Micro Seiki BL-91
2-Speed Belt-Drive Turntable (1979-1983)
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
Please login or register a free account in the forum to download files
If you have additional documentation please consider donating a copy to our free archive.
NOTE To view PDF files the latest version of the official acrobat reader is required.
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 without prior permission or for financial gain is strictly prohibited. This website is not affiliated with or sponsored by Micro Seiki.