DIATONE DP-74B
¥ 29,800 (around 1971)
Commentary
A belt drive type stereo record player.
The drive system uses a belt drive system with an endless belt made of polyurethane.
A 4-pole synchronous motor with less vibration and no uneven rotation is used to achieve stable rotation even against fluctuations in the power supply voltage load.
In addition, the rotor has been polished with micro precision to bring out the performance of the motor.
Equipped with an auto mechanism, it can handle auto elevation, Oatley turn, reject, etc.
The tone arm uses a static balance type pipe arm.
This arm is equipped with inside for scan seller and lateral balancer.
An aluminum die-cast turntable with a diameter of 30 cm is used for the turntable.
The head shell is equipped with a high-compliance MM type cartridge.
Cartridge can be changed freely.
Uses a free stop hinge that can stop the dust cover at any position.
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Model Rating
| Type | Belt drive type record player |
| Motor | 4-pole synchronous motor |
| Turntable | 30 cm Aluminum Alloy Die-cast |
| Number of revolutions | 2 Speeds (33 1/3rpm, 45 rpm) |
| Wow and flutter | Not more than 0.15% |
| Signal-to-noise ratio | 45 dB or more |
| Pick-up | Static Balanced Plug-in Head / Pipe Arm With Lateral Balancer, Inside Four Scan Seller |
| Head shell | Lightweight Aluminum Alloy, European Type Plug-in System (Needle Pressure Direct Reading Type) |
| Cartridge | High Compliance MM Type Cartridge (DMC-8700) |
| Needle pressure | 3 ± 0.5g |
| Crosstalk | 25dB(1kHz) |
| Needle to be used | 0.5 mil Diamond Needle (3D-33M Type) |
| Compliance | 10x10-6cm/dyne |
| Output balance | 1 dB or less |
| Frequency characteristic | 10 Hz to 25 kHz |
| Load resistance | 50k Ω |
| Power supply voltage | 100 VAC, 50Hz/60Hz |
| Power consumption | 12W |
| External dimensions | Width 450x Height 190x Depth 360 mm |
| Weight | 6.6kg |