Aurex SR-250

Commentary

This record player uses a highly stable belt drive system and servo technology to improve rotational accuracy.

FG servo DC motor is used for the motor of the mechanism part.
In this motor, a coil (frequency detector) incorporated in the motor detects a change in the number of revolutions as a change in frequency. The waveform of this frequency is first adjusted, and it is finally compared with the reference voltage as a square wave. The difference voltage generated in this waveform is sent to the motor drive circuit to keep the motor drive voltage constant.

The operation mechanism is electronic, so that there is no trouble such as twisting of the belt at the time of speed change which occurs in the mechanical system, and the fine adjustment of the speed is also possible.

A static balance S-shaped tone arm is used for the tone arm part.
Precision ball bearing is used for the rotating shaft part, and the bearing receiver has been carefully finished so that it does not rattle. In addition, the holder that supports the arm has a die-cast finish with excellent durability and little aging.
Equipped with an anti-skating mechanism.

The cartridge is equipped with C-230M which is a MM type cartridge.

The cabinet uses particle board as a material and is reinforced to increase the strength.
We have also adopted a new design for the audio insulator that combines stainless steel spring and viscoelastic material. This insulator does not have a peak near 200 Hz, which is the high-energy frequency that causes howling.

Equipped with auto return and auto cut functions.
Uses a new design that operates correctly even with light needle pressure.

Equipped with a illuminator that illuminates the strobe pattern.

Uses rubber sheet with excellent sound quality.

Equipped with an oil dump type arm elevation mechanism.

It uses a head shell that is strong against twisting.

Uses a low-capacity output cord.

Uses a fleece top type cover.

Model Rating

Type	Record player
<Turntable portion>
Motor	DC servo motor
Drive system	Belt drive system
Number of revolutions	33 1/3, 45 rpm
Wow flutter	0.05%(WRMS)
Signal-to-noise ratio	55dB
Turntable	31 cm aluminum die-cast, 1.0 kg
Tone Arm Section
Type	Static Balance S-shaped
Effective length	222mm
Tracking error	+ 3 °, -1 °
Overhang	14mm
Needle pressure variable range	0 ~ 4g
Weight of mounting cartridge	3.5g ~ 10g
Cartridge Section
Type	MM Type (C-230M)
Frequency characteristic	20 Hz to 20 kHz
Output voltage	3 mv (1 kHz, 50mm/s)
Separation	20dB
Channel balance	1dB
Compliance	10x10-6cm/dyne
Recommended load resistance	50k Ω
Needle tip	0.5mil
Needle pressure	1.5g ~ 2g
Exchange needle	N-210C(¥2,000)
Dead weight	5.3g
<General>
Pwer	100 VAC, 50Hz/60Hz
Power consumption	3W
External dimensions	Width 448x Height 140x Depth 354 mm
Weight	6.0kg