Micro Seiki BL-51

1 9 7 9 1979
1 9 8 4
Plus
1984+

Little Micro quite different from the later belt-driven ultra vinyl spinners, the BL-51 was however one of the brand's bestselling spinner, along with the BL-91.

The light 2,3kg platter is centered on a very thick 1,6cm shaft, the concentricity of which is machined down to 0,4 microns. The entire high-precision polished ball bearing + shaft is suspended in a secluded oil-bath - avoids periodic servicing and remains unaffected by temperature changes or aging.

The drive is a servo-controlled DC motor which drives the platter by way of a specially engineered low-tension belt made of carbon/urethane compound ; this belt is ground to a precise 0,45mm thickness.

The base is, ahhh, genuine plywood, not the all-too-frequent compressed wood particles - plywood remains one of the best acoustical damping materials.
Finish is hand-rubbed ebony veneer for a touch of discrete classiness.
Optional tonearm delivered was the low-mass Micro MA-701.

Otherwise, the Micro blank armboard could welcome the Micro MA-707, SME 3009, Infinity Black Widow, ADC LMF-1 & LMF-2, Grace G-704, G-707 & G-714 and the Stax UA-7 - the latter being made by... yes : Micro Seiki :)

...but one could also go for something else than the usual suspected suspects for a little more excitement and welcome change of perspective : a Sony PUA-1600S would do just as fine !


A real BL-51 at hifi-do's.

Micro Seiki BL-51, image 1 Micro Seiki BL-51, image 2 Micro Seiki BL-51, image 3
Micro Seiki BL-51 specifications
Title Value
Type : armless belt-drive
Motor : FG servo DC
Speeds : 33 1/3 & 45rpm
Pitch control : ± 3%
Wow & flutter : < 0,025%
S/N ratio : > 75dB
Platter : diecast aluminium
Ø 31cm / 2,3kg
PC : 1,2W
Dimensions : 51 x 17,5 x 40,5cm
Weight : 11,8kg
Armboards Armboards
A-1201 Micro MA-505 / 505X /
Micro 505S / 707X
Audiocraft AC-300MKII
SAEC WE-407 23
A-1202 SAEC WE-308 / 308N /
SAEC WE- 308SX / 317
A-1203 FR FR-64 / 64S / 64B
FR FR- 64FX / 14
A-1204 FR FR-24MKII / 54
Denon DA-303 / 305 /
Denon DA-307
Denon DA-309 / 401
Victor UA-5045
A-1205 Micro MA-505XII / 505SII
Micro MA- 505MKII
Micro MA-808X
A-1206 Audiocraft AC-3000MC
SME 3009SII / 3009SIII
SME 3010R
Micro Seiki BL-51 : 0 topic
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page online since : november 2008
page updated : not yet
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