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DC Turntable Motor Speed Controller
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Poll Question: Would You Buy One To Replace An Existing DC Motor Speed Controller?
Vote Poll Choice Votes Poll Statistics
36 [78.26%]
4 [8.70%]
6 [13.04%]

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Graham Slee View Drop Down
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    Posted: 15 Feb 2013 at 4:44pm
Suggested by my good friend Len Gregory (The Cartridge Man, Croydon)

Len uses some turntables that use DC motors, and they have a DC power supply with a switch to change from 33rpm to 45rpm, as well as some trimmers to set the speed up. He doesn't use the 45rpm but a lot of people do.

He told me he wasn't well pleased with the 'speed boxes' he had and asked me to make him a prototype that could do a better job of keeping the speed stable.

I of course obliged although it took me a few months to be able to get round to it.

Len was quite happy with the 'ugly' prototype I sent him and told me his results in using the said device were much better...

In his words (roughly translated) "you would think it wouldn't make all that much difference, after all, it's only spinning the platter round and with the weight of the platter and its inertia you'd think it should be just a case of supplying the correct voltage and any similar item can do that, but this thing also improves the sound in every way"

So, I thought, should I dare to make these things for sale?

I answered myself by asking "would anybody want one?"

And that's why I'm asking you good folk in this poll. Any comments gratefully received.

Graham
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Points: 6197 		Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 15 Feb 2013 at 5:12pm
I'd be interested if I had need of one, but my three decks are all Direct Drive . . . Ermm

Edit: A lot of manufacturers produce their own "improved" PS/controller as an upgrade path. I would imagine that this would be the path most folk would go - even if the performance of the GSP box outstripped the OEM one. For those who have already discovered GSP it would be a no-brainer. Whether this would be economic to produce is definitely not something I can answer . . .


Edited by morris_minor - 15 Feb 2013 at 5:22pm
Bob

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Accession MC/Enigma, Accession MM, Reflex M, Elevator EXP, Era Gold V
Solo ULDE, Novo, Lautus USB and digital, Libran balanced, CuSat50
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Points: 2397 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ICL1P Quote  Post ReplyReply Direct Link To This Post Posted: 15 Feb 2013 at 5:24pm
It's a difficult one to answer.  A DC motor with switchable speed control is something I've though about, because it's such a faff moving the belt from one pulley to another to play 45s.  So, if I decided to go that route sometime, I would potentially be interested, but having just purchased a second turntable (same as one of Bob's) maybe I'll just stick to using that for 45s because it's all automatic.

I think I'll probably have to vote that I don't have a need.
Ifor
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morris_minor View Drop Down
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Points: 6197 		Post Options Post Options   Thanks (0) Thanks(0)   Quote morris_minor Quote  Post ReplyReply Direct Link To This Post Posted: 15 Feb 2013 at 5:28pm
Originally posted by ICL1P ICL1P wrote:

. . . but having just purchased a second turntable (same as one of Bob's) maybe I'll just stick to using that for 45s because it's all automatic.
You'll be surprised at how well it plays 33s too Wink.
Bob

Majestic DAC/pre-amp
Accession MC/Enigma, Accession MM, Reflex M, Elevator EXP, Era Gold V
Solo ULDE, Novo, Lautus USB and digital, Libran balanced, CuSat50
2 x Proprius + Spatia/Spatia Links
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Points: 2397 		Post Options Post Options   Thanks (0) Thanks(0)   Quote ICL1P Quote  Post ReplyReply Direct Link To This Post Posted: 15 Feb 2013 at 5:31pm
Originally posted by morris_minor morris_minor wrote:


Originally posted by ICL1P ICL1P wrote:

. . . but having just purchased a second turntable (same as one of Bob's) maybe I'll just stick to using that for 45s because it's all automatic.

You'll be surprised at how well it plays 33s too Wink.
Apparently it'll be ready for collection or shipment next week. I need to find a work related reason to go down that way again.
Ifor
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suede View Drop Down
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Points: 1202 		Post Options Post Options   Thanks (0) Thanks(0)   Quote suede Quote  Post ReplyReply Direct Link To This Post Posted: 15 Feb 2013 at 5:54pm
I'm currently using a ProJect "Speed Box II" with my ProJect TT and I'm quite satisfied but if you would be able to make one to better it I would definitely be interested, given the price being reasonable.


Edited by suede - 15 Feb 2013 at 7:20pm
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gaz View Drop Down
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Points: 45 		Post Options Post Options   Thanks (0) Thanks(0)   Quote gaz Quote  Post ReplyReply Direct Link To This Post Posted: 15 Feb 2013 at 6:09pm
i would not but my brother wouldSmile
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