Micro Seiki

BL-91

Turntable

Main Details
Maker Micro Seiki Brand
Function
Form Factor Tabletop
Date Produced 1979-1983
Notes Micro Seiki BL-91
2-Speed Belt-Drive Turntable (1979-1983)

Description
Features a massive, thick, 12.2 inch platter, employing special alloy bearings machined and polished with techniques usually reserved for turbojet engines.

Micro Seiki engineers devised an exclusive oil-bath damping system to support the entire rotating assembly in complete isolation from all mechanical resonances.

A precision-ground drive belt connects the rotating assembly to the brushless, servo-controlled motor with total isolation from motor generated vibration.

In fact, the BL-91 (L) is probably the smoothest, most vibration-free device of its kind ever built.

Specifications
Drive system: belt drive

Speeds: 33.33 and 45rpm

Speed variation: user variable to +-6%

Wow and flutter: 0.025% wrms

Signal to noise ratio: 75dB

Drive motor: 4-pole, 6-slot outer rotor brushless type, servo controlled

Platter 31cm 3.5kg incl rubber mat

Base construction: multi-laminar natural wood finished with hand rubbed natural ebony

Weight: BL-91 16kg, BL-91L 22kg
Additional Specifications
Speed Select 33⅓ rpm
Speed Select 45 rpm
Drive Type Belt Drive

Comments

Login or Register to post a comment