Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Total newbie post - trying to replace ext. PS on vintage Mark Levinson ML-1 preamp
Total newbie post - trying to replace ext. PS on vintage Mark Levinson ML-1 preamp
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
Thread Tools Search this Thread
Old 2nd August 2009, 05:38 PM   #1
yamezxx is offline yamezxx  United States
diyAudio Member
Join Date: Aug 2009
Default Total newbie post - trying to replace ext. PS on vintage Mark Levinson ML-1 preamp

Sorry for the newbie post, but here goes.

I recently purchased some vintage audio gear at an estate sale auction. One piece of gear was a Mark Levinson ML-1 solid state preamp, which dates from approximately '77 to '80. Unfortunately, the external power supply was not included. Thus far, I've been unable to find a replacement online. I'm hoping something eventually pops up on eBay. In the meantime, I'm thinking of building a quality power supply so that I can actually make use of the preamp until I find the real deal online.

I have experience with a soldering iron building speakers and can follow (though not design) a schematic. I've never dealt with power supplies before and don't know the first thing about them. Mark Levinson tells me that the power supply was plus or minus 15V, 500mA each rail. They weren't sure of the pin configuration, and the connector is a bit of a mystery as well (see below).

Any suggestions or insights on where to start would be greatly appreciated. Thank you very much.

Click the image to open in full size.
  Reply With Quote
Old 2nd August 2009, 10:21 PM   #2
mightydub is offline mightydub  United States
diyAudio Member
Join Date: Dec 2006
Location: Where the sky loves the sea
A simple way to get started is here: http://sound.westhost.com/project05a.htm

See mouser.com and/or digikey.com, etc. for parts. You may also be able to find a mate for the connector, or just get a new male/female connector pair that fits the hole in the chassis. With basic electronics knowledge, you should be able to open up the chassis and determine the connector pinout.

Once you have something simple like that behind you and are feeling like tackling something more complicated, there are several different regulator designs to be found here on the forum, and probably many people who will insist that a Mark Levinson design demands a more sophisticated regulator. But for now, start simple and bring that piece back to life.

Also if you post in the Solid State forum there's probably someone who can come up with the schematic for the preamp and original regulator.
  Reply With Quote
Old 6th August 2009, 12:37 AM   #3
Andersonix is offline Andersonix  Sweden
diyAudio Member
Andersonix's Avatar
Join Date: Jan 2004
Location: Marin County, California
Total newbie post - trying to replace ext. PS on vintage Mark Levinson ML-1 preamp
Here's one from Marchand for $100. A bit pricey, but ready to solder together...
  Reply With Quote
Old 26th August 2009, 04:29 PM   #4
johnYks is offline johnYks  Australia
diyAudio Member
Join Date: May 2006
Even better! the real thing

On ebay recently.....


Last edited by johnYks; 26th August 2009 at 04:31 PM. Reason: Clutz _don't know how to send complete page...
  Reply With Quote


Total newbie post - trying to replace ext. PS on vintage Mark Levinson ML-1 preampHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Mark levinson No.26 preamp Schematic Adams_Leo Solid State 4 26th November 2015 05:31 AM
Mark Levinson 38 Preamp Schematic highviewvideo Everything Else 11 11th October 2014 02:39 PM
Replace Mark Levinson ML-2 with MJ15024/15025 need help emergency Solid State 23 29th October 2011 11:29 PM
Mark Levinson ML1 Preamp Schematic thermionic Solid State 3 25th February 2009 11:26 PM
My Mark Levinson 38S was out-performed by a $1150 passive preamp Sunsun22 Chip Amps 4 28th June 2005 12:53 PM

New To Site? Need Help?

All times are GMT. The time now is 05:43 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio