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Author
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Topic: Lexicon Power Supply
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Terry Hickey
Member From: Arroyo Grande, California, USA
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posted 05 March 2005 12:36 PM
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Hello,
I bought a Lexicon MPX 100 on ebay and the seller realized he did not have the original power supply which he thought he had. His question to me is whether I still want the unit. I know it is in great shape. Does anyone know if a standard power supply adaptor will work as well as the factory designed power supply adaptor? He is willing to discount the unit to make up the difference in cost or refund the cost. I want the unit but I don't know about the power supply question.
Thank you very much.
Terry Hickey |
Jerry Roller
Member From: Van Buren, Arkansas USA
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posted 05 March 2005 01:22 PM
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Terry, I believe it takes a 9 volt AC @ 1 amp.
Jerry |
Vernon Hester
Member From: Cayce,SC USA
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posted 06 March 2005 12:08 AM
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You can order a Lexicon P/S from Lexicon for about $20. (13.10 + shipping.)
MPX-110 Power Supply (120V,9VAC,1.9A) PN: 470-12754 This Power Supply is also compatible with the following discontinued Lexicon Products: MPX 100, MPX-R1, LXP-1, LXP-5, Alex, Reflex, Vortex, Jamman .
Vern |
Dave Boothroyd
Member From: The Malvern Hills
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posted 06 March 2005 01:53 AM
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Make a note of the "AC" bit, Terry. Lexicon are unusual in that they put the rectifier/regulator and smoothing circuits inside the unit instead of relying on the power supply to do the job.
That may be one of the reasons they sound good.
An ordinary power supply will not work. They put out Direct Current, like a battery.In emergency, I have run Lex units from a power supply wall-wart after stripping the rectifier out, but I would not recommend this unless you know exactly what you are doing! ------------------
Cheers!
Dave [This message was edited by Dave Boothroyd on 06 March 2005 at 01:53 AM.]
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Terry Hickey
Member From: Arroyo Grande, California, USA
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posted 06 March 2005 08:50 AM
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Thanks for great Info. Vernon I did find the part # your talking about at Lexiconpro.
Thanks again, Terry |
David Mason
Member From: Cambridge, MD, USA
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posted 06 March 2005 01:32 PM
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Those generic Radio Shack variable voltage power supplies can come in handy, but what Dave Boothroyd says is true. I really try to get wallwarts for defunct equipment from the original manufacturers or at least do some research, because specs do vary. I think it's Fostex and Dunlop that even have the polarity on the pin and barrel reversed? If you fry up your Ebay treasure because of carelessness, there's not much you can do but pop another stupid pill and take up something safe like b@njo. |
Dave Grafe
Member From: Portland, Oregon, USA
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posted 06 March 2005 02:42 PM
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Cheap wall warts (and more than a few expensive ones) introduce noise into the AC line, just like cheap lighting dimmers do. This is often the source of a mysterious buzz in the rig, particularly if you have a single coil pickup involved. |
Mike Winter
Member From: Oregon City, Oregon, USA
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posted 18 June 2005 10:23 AM
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Tip: If you are missing power supplies, go online to the particular unit and look up the specs. Write them down and head off to the nearest Goodwill along with your piece of gear. They always have a large supply in a box somewhere. You can match the specs and often-times can find one that will work for a couple of bucks or so. I needed one for my Boss TU-2 tuner, and I found one that matched everything except the polarity. I bought it for $2.00 took it home and cut and switched the wires at the jack end...works just like new.  |
Jack Stoner
Sysop From: Inverness, Florida
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posted 18 June 2005 12:26 PM
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Whether a device has the AC to DC filtration and/or the regulation built into the unit or the external power supply makes no difference. However, you must have whatever is required by the equipment vendor to work properly. e.g. if it requires 9 volts AC, that is what you need, if the unit requires 9 V DC it gets a little trickier as some have better filtration (better DC voltage) than other. If it requires a regulated DC voltage (such as some older Ibanez units) then that is what you need and again there are units with poor regulation and ones with proper regulation. Some even require multiple voltages and on those you are pretty much stuck with the vendor's power supply.Obviously plarity on DC units, and matching the proper connector are also issues. |
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