Micro Seiki BL-51

Key Features

• Drive System: Belt-drive with an FG servo DC motor.

• Motor: FG servo DC motor providing precise speed control.

• Speeds: 33.33 and 45 rpm.

• Platter: 31 cm (12.2 inches) aluminum die-cast platter weighing approximately 2.3 kg.

• Platter Shaft: Centered on a very thick 1.6 cm shaft with concentricity machined down to 0.4 microns.

• Wow and Flutter: Less than 0.025% WRMS (not explicitly stated for BL-51, but typical for similar models).

• Signal-to-Noise Ratio: Not specified, but generally similar models offer a high SNR.

• Tonearm: Available in two versions: BL-51 with a straight tonearm (MA-701) and BL-51X with an S-shaped tonearm.
  Tonearm Material: Aluminum alloy tube with a carbon fiber headshell.
  Tracking Force Range: Adjustable with cylindrical dials for precise control.

• Dimensions: Not specified, but similar models typically have dimensions around 510 x 175 x 400 mm (WHD).

• Weight: Approximately 11.8 kg (26 lbs), with the plinth accounting for a significant portion of the weight.

• Years of Manufacture: 1979 to 1985.

• Made in: Japan.

• Original Price: Not specified, but available for purchase today at prices around $2,100.

• Power Supply: Operates at 100V, 1.5W, 50/60 Hz.

Additional Details

• The BL-51 is a high-quality belt-drive turntable known for its precise speed control and robust build quality.

• It features an exclusive oil-bath damping system to isolate the rotating assembly from mechanical resonances, reducing the need for periodic lubrication and minimizing the effects of temperature changes and aging.

• The turntable is praised for its sound quality, particularly its clean midband and solid bass response, making it a sought-after model among audiophiles.

• The BL-51 is compatible with various tonearms, including the Infinity Black Widow, ADC, Grace, SME, and Stax arms