Designer:
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Jonathan Carr
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Builder:
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Yoshinori Mishima
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Type:
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Medium weight, medium compliance, low-impedance moving coil cartridge
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Stylus:
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Lyra-designed long-footprint variable-radius line-contact nude diamond (3um x 70um), slot-mounted
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Cantilever system:
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Solid boron rod with short one-point wire suspension, directly mounted into cartridge vertical pillar
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Coils:
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2-layer deep, 6N high-purity copper, square-shaped chemically-purified high-purity iron former, 5.4ohm self-impedance, 9.1uH inductance
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Output voltage:
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0.5mV@5cm/sec., zero to peak, 45 degrees (CBS test record, other test records may alter results)
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Frequency range:
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10Hz ~ 50kHz
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Channel separation:
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35dB or better at 1kHz
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Compliance: Approx. 12 x 10-6cm/dyne at 100Hz
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Vertical tracking angle: 20 degrees
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Cartridge body:
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Two-piece composite structure, each piece controlling resonances within the other: Vertical "pillar" is one-piece machining from spring-grade phosphor bronze solid billet, with reduced-surface higher-pressure headshell contact area; horizontal "body" is one-piece machining from high-loss polymer, with threaded brass inserts for mounting screws
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Cartridge mounting screws:
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2.6mm 0.45 pitch JIS standard
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Distance from mounting holes to stylus tip:
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9.5mm
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Cartridge weight (without stylus cover):
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9g
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Recommended tracking force:
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1.65 ~ 1.75g
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Recommended load directly into MC phono input:
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95.3ohm ~ 816ohm (determine by listening)
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Recommended load via step-up transformer:
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5 ~ 15ohm (step-up transformer's output must be connected to 10kohm ~ 47kohm MM-level RIAA input, preferably via short, low-capacitance cable)
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Recommended tonearms:
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High-quality pivoted or linear (tangential) tonearms with rigid bearing(s), adjustable anti-skating force, preferably VTA adjustment
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