Phantom + A90 question


How ahve users of this combination dealt with the inability of the Graham headshell to touch all three contact points on top of the A90? I'm considering the use of a carbon fiber shim from Millennium, pre-drilled with holes for the cartridge screws, between the cartridge and headshell to provide full contact. Think it's needed? Any other solutions? Is it even a problem?

Thanks,
Bill
wrm57
The mounting issue with the Cadenzas, as with the A90, is that the rear-outside point just hangs in space. Definitely the meeting of some quirky designs from both Graham and Ortofon.

My Ortofon dealer recommended sanding the raised bar and points off the plastic-bodied cartridges like the Cadenzas. He says it's easily done using adhesive sandpaper on a flat surface, although I'd be a little wary. The metal-bodied A90 is an altogether different story.

I think I'll try using one of these spacers. They're of varying thicknesses and I'll experiment. Carbon fiber may introduce its own sonic signature, but at least that rear point will be supported. I'll let you know.
Isn't the cadenza the same body type as the Jubilee? This is the first I have heard of a quirky design...
Isn't the cadenza the same body type as the Jubilee? This is the first I have heard of a quirky design...
Any cartridge (or headshell) with a non-flat mounting surface is potentially quirky. For a manufacturer to offer two such models isn't less so, it's doubly so.

Owners who wish to reduce cartridge/headshell contact can use aftermarket, point-contact spacers. The 3-pointed ones from Mapleshade can be fitted with the single point toward the front or the rear, which doubles the chances of a fit. Accordingly, they may be regarded as semi-quirky.
I am going to take a closer look at my A90 mount. It didn't even think it was an issue. Perhaps a can of worms is now open, perhaps it's a non issue. My sound has been fantastic with the Supreme/A90 combo and the Supreme/Coralstone combo. I use a Foz for azimuth setting.
I don't believe I have an issue with my Jubilee mount, azimuth looks spot on to me and the sound has been great for 3 years...it has been so long I can't recall how I dealt with it but do remember mention of it in the mounting instructions from Ortofon. Having a hard time remembering what I had for breakfast for that matter. LOL!