Luxman LMC-1
A high-efficiency moving coil phono cartridge with a yokeless magnetic system and a sapphire cantilever.
Overview
The Luxman LMC-1 is an MC type cartridge made for high-fidelity vinyl playback. It uses Luxman's own Linear Magneto-field Cross (LMC) power generation system, which needs no yoke. Two coaxial samarium-cobalt ring magnets create a uniform 360° magnetic field around the cantilever, and that makes signal generation highly efficient and linear. The cantilever is a 0.3 φ sapphire rod. The stylus is a 0.12 mm square semi-line contact tip of natural diamond, built to trace highs up to 60 kHz. Everything sits on a machined SPZ anti-vibration zinc alloy block chassis with a concentrated mounting structure, which keeps resonance and coloration down.
Specifications
| Output voltage | 0.1 mV (1 kHz, 5cm/sec) |
| Channel balance | 0.5 dB or Less (1 kHz) |
| Crosstalk | 28 dB or more |
| Compliance | 10 x 10^-6 cm/dyne |
| Frequency characteristic | 10 Hz to 60 kHz |
| Needle pressure | 1.5g ± 0.2g |
| Impedance | 4 Ω |
| Recommended load impedance | Head amplifier : 40 Ω or more, Step-up transformer : 3 Ω or more |
| Dead weight | 5.0 g (audio-database.com), 5.1 g (hifi-wiki.com) |
| Power generation system | Linear magneto-field cross power generation system |
| Cantilever | 0.3 φ Sapphire Rod |
| Stylus | 0.12 mm Square Semi-Line Contact Type Natural Diamond |
| Magnet | 2 x Samarium Cobalt |
| Chassis | SPZ (Anti-Vibration Zinc Alloy) Milling |
| Original price | ¥ 54,000 (audio-database.com), approx. 750 DM (hifi-wiki.com) |
Design
The LMC-1's power generation system cuts the total weight of the magnetic assembly to 1/8 that of conventional designs, and efficiency is five times higher. The two ring-shaped samarium-cobalt magnets produce a uniform magnetic field perpendicular to the coil surface with no flux loss, so the output stays linear. The block chassis is machined from SPZ anti-vibration zinc alloy. It fixes the whole vibration system axially, and every component connects directly to it in a centralized mounting structure. The shell mounting surface is mirror-finished to prevent resonance. The support system uses stainless steel wire to absorb needle pressure linearly, which minimizes non-linear damping effects.
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