Grommes / Western Electric G5M Tube Mixer Mods

[tablebeast]

HI, I'm new here and I just aquired a cool device. Its a Grommes / Precision Electronics / Western Electric G5M Tube Mixer. Its a lot like the Altec 1567 Tube mixer but has a lot of important improvements. It has 5 transformer balanced mic inputs, , a line input, tube EQ, and a master gain stage. Basically I want to refresh and modify it. I would like to install DI inputs bypassing the transformer and direct outs for each of the 5 mic channels. It uses both sides of a 12AX7 per channel so I assume there should be sufficient gain for the direct outs. I want to use this as the front end for my DAW. I want the individual outputs for use recording drums and I want to use it as a mixer in its natural state for overdubs, utilising multiple mics into one output. What I'm looking for is any help with this. I could use a schematic if there is one out there. Maybe one of you guys has one of these? How would I go about installing the mods on this? Thanks in advance guys.

Jesse Mesa-Savage

 

[kftool]

Grommes g5m mixer

Hi guys, I have a schematic for the above mixer along with a few of them.

reply if you are so inclined.

Ken fritz, Richmond, VA

 

[tubewade]

I have one, but have never tried to modify it. Just used it as is.

A schematic would be very much appreciated. If you want to post it here or send to wadenjulie at netzero dot net I would be very grateful.

 

[battles]

Hi guys, I have a schematic for the above mixer along with a few of them.

reply if you are so inclined.

Ken fritz, Richmond, VA

Hey Ken,

Hope you don't mind me contacting you this way. Any chance you could email me a copy of that Grommes G5M schematic? My address is : ryanpaulyoung@hotmail.com

Also, do you happen to know what type of input transformers it takes / WHERE in the world to get them?

Thanks for any advice you could offer, I appreciate your time.

Cheers,
--ryan

 

[DaveInVA]

That's a nice mixer, My Dad was General Manager for Grommes back then. He had started there as an Engineer in the 50's, left and then went back there later. I also have the schematic and even the sales spec sheet packed up around here somewhere.

Dave

 

[battles]

Oh sweet, yah both of those would be wonderful. I found out yesterday that I need either T1-L or T1-LA input transformers. Any idea where to might locate some?

Thanks so much for your help.

 

[Wavebourn]

Hi guys, I have a schematic for the above mixer along with a few of them.

reply if you are so inclined.

Ken fritz, Richmond, VA

Hi Ken;
I sent you e-mail.
Would you be so kind to send me a schemo?

Anatoliy

 

[AuroraB]

Now - THAT's a set of schematics I'd really like to have! ??

 

[little-O]

If anyone has a G5M that is collecting dust and not seeing much use, please PM me or email me. I've been on the hunt for one. I wish to do some mono recording with it.

 

[tubegetter]

That makes two of us!

Anyone that is looking to seel a GM5 please PM me here as well. Thanks!

If anyone has a G5M that is collecting dust and not seeing much use, please PM me or email me. I've been on the hunt for one. I wish to do some mono recording with it.

 

[quayhog]

Does anyone know where a schematic of the G5M is located?
Jonathan Horne
Quayhog53(at)gmail.com

Sorry to be late to the party.