality is amazing and heavy. Thing's built like a battleship.
I'm still very impressed with the sound. The more I listen to it the more I like it.
 
Well, it's portable if you have a few roadies available to help you lug it! :D

I think the manual said it was around 300 pounds! :eek:

The specs do look pretty good on it though and should be more then flexible enough for a recording set up. :cool:

Good luck with getting it back into ship shape...looks like a fun project. :)

Cheers! :)
 
Thanks Ghost,

If worse comes to worse I can canibalize one module to repair others. Funny thing while I was doing some searches for parts, I found another of these for sale.
Ebay item #120108053269

Too bad he's so far away from me...

Mike
 
You must log in or register to reply here.
Back
Top