LUXMAN PD131
¥ 95,000 (Released in September 1975)
Commentary
An armless player developed as a subordinate model of PD121.
The biggest difference from the PD121 is the motor of the drive part. The PD131 uses a direct drive type 8-pole 24-slot brushless DC servo motor.
Also, the turntable has been changed to match the motor.
The turntable is made of aluminum die-cast.
The PD131 is designed to be as heavy as possible while taking into consideration not only the required inertial mass but also the resonance and strength of the motor bearings and parts.
A bayonet mount type arm base is adopted for the arm base, and it is designed so that various arms can be replaced with one touch.
As for the arm base, only for SME is included as a standard, and there are other variations such as general use, exclusive for orthophone, exclusive for other, and unprocessed arm base.
The chassis uses an aluminum die-cast chassis of sufficient strength and weight, and the top panel uses a 3 mm anodized aluminum panel, which is held firmly in place with rubber and wooden frames for damping.
A 3-layer structure insulator is used for the leg part.
In this insulator, the spring is dumped with rubber and the entire body is dumped with silicon grease to achieve both the compliance and braking necessary for vibration isolation.
4 mm thick heavyweight acrylic is used for the acrylic cover.
For the turntable sheet, we have adopted a material equivalent to the chamois leather with good adhesion.
The strobe displays the number of revolutions by flashing a black light pulse and also identifies the power supply frequencies by color (60 hz : yellow, 50 hz : yellow-green).
The power switch uses a micro switch.
Model Rating
| Type | Record player |
| <Turntable portion> | |
| Drive system | Direct drive system |
| Motor | 8-pole 24-slot brushless DC servo motor |
| Turntable | 30 cm aluminum die-cast, 2 kg |
| Number of revolutions | 33 1/3rpm, 45 rpm |
| Rotational speed adjustment range | ± 4%, each rotation speed independently adjustable |
| Signal-to-noise ratio | 60 dB or more |
| Wow flutter | 0.03% or less (WRMS) |
| <Attachment device> | |
| Acrylic cover | 4 mm Thick Laminate Detachable, with free stop hinge |
| Insulator | Three layered structure consisting of spring, rubber and grease Height Adjustment Range : 10 mm |
| Mirror strobe | Speed display system using black light |
| <General> | |
| Pwer | 100 VAC, 50Hz/60Hz |
| Power consumption | Permanent : 5W Startup : 14.5W |
| External dimensions | Width 472x Height 160x Depth 372 mm (Hinge Part : 17 mm) |
| Weight | 12kg |