2. amps-preamps
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Mark Levinson ML-1 power supply

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.

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

Showing 5 responses by yamezxx

yamezxx OP
5 posts
 
Thanks. Calex got back to me (quickly!) to say they don't manufacture external power supplies.

Joe, I only had contact with the company through my local repair shop, so they may be more helpful when I call this week to confess my ignorance. That's not really a comment on your complaint. I just don't have an opinion one way or the other yet.

I'm relatively new to owning higher end audio gear. I've built several pairs of speakers before, using others' designs. But I've only been out of grad school for about four years, so until now I couldn't afford much beyond the gear I've had since high school.

In the same auction, I ended up with an old Bryston amp (4B NRB) and preamp (0.5B). The amp had one dead channel, which is the risk of buying at auction. Much to my amazement, Bryston honored its 20-year warranty and fixed it. All it cost me was some shipping. Incredible! Bryston made a fan for life with that surprise. Mark Levinson now has the same opportunity... :)
yamezxx OP
5 posts
 
Hi again everyone. I eventually did find a PLS-151 power supply on eBay, but without the cable that goes between the power supply and the preamp. So my search has continued. I have been totally unable to locate replacement connectors to have a new cable created.

But then this popped up on eBay: http://www.ebay.com/itm/320809490701?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649#ht_528wt_1139

Is this what I need? Or is this the cable that goes from the power supply to the wall? The seller hasn't responded to my inquiries, and I don't want to let this slip by if it's the right one. Any tips are greatly appreciated. Thanks!
yamezxx OP
5 posts
 
Not sure what happened with the link, but it's eBay item number 320809490701.

Try this link instead.

Thanks-
yamezxx OP
5 posts
 
Thanks, Al. I appreciate the quick response. Yes, the preamp has been patiently collecting dust on an old bookshelf, much to my wife's frustration. I can't wait to get it humming again. Cheers!
yamezxx OP
5 posts
 
Well, darn. The seller has apparently cancelled the auction, and s/he can't email so I can't find out why.

If anyone has any other ideas for finding a cable or the connectors, I'd love to hear them. Cheers, James
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