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Dynamic Compliance

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Dynamic Compliance

Postby MACEBANYON » 18 Dec 2012 17:46

How do you figure dynamic compliance of a cartridge?
I could find no info on this for my Shure M91ED.
I e-mailed SHURE and below is there response.

"Static compliance - 0.00000025 cm per dyne of force"
Can these numbers be used to figure dynamic compliance, _ x10-6cm/Dyne?
Music is your own experience, your thoughts, your wisdom. If you don't live it, it won't come out of your horn. ~Charlie Parker
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Re: Dynamic Compliance

Postby ipapb » 18 Dec 2012 19:01

MACEBANYON wrote:"Static compliance - 0.00000025 cm per dyne of force"
Can these numbers be used to figure dynamic compliance, _ x10-6cm/Dyne?

Yes, it is 25 x 10-6 (at 10 Hz).
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Re: Dynamic Compliance

Postby MACEBANYON » 18 Dec 2012 19:37

Thank you, ipapb
Music is your own experience, your thoughts, your wisdom. If you don't live it, it won't come out of your horn. ~Charlie Parker
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Re: Dynamic Compliance

Postby lini » 19 Dec 2012 06:01

Actually not - as they stated it, that would be 0.25 x 10^-6 cm/dyn. Or in other words: There are two 0s too many in that spec from Shure...

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Re: Dynamic Compliance

Postby phonomac » 19 Dec 2012 09:44

Just to point out - the figure from Shure is static compliance, you still don't have a number for dynamic compliance.

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Re: Dynamic Compliance

Postby ipapb » 19 Dec 2012 19:04

lini wrote:Actually not - as they stated it, that would be 0.25 x 10^-6 cm/dyn. Or in other words: There are two 0s too many in that spec from Shure...

Yes lini, it's right : 25 x 10-6 = 0000.25 ; error from Shure, imo. I don't think the compliance is 0.25 !
phonomac wrote:the figure from Shure is static compliance, you still don't have a number for dynamic compliance.

Other error ? :D
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Re: Dynamic Compliance

Postby MACEBANYON » 19 Dec 2012 21:44

Well, OK then.
Does anyone know the dynamic compliance of a Shure M91ED?
Music is your own experience, your thoughts, your wisdom. If you don't live it, it won't come out of your horn. ~Charlie Parker
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Re: Dynamic Compliance

Postby KonstantinT » 21 Dec 2012 13:13

Dynamic compliance is lower than static.
Most Shures of this age are medium to high compliance.
Anyway, I know at least one deck which came from the factory equipped with a medium mass arm (Ortofon AS212, 14g) and a Shure M91ED.
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Re: Dynamic Compliance

Postby ipapb » 21 Dec 2012 13:52

MACEBANYON wrote:Does anyone know the dynamic compliance of a Shure M91ED?

The M91ED track very correctly at 1 g of VTF (not at its best is beetween 1.2 to 1.5 g, but very correctly) : i think its dynamic compliance (at 10 Hz) is more than 20 cu (arround 25, imo).
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