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Old 9th August 2005, 06:55 AM   #1
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Default Grommes / Western Electric G5M Tube Mixer Mods

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
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Old 8th February 2008, 11:45 PM   #2
kftool is offline kftool  United States
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Default 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
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Old 8th February 2008, 11:57 PM   #3
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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.
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Old 26th January 2010, 01:21 PM   #4
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Quote:
Originally Posted by kftool View Post
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
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Old 27th January 2010, 04:03 PM   #5
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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
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Old 27th January 2010, 06:19 PM   #6
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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.
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Old 27th January 2010, 06:40 PM   #7
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Quote:
Originally Posted by kftool View Post
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
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Old 27th January 2010, 08:32 PM   #8
AuroraB is offline AuroraB  Norway
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Now - THAT's a set of schematics I'd really like to have! ??
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Old 23rd March 2010, 07:57 PM   #9
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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.
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Old 25th May 2010, 11:17 PM   #10
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That makes two of us!

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

Quote:
Originally Posted by little-O View Post
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.
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