Micro Seiki BL-91
2-Speed Belt Drive Turntable (1979-83)
BL-91 came fitted with MA-701 tonearm
BL-91L came fitted with a universal arm mounting plate
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.
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
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Micro Seiki Belt Drive Turntables
Micro Seiki BL-91 / BL91 owners manual, service manuals and schematics are for reference only and the Vinyl Engine bears no responsibility for errors or other inaccuracies. The PDF files are provided under strict licence. Reproduction for financial gain is strictly prohibited. This website is not affiliated with or sponsored by Micro Seiki.