music reference rm5-4 schematics

stehei · 10th August 2012, 11:46 AM

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

BillEpstein · 10th August 2012, 12:01 PM

Rodger Modjeski is a great guy and would undoubtedly help you.

Music Reference | RAM Tubeworks

stehei · 10th August 2012, 12:09 PM

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

GMuffley · 21st August 2012, 08:57 PM

The pictured unit has been extensively modified and very poorly done at that.

tinitus · 21st August 2012, 10:09 PM

Quote:

Originally Posted by GMuffley

The pictured unit has been extensively modified and very poorly done at that.

I suppose you mean poorly looking appearence

GMuffley · 23rd August 2012, 08:16 PM

I was being polite. Some circuit values have been changed in addition to the horrible appearance.

stehei · 28th August 2012, 10:52 PM

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

ashalnev · 11th December 2012, 08:54 AM

Stefan,
could you share the circuit? I need it as I'm rebuilding Counterpoint sa3 phono and it uses similar circuit.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Silvaweld OTL Tube Reference 100 schematics	alopa	Tubes / Valves	0	23rd June 2011 04:54 AM
Music Angel EL34 PP + 6N2 schematics ( MINIL3 )	Gorgomat	Tubes / Valves	2	22nd September 2009 02:56 PM
Music Reference RM5 mkIII	ANALOG GUY	Tubes / Valves	2	20th January 2006 05:59 PM
Krell Master Reference Schematics (in here!)	ShinOBIWAN	Solid State	5	1st April 2005 11:39 PM
Amp Schematics up and some music	freedom	Solid State	1	22nd November 2004 02:10 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

10th August 2012, 12:01 PM	#2
BillEpstein diyAudio Member Join Date: Feb 2004 Location: The Great Smoky Mountains	Rodger Modjeski is a great guy and would undoubtedly help you. Music Reference \| RAM Tubeworks

10th August 2012, 12:09 PM	#3
stehei diyAudio Member Join Date: Aug 2012	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

21st August 2012, 08:57 PM	#4
GMuffley diyAudio Member Join Date: Apr 2007	The pictured unit has been extensively modified and very poorly done at that.

23rd August 2012, 08:16 PM	#6
GMuffley diyAudio Member Join Date: Apr 2007	I was being polite. Some circuit values have been changed in addition to the horrible appearance.

28th August 2012, 10:52 PM	#7
stehei diyAudio Member Join Date: Aug 2012	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

11th December 2012, 08:54 AM	#8
ashalnev diyAudio Member Join Date: May 2011	Stefan, could you share the circuit? I need it as I'm rebuilding Counterpoint sa3 phono and it uses similar circuit.