Audio Database
BL-81
Commentary

The RX-5000 and BL-111 have taken advantage of the direct coupling system, which has gained a reputation. By combining the heavy duty turntable with the belt drive system, the player system improves overall player performance.

The direct coupling system integrates the rotating mechanism (large shaft assembly) and shaft assembly) and an arm mount are integrated into a metal frame. This structure makes the vibration circulation system in phase, shortens the vibration circulation system, and improves rigidity.
By minimizing the phase shift of the vibration mode between the turntable and the arm support to zero, the needle tip is not shaken by unnecessary vibration, enabling more faithful record reproduction.

A special aluminum turntable with a diameter of 306 mm and a weight of 3.2 kg is used for the turntable, and a 16 cm series extra-thick stainless steel shaft is used for the supporting shaft.
The moment of inertia of 550 kg ・ cm2Inertia.

The tone arm is based on the MA 505 XII, which has a unique mechanism that allows the needle pressure to be adjusted during performance, and has been further improved. The improvement is that by adopting the arm pipe replacement system, the straight pipe with excellent strength and the S-shaped arm pipe that can be used with all cartridges can be replaced.
Each pipe is made of brass, and an ultra-low resistance connector for computers is used to connect the pipe to the body to prevent energy conversion loss.
In addition, the straight pipe, in particular, has an integrated structure with the head shell using a special high-rigidity aluminum material to further increase the strength and prevent resonance.
The signal cable uses a completely separate system to prevent harmful induction noise, and uses 30-core pure copper wire with a diameter of 0.05 mm.

By reducing the cabinet width to 48.4 cm, it is compatible with commercially available racks.
Also, it is finished with urethane finish.

Model Rating
Type Cartridgeless record player
Drive system Belt drive system
Motor used FG servo DC motor
Rated speed 33 1/3, 45 rpm
Turntable Made of aluminum, diameter 306 mm
Weight 3.2 kg, Moment of Inertia 550 kg / cm2
Uneven rotation 0.025% or less (WRMS)
Signal-to-noise ratio 60 dB or More (JIS)
Rotational speed fine adjustment range + / - 3%
Tone arm Dynamic balance type pipe replaceable type
Effective length 237mm
Needle pressure variable range 0g ~ 3g
Applicable Cartridge Dead Weight
Straight Pipe : 4g ~ 8.5g (Uses MA-505 weight)
8.5g ~ 15g (Attached Sub Weight SW-7 (A) is used)
S-shaped universal pipe (cartridge + head shell weight) :
    12g ~ 15.5g (Weight for Straight Pipe + SW-7 (A) Used)
14g ~ 21g (Using Weight for S-shape)
21g ~ 26g (Uses S-shaped Weight + SW-7 (A))
28g ~ 32g (S-shaped Weight + Separately Sold Sub Weight SW-7 (B) Used)
Power supply voltage 100 VAC, 50Hz/60Hz
Power consumption 1.5W
External dimensions Width 484x Height 198x Depth 384 mm
Weight 14.7kg