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Lenco and Garrard external ac power supply

Been thinking about this recently...Does it even make sense to try to find someone willing to build a power supply for turntables such as the Lenco L75 or Garrard 301 when they were made to just be plugged directly into the wall ac in the first place??

Loricroft makes ones for the 301 that convert ac to dc then back to "perfect" ac again which is what something like a Pure Power ac line conditioner/regenerator does. The neat thing about the Loricroft is that you can apparently adjust the 301's speed with it. It would be trick to find something like that for a Lenco 75 that was not so expensive.

PS audio used to make some big line re-conditioners that did the same sort of thing I think back in the day but I don't know if they are making the same equipmnet still. Furman and a couple others I think do similar things also.

What would be neat would be to find a ac regenerator that you could use to control the speed of either a 301, 401 or Lenco 75. Since they are all AC and can run at 110 or 220 volts maybe its possible, I don;t know but I know the Loricroft controller is way way expensive is it really worth $4000 bucks?? Thats almost as much as a restored 301 or top Lenco....geesh

Maybe you could just save the 4000 bucks and build one??/ Could it really be that tough?..
jeremy72
lewm
13,012 posts
 
I noticed that. Still on the drawing board, I think. Thanks to Vetterone, I can conceive of building one from a frequency generator (saw a very cheap solid state module on eBay with a built-in digital read-out) driving an amplifier that can push ca 120V into whatever is the load of the Lenco motor. (I would need to measure that.) Might be fun to try that.
gilles130
128 posts
 
It has been told on lenco heaven that it was mainly for convenience when used with a PTP,as you can change speed at distance.For the sound not a great difference so not a replacement unit for the loricraft.
lewm
13,012 posts
 
"It has been told on lenco heaven that it was mainly for convenience when used with a PTP,as you can change speed at distance.For the sound not a great difference so not a replacement unit for the loricraft."

Dear Gilles, I don't get your point. If the motor controller is properly designed to match the motor it is controlling (and this is a big "IF"), then the motor controller ought to confer all benefits at once. If the Lenco Heaven controller is badly designed to work with a single-phase induction motor (e.g., the Lenco motor), then I do see your point, but I cannot imagine that the guys on that forum would be pursuing such a goal. In fact, I believe the Garrard motor is a 2-phase induction motor. (Doesn't Garrard use a capacitor to split the AC phase?) Which has always made me wonder whether the Loricraft controller is properly matched for use with the Lenco motor.
gilles130
128 posts
 
One of the answer is there
http://www.lencoheaven.net/forum/index.php?topic=2042.1050
There is the answer from jlovey and his yoda lenco.
Go down the page to find jlovey's answer and some others.
lewm
13,012 posts
 
OK. I read what Jlovey wrote. He is saying that the main benefit of the Sanders controller in his opinion was the convenience of changing speed. But he does not say there are NO other benefits, merely that he is not overwhelmed by any improvement in sonics. But where does it say that the Loricraft controller will work sonic miracles with the Lenco motor? That's the part of what you wrote that induced me to comment. Indeed, it may well be that the single phase induction motor can benefit only minimally from any sort of controller. But you read what Steve Dobbins wrote: there likely is some voltage and some frequency which will cause the Lenco motor to run its smoothest and to therefore sound better because of reduced noise. We don't know what that magic combo is. Much more is known about maximizing performance of the Garrard motor, as Steve points out and as Loricraft is testimony to. Loricraft are rather opaque about the operation of their controllers, so one has no way of knowing for sure how they would work with Lenco.
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