LUXMAN LMC-2

Commentary

The MC type cartridge was announced as the second series of the centralized mounting structure cartridge using LMC power generation system and block chassis.

The LMC (Linear Magneto-field Cross) power generation mechanism is adopted for the power generation system. The unique structure realizes ultra-lightweight, high-efficiency and linear power generation. With this system, the total weight of the power generation system is reduced to 1/8 of the conventional system, and the power generation efficiency is 5 times higher.
In the LMC power generation system, two ring-shaped samarium-cobalt dual magnets aligned coaxially with the direction of the cantilever generate an ideal magnetic field that is uniform in the forward direction of 360 ° around the cantilever without using a yoke. By this method, the magnetic flux can be made perpendicular to the entire surface of the coil without loss, thus achieving both high efficiency and linearity.

The cantilever uses a titanium taper pipe.

Natural diamond is used for the material of the stylus, and by making it a semi-line contact type with excellent tracing capability, elastic deformation of the record is minimized and traceability up to high frequencies up to 60 kHz is realized.

It adopts a concentrated mounting structure with a unique block chassis support structure.
In conventional MC cartridges with low power generation efficiency, the power generation system is heavy. Therefore, the monocoque structure was used to support the MC cartridge by the case itself without a chassis to fix it. However, if a lightweight resin case is used in this method, harmful resonance occurs and coloring occurs in the reproduced sound.
With the LMC power generation system, we have succeeded in making the power generation system ultra-lightweight, making it possible to have sufficient weight and strong structure for the support part. To solve this problem, a block chassis is formed using a vibration-proof metal with excellent damping characteristics to fix the entire vibration system in the axial (cantilever) direction, and all other parts are connected directly to the block chassis in a centralized mounting structure.
This block chassis is the only structure that fixes the vibration system with this structure. The cover is not related to the support structure, so that the coloring of the sound caused by deformation and squeal is prevented.
The LMC-2 uses a zinc alloy die-cast block chassis for this part.

In the vibration system, the vibrator point is made clear by stainless steel wire with excellent linearity, and the damper load, which is non-linear operation, is reduced by linearly absorbing the needle pressure load.

Model Rating

Type	MC Cartridge
Power generation system	Moving coil type
Cantilever	Titanium Taper Pipe
Stylus	0.15 mm Square Semi-Line Contact Type Natural Diamond
Magnet	2 x Samarium Cobalt
Chassis	Zinc alloy die cast
Output voltage	0.2 mv (1 khz, 5cm/sec, horizontal)
Channel balance	0.5 dB or Less (1 kHz)
Crosstalk	25 dB or Less (1 kHz)
Compliance	10x10-6cm/dyne(100Hz)
Frequency characteristic	10 Hz to 60 kHz
Needle pressure	1.5g ± 0.2g
Impedance	6 Ω
Recommended load impedance	Head amplifier : 40 Ω or more Step-up transformer : 3 Ω or more
Dead weight	5.8kg
Needle exchange	New (¥ 20,300)