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JMW 10 Tonearm Height Adjustment on Classic 1

I have a Classic 1 with the motor in the back left corner. It has the JMW 10 arm, and a non-height adjustable base. Even in its lowest position, the arm is just barely level with no mat on the platter, and there's no way I can get it into a "tail down" position. It seems odd to me that the table/arm combo would be designed this way, since there is no VTA adjustability except for "tail up". I know how to adjust the height of the arm, and I also have the bushing adjusted as high as it will go in the arm, effectively lowering its position. Anyone know of another way to adjust this arm, or is there a workaround if some sort? I know I can shim the cartridge (or use a mat), but I don't prefer either of these approaches, and it doesn't seem like they should be necessary. The cartridge is a SS Zephyr Mk II, but this is the case with other cartridges I've had on the table as well.

Thanks! Tom

3 comments

Comments (3)

Brf

Dec 10, 2023

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The tonearm sits on a circular riser disc. You can remove the disc and mount the arm directly on the plinth, or replace or modify the disc with one with a lower profile.

softrideguy

Dec 11, 2023

Replying to

Thanks, Brf. I assume you're referring to the black disc that's resting on the plinth in this pic, correct? Anything special about it if I were to make a replacement (material, etc.)?

Brf

Dec 11, 2023

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Replying to

Yes, that's the disc. The material is made from delrin. You can also have one fabricated out of brass, stainless steel, ebony, copper, carbon fibre etc. or you can have your existing one sanded down.