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MoFi Geo-Disc Protractor / Pfanstiehl SFG / Clearaudio Level

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Mobile Fidelity Geo-Disc Cartridge-Alignment Gauge

The Mobile Fidelity Sound Lab GEO-DISC stylus alignment protractor makes cartridge setup easy. You will never realize the full potential of your cartridge without properly setting it up, but let's face it: Mounting and aligning a phono cartridge can be a tedious and time-consuming chore. Not with the GEO-DISC. Simply put GEO-DISC on your platter as you would a record, and align your cartridge using the simple printed graph based on the Baerwald alignment curve. It's that easy. Nobody with a turntable or vinyl LPs should be without this essential device.

Pfanstiehl Digital Stylus-Force Gauge

This is little darling has been serving our customers well for the past several years. It's designed for no-frills, accurate and reliable tracking-force adjustment. It's a snap to use and accurate to within 0.01g. Max weight is 5g.

Clearaudio Basic Spirit Level

As its name suggests, the Basic is is the perfect addition to our mid-level turntable & cartridge set-up kit. Leveling is necessary for optimal stylus-performance, and the Clearaudio Basic is perfect for the job.
MoFi Geo-Disc Step-By-Step Instructions:
  • 1. Mount cartridge in headshell but do not tighten mounting screws completely; balance arm and set recommended tracking and anti-skate forces.
  • 2. Place Geo-Disc on Turntable.
  • 3. Move your eye close to the sight-line ("A-B") and sight along the small ridge atop ("A-B"); rotate the Geo-Disc so that the ridge points directly at the center of the tonearm lateral pivot point. Then use a piece of adhesive tape to keep Geo-Disc from turning.
  • 4. To set proper overhang, adjust cartridge in headshell so that, when gently lowered onto grid ("C"), the stylus rests directly in the small indentation in the center of the white circle on the grid ("C").
  • 5. For proper offset angle, look at the front and sides of the cartridge body relative to the grid; raise stylus off Geo-Disc and twist cartridge in the headshell so that front and sides of cartridge are squared with the grid. Recheck Step #4.
  • 6. Final offset angle is achieved by sighting along line ("D-E") - the stylus shaft should appear to be in line with ("D-E"). If not, twist the cartridge to the proper position. Recheck #4.
  • 7. Tighten mounting screws. Recheck Step #5.
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