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HT-464
Commentary

A DD full auto player developed from the same design philosophy as the high-performance player of Lordi following HT 860 and HT 660.

The motor is equipped with a unitorque motor based on Lordi's proprietary technology.
The Unitorque Motor is a motor which obtained perfect circular motion from the principle. It consists of a doughnut-shaped rotor magnet magnetized with 8 poles and two sets of star-shaped flat coils offset by 22 ^ 5 degrees. The torque generated by these two coils and magnets is constant at any moment. This principle is called sin2Θ + cos2Θ = 1 ". The Uni-Torque Motor also adopts a simple structure that is brushless, slotless and coreless, and has significantly improved durability.

A dedicated DC motor is used to drive the arm, and equipped with a full auto mechanism that reduces the effect on the turntable.
It is designed so that this full automatic mechanism does not interfere with manual operation.

Uses a highly electronic auto return detection mechanism that can detect returns without contact using a light source (LED), shutter, and photo sensor (Cds).

Uses a gimbal support tone arm.

The head shell uses a head shell containing glass fiber.

Model Rating
Type DD full auto-player system
Phono Motor Section
Drive system DD Full Auto
Motor Flat type commutator DC servo motor (unitorque motor)
Turntable 310 mm φ Aluminum Die-cast
Constant speed 33 1/3, 45 rpm
Speed change Electronic control system
Speed adjustment range 33 1/3rpm : + / - 3%
45 rpm : + / - 4%
(Common adjustment for both speeds)
Wow and flutter 0.03%(WRMS)
Signal-to-noise ratio 77dB(DIN-B)
Tone Arm Section
Tone arm Needle pressure direct reading static balance type pipe arm
Head shell replacement system
Effective arm length 220mm
Overhang 15mm
Tracking error 2 ゜
Needle pressure adjustment range 0 ~ 3g/1 Rotation (Direct Reading in 0.1g Steps)
Applicable Cartridge Weight 4g ~ 10g
Cartridge Section
Cartridge MM Type (MT-24)
Frequency characteristic 10 Hz to 25 kHz
Output voltage 3 mv (1 kHz, 50cm/s horizontal)
Channel balance 1dB
Crosstalk 25dB
Needle pressure 2g
Needle to be used 0.5 mil Diamond Needle (DS-ST24)
<General>
Power supply voltage 100 VAC, 50Hz/60Hz
Power consumption 5.5W
External dimensions Width 435x Height 128x Depth 375 mm
Weight 5.5kg