Optonica RP-3500 direct drive turntable by Sharp Nice Shape
Description .
The Sharp Optonica RP-3500 features a high performance drive unit employing the direct drive system.
It's superior characteristics assure quiet and smooth rotation of the platter and unsurpassed acoustic characteristics.
The highly sensitive tonearm is ideal for low stylus pressure providing high fidelity reproduction.
The cabinet is newly developed and consists of granite hardened by bond.
Combined with large size insulator adjustable in height, the RP3500 cabinet forms an ideal motor board of special anti vibration design, and assures remarkably improved howling margin.
The servo motor, the most important part of the drive system, incorporates a 72 pole frequency generator and outer rotor combined.
Features pitch control and a static-balance type S-shaped Tonearm
Specifications
Motor: 6-pole AC Servo motor with 72-pole FG servo mechanism
Drive system: direct drive
Speeds: 33 and 45rpm
Speed control range: within +-4%
Wow and flutter: less than 0.04% WRMS
Rumble: better than 60dB
Platter: 310mm aluminium die-cast with strobe marks
Tonearm: static balance s-shaped pipe arm
Effective length: 245mm
Overhang: 14mm
Offset angle: 21 degrees
Cartridge weight range: 4 to 18g
Cartridge: VM type
Frequency response: 20 to 20,000Hz
Output: 3mV
Channel separation: 20dB
Optimum tracking force: 2g
Load impedance: 47k ohms
Dimensions: 500 x 187 x 413mm
Weight: 16kg .
