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Comparing Elements of Turntable Construction, Kindly requesting your help in building a turntable comparison chart.
Knowzy
post Aug 19 2008, 03:06
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Greetings HydrogenAudio.

USB turntables, as many around here are aware, range in quality from poor to decent. I'm setting out to create comparison charts detailed enough to find the gems in a sea of lightweight plastic and ceramic carts. Once the guide is more presentable, I plan to give HA an exclusive sneak preview.

What follows are the elements I'm considering for chart #3, "Turntable Construction," along with the possible values.

Is there anything else I should be considering? Are there any elements not worth comparing or combinable with other elements? Am I using correct terminology?

I greatly appreciate your informed input.
  • Drive
    • Belt
    • Direct
  • Cartridge Type
    • Ceramic
    • Moving Magnet
    • Moving Coil (no USB TT's feature these)
  • Plinth/Body (really having trouble succinctly comparing this)
    • Lightweight plastic/No isolation
    • Heavy plastic/Rubber
    • Metal/Rubber
    • Wood/Rubber
  • Anti-skate/Counterweight
    • Yes
    • No
  • Edit: Removed tonearm shape, combined counterweight with anti-skate (thanks for setting me straight Axon)
  • Mount Type
    • Half-inch
    • P-Type
    • Edit: Bayonet (thanks Axon)
    • Edit: Universal (thanks Axon)
    • Edit: Proprietary (thanks Axon)
  • Stylus Type Edit: Added more types
    • Conical
    • Elliptical
    • Spherical
    • Linear Contact
    • MicroLine
    • MicroRidge
  • Dustcover
    • Plastic
    • Cloth
    • None
  • Adjustable Feet for Leveling?
    • Yes
    • No
  • Tonearm cue?
    • Yes
    • No
  • Tonearm Auto return?
    • Yes
    • No
  • Edit: Specs (If Available) (Chart #4: Specifications)
    • Wow and Flutter
    • Signal to Noise Ratio
    • Rumble
    • Dimensions
    • Weight
    Edit: Pitch Control (chart #2) (thanks Axon)
    • +/- X%


This post has been edited by Knowzy: Aug 21 2008, 07:03
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Knowzy
post Aug 21 2008, 08:09
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QUOTE (Axon @ Aug 20 2008, 21:29) *
Wait. You don't know what I mean by "offset arm", do you?


I absolutely do now. How embarrassing!

Well, that's why I'm here- to get to know turntable construction and components well enough to make a useful comparison chart.

I went back through the models and all of them do indeed have an offset arm. Anti-skate, that's another story.

To restate it correctly: If you make anti-skate a requirement you eliminate 60% of the market.

The new list of USB TT's featuring anti-skate includes Pro-Ject's USB:
QUOTE (Axon @ Aug 20 2008, 21:29) *
For comparison, the SL-1200 clocks in at 0.025% on its spec sheet (and its speed stability is solid as a rock).

I see what you mean. Quite a bit better than any USB TT that lists its specs.

I can only imagine the what the wow and flutter are on these belt drives that omit the specs!

Very noteworthy.

Thanks again for the help and being patient while I display how badly I need it!
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