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Old 10th August 2012, 11:46 AM   #1
stehei is offline stehei  Netherlands
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Default music reference rm5-4 schematics

Hello,

first posting on this site, nice community!
I bought a heavy neglected music reference rm-4 preamp with an external
powersupply. The former owner has been chaning a lot inside the amp,
not all for the good of it (messed up the phono section).

Does anybody have a schematic of this amp? I have a friend who builds tube amps and is willing to help me out, but it would be a lot easier with a layout,
etc. I live in europe, which means the former owner made a power supply suited for 220 volts,

hope someone can help me out,

kind regards

stefan
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Old 10th August 2012, 12:01 PM   #2
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Location: The Great Smoky Mountains
Rodger Modjeski is a great guy and would undoubtedly help you.

Music Reference | RAM Tubeworks
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Old 10th August 2012, 12:09 PM   #3
stehei is offline stehei  Netherlands
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Hi Bill,

thanks for the response. I emailed rodger, looking forward to see what can be done.
the thing is, the unit operates, and sounds great. But I would like to get a check on the
safety in operation, don't want a fire in the house

regards

stefan
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Old 21st August 2012, 08:57 PM   #4
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The pictured unit has been extensively modified and very poorly done at that.
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Old 21st August 2012, 10:09 PM   #5
tinitus is offline tinitus  Europe
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Quote:
Originally Posted by GMuffley View Post
The pictured unit has been extensively modified and very poorly done at that.
I suppose you mean poorly looking appearence
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Old 23rd August 2012, 08:16 PM   #6
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I was being polite. Some circuit values have been changed in addition to the horrible appearance.
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Old 28th August 2012, 10:52 PM   #7
stehei is offline stehei  Netherlands
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hi,

I got the schedule from rodger, and we are going get all the rubbish out, and the original parts in. Will be dirty job, but it can be done,

regards

stefan
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Old 11th December 2012, 08:54 AM   #8
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Stefan,
could you share the circuit? I need it as I'm rebuilding Counterpoint sa3 phono and it uses similar circuit.
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Old 14th August 2013, 12:26 AM   #9
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Default rm-5-4 schematics

G'day,
I am too repairing someone's poorly modified units could you please share the schematics also pls?

Cheers

Rob
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