Pioneer MU-41D
¥ 26,500 (around 1972)
Commentary
This is a phono motor that uses the rotating parts of Pioneer record players PL-41D and PL-41W.
The motor uses an 8-pole hysteresis synchronous motor in which the rotation speed is reduced to 1/2 and the rotation ratio is reduced to reduce vibration and uneven rotation.
The turntable is made of 2.2 kg, 31 cm aluminum alloy die-cast to improve the processing accuracy of the pulley and reduce uneven rotation.
The suspension of the motor has a double structure of rubber and spring.
A polyurethane belt is used for the belt, and thickness unevenness is reduced to less than 5/1000mm by unique processing.
Comes with an arm mounting gauge for easy mounting of various tone arms with effective length of 195 ~ 365 mm.
Model Rating
| Type | Phono motor |
| Motor | 8-pole hysteresis synchronous outer rotor type |
| Drive system | Belt drive |
| Turntable | 31 cm Diameter Aluminum Alloy Die-cast (2.2 kg) |
| Number of revolutions | 33 1/3, 45 rpm |
| Uneven rotation | 0.07% or less (WRMS) |
| S/N | 52 dB or more |
| Attachment mechanism | Belt protection device |
| External dimensions | Width 340x Height 139x Depth 340 mm |
| Weight | 5.4kg |