Audiotechnica OC9MLII High, Low or Med Compliance?

I've had good results hanging an OC9ml/1 on medium mass arms including a Linn Basik LVX, a Premier FT-3 and also a higher mass VPI JMW-12.

Audio Technica, like several other Japanese manufacturers, specify the dynamic compliance at 100HZ. As your link above suggests, of most interest is the compliance at resonance (around 10Hz) which will be somewhat higher.

For instance Denon state the compliance of the 103 is 5x10-6cm/dyne which seems quite low. However practical resonance tests suggest the compliance is closer to 10cm/dyne(10-6)around resonance. The graph of compliance vs frequency published in Denons manual confirms this.

I'd expect the dynamic compliance of the OC9 to be more like 16-18cm/dyne(10-6) at resonance (ie around 10Hz).

As far as I can tell, when the units are crunched out, 1µm/mN equals 1cm/dyne(10-6) - ie those two terms are interchangeable. I've also seem cm/dyne(10-6) expressed as CU.

Thanks all. Would it be accurate to conclude that the OC9MLII is a medium to high compliance based on the above?

"Would it be accurate to conclude that the OC9MLII is a medium to high compliance based on the above"?

Yes.

I replaced my Linn Arkiv with an OC9II on a Linn Ekos (a medium mass arm), and an interesting thing happened. On any album with even the slightest warp (most), the woofers on my Linn Keltiks pulse in and out wildly which severely saps amplifier power. I asked my dealer why and he said it was a compliance incompatibility between the Ekos and OC9.