Mounting Hole Spacing: 0.500″(12.70mm) center to center (worldwide standard cartridge mount spacing)
Mounting Hole Diameter: 0.103″(2.60mm)
External Dimensions: 0.14″(3.6mm) thick, 0.74″(18.8mm) wide, 0.96″(24.4mm) long
Distance: Center of Mounting Holes to Back: 0.66″(16.8mm)
Distance: Center of Mounting Holes to Front: 0.30″(7.6mm)
Range of effective vibration absorption: <100Hz to >20kHz
Ingredients: Precision Machined Solid Aluminum Case, Pure Titanium Cantilever Beams, Pure Silicon Damping Oil
100% Non-Magnetic construction, 100% Precision Made in USA
To install the AudioMachina V8, simply remove your cartridge and insert the V8 between the cartridge and the headshell, OR, if the headshell is flat on top, mount the V8 to the top of the headshell, allowing the tonearm height to remain unchanged. Just be sure that wherever it is mounted, the V8 is able to make perfectly flat contact with the flat horizontal surface of the headshell, to eliminate any possibility of instability or added vibration. Then re-mount the cartridge using longer mounting screws, re-level the tonearm(if necessary), and re-balance the tonearm. Because of the specific orientation of the internal Titanium beams relative to the cantilever vibration, the preferred orientation of the V8 is for the AM logo to face upward and the tip of the logo to point forward towards the needle. But you are free to try it other ways if desired.
An assortment of M2.5 cartridge mountings screws is included, along with nuts and washers if needed, plus a quality screwdriver. The hardware is high-quality, non-magnetic, corrosion-resistant stainless steel. The mass per pair (2 pieces) is: 10mm=1.0g, 12mm=1.1g, 14mm=1.2g, 16mm=1.3g, 20mm=1.5g, Nuts=0.4g, Washers=0.2g.
Because of the added mass of the V8 (and longer screws), the subsonic cartridge/tonearm resonance frequency will be shifted downward slightly, usually <1Hz. There are several online resonance frequency calculators which allow you to calculate your particular system's resonance frequency, or you can buy a test record which has subsonic test tracks to test your system directly. If your system is nearing the lower end of the acceptable range of subsonic resonance (<8Hz), consider a cartridge with lower compliance (<15 at 10Hz, or <9 at 100Hz), a cartridge with lower mass, or a tonearm with lower effective mass. All will drive the subsonic resonance higher in frequency. Excellent lower-compliance cartridges are made by Ortofon, Einstein, Koetsu, and Miyajima, or the Denon DL-103 series.
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