I know of a small screw on the bottom of the arm tube, just behind the SME collar. The wiring appears correct at first sight. Although it appears that my TT is not stock - one of its previous owners removed the built-in phono cable and installed a set of RCA plugs. I remember receiving a very warped record and the OM30 tracked it absolutely fine without jumping before I returned the record. I wouldn't take the resonance calculation too seriously - in practice, high-compliance cartridges usually work fine on medium-mass arms. However, I think we can assume it's medium-mass. The arm is very similar to the Rega R, although it looks a tad longer to me. I'm not very practical, so I can't see myself being able to fix mine. I took some internal photos that show the wiring paths - I can post them here, if you're interested. It is a beautiful turntable but I don't use it these days as it has an intermittent noise issue that is probably related to grounding. What other cartridges will be a good match for this arm? I guess MCs are out for the time being given the hum problem. I thought about using a spare Ortofon 2M Red I have lying around, but according to the resonance frequency calculator, this will put the resonance frequency close to 7 Hz which is a tad low. It currently has a Shure M70B cartridge installed which I don't like at all, it sounds very dull. The hum is very faint I can only hear it when listening through headphones and the moment the needle touches the record, it's completely obscured by the surface noise. The TT works beautifully, but it has a slight problem with hum.

The geometry of the arm is pure Rega - mm mounting distance and 15mm overhang. The tonearm is apparently made by Acos and is virtually identical to Rega R except for the antiskating arrangement - not a bad thing, really, given the problems with antiskating belts on the Regas. The base is made of wood and the top plate is brushed aluminum. Board index Hardware Turntables and Tonearms. Username: Password: Remember me? Please login or register an account.

Sme tonearm plug diagram