Results 1 to 6 of 6

Thread: Dean Markley RM-80-DR schematics

  1. #1
    New Member
    Join Date
    Feb 2016
    Thumbs Up/Down
    Received: 0/0
    Given: 0/0
    Rep Power

    Dean Markley RM-80-DR schematics

    Greetings! I come in search of schematics for this Dean Markley amplifier. Has anyone come across such a thing?
    I did find the preamp section only on the Dean Markely site.

    0 Not allowed! Not allowed!

  2. #2
    Lifetime Member Enzo's Avatar
    Join Date
    May 2006
    Lansing, Michigan, USA
    Thumbs Up/Down
    Received: 1,605/7
    Given: 0/0
    Rep Power
    So CALL Dean Markley and ask if they have the rest of the amp schematic, or ask them if the rest is the same as some other model that is posted.

    0 Not allowed! Not allowed!
    Education is what you're left with after you have forgotten what you have learned.

  3. #3
    Senior Member
    Join Date
    Jun 2007
    Thumbs Up/Down
    Received: 20/0
    Given: 0/0
    Rep Power
    I agree with Enzo. The series was largely "modular", set of circuit boards for different preamps and power amps that, when combined, could lend to various different models (e.g. whole RM, DR, and SR series). Besides that, I've seen photos of some of those amplifiers which clearly indicate that there were model revisions with clear and obvious differences to earlier versions. (Hint: Google image search). So your amp may not match the one and only schematic that you'll find from Internet. So, therefore my agreement with Enzo. Never hurts to try.

    But what you have is a guide that hopefully is enough to take you through the repair process. On that note, this schematic may not match what you have in your amp, but I wouldn't be surprised if the circuit is awfully similar...

    Very similar concepts what Butler later utilised in his TubeWorks amplifiers, BTW. Some in power amp, many in preamps, particularly the starved plate "Tube Driver" circuitry.

    0 Not allowed! Not allowed!
    Last edited by teemuk; 02-26-2016 at 06:14 PM.

  4. #4
    Old Timer J M Fahey's Avatar
    Join Date
    Oct 2007
    Buenos Aires, Argentina
    Thumbs Up/Down
    Received: 1,751/18
    Given: 1,343/29
    Rep Power
    Mind you that amp has grounded output flying rails structure, so not the same as other amps.

    To begin with, do not connect speaker or load until it's fully repaired or you'll measure some very funny voltages.

    1 Not allowed! Not allowed!
    Juan Manuel Fahey

  5. #5

  6. #6
    Supporting Member Jazz P Bass's Avatar
    Join Date
    Dec 2008
    Wernersville, PA
    Thumbs Up/Down
    Received: 456/2
    Given: 238/0
    Rep Power

    0 Not allowed! Not allowed!

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. Dean Markley rm-80-dr
    By twombstone in forum Schematic Requests
    Replies: 3
    Last Post: 07-01-2019, 08:28 AM
  2. Dean Markley CD120
    By Billy Penn in forum Maintenance, Troubleshooting & Repair
    Replies: 22
    Last Post: 07-11-2015, 04:18 PM
  3. Dean Markley Signature 120
    By goldtop5 in forum Schematic Requests
    Replies: 1
    Last Post: 05-01-2015, 02:06 AM
  4. Dean Markley UltraSound 200
    By tim in forum Music Electronics
    Replies: 2
    Last Post: 07-24-2013, 06:35 PM
  5. Dean Markley DMC 80 Power Transformer Secondary AC Voltage?
    By WholeToneMusic in forum Maintenance, Troubleshooting & Repair
    Replies: 2
    Last Post: 04-15-2009, 04:48 PM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts