Double Bearing Pivot suspension
The key to tonearm quality is the sensitivity and stability in retrieving
delicate signals, for which the bearings are the determining factor. The
ZA12 employs specially designed “Double Bearing Pivot suspension” for
vertical suspension, (which supersedes even two sets of fine radial bearings,
installed SA-1.2B).
Schematic in this photo is exaggerated Illustration to show you inner
structure of Double Bearing Pivot, extracting inside parts to outside, on
purpose.
Thanks to this ultra-fine precise suspension, you would enjoy extensive
reproduction sound to limit-less high frequency, even from very base low
sound.
Counter weight shaft damping
To damp whole movement of tonearm-wand, counter weight shaft
composes of 2 pipes, brass-pipe inside and Delrin (Dupont-Plastic) pipe out
side, which is connected to ZA-12 main body via outer rubber ring, through
rubber adhesive.
The rectangular arm-wand is machined from a solid aluminum block
having an advantage in rich and tight bass reproduction. As bass sound is
mainly recorded in the horizontal plane of the groove, the low resonance
frequency of the ZA12 will give excellent low bass reproduction.
Tonearm wires run through separate aluminum tubes inside the arm so that
stereo separation is maximized.
The geometry of the ZA12 is chosen to give excellent sound for all types
of music, for old classical recordings, and new audiophile recordings. The
curve fits nicely between the Stevenson geometry (good for classical) and
Lofgren (good for modern audiophile recordings).
- Total Length: 416mm
- Effective Length: 322mm
- Spindle to pivot distance: 310mm
- Overhang: 12mm
- Offset Angle: 22.25°
- Cartridge weight range: 5-60g
- Total net weight: 995g
- Height adjustment range: 19-35mm (from armwand centerline)
- Internal lead wire: OFN 4N Copper