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Re: DC Motor source?

Posted by Ephraim (A) on January 1, 2002 at 09:51:58

In Reply to: DC Motor source? posted by DigitalDevil on January 1, 2002 at 08:15:09:

Depends what you need.Do you need a whole kit or can you build everything yourself if you purchase only the bare motor?On which type of turntable do you want to mount it?
The www.teresaudio.com site sell the whole complete set for $375 plus shipping but it is compatible only as a stand alone unit.Look them up.Their motor is sourced from Maxon of Switzerland and the catolog number appears in their website. Maxon DC motors are sold by the company or their distributors. The motors which are relevant for turntable use are #110189( the one sold on the teres site),the
2326-942-12-111-050 and the 2326-949-12-111-050.These last 2 models are a few years old(about 4-5 yrs).The 949 version is the best of the three.You will need a simple regulator like the LM338 to obtain perfect stability of the speed.You will also need a precision pulley.
There are two excellent articles on the subject in two old magazines of Sound Practices, #10 and #11. There is also lots of info on the teres site if you have the patience to go through all the relevant emails.
I purchased the 942 version as a bare motor from the agent in Israel(that is where I live), and a very sophisticated variable stabilized DC power supply from a junkyard for peanuts.The teres guys(Chris Brady)sold me one of their excellent pulleys which I fitted on my motor.
The price of these motors(the 942 which I purchased- and the type which teres use) in Israel is around $85.If you decide to build your own and have trouble sourcing a motor, email me and I will try to help you out.The price of shipping from Israel is relatively cheap.
Have fun.

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