The Hydraulic Reference, a classic design by David Gammon from 1964, has been meticulously re-engineered for modern use while preserving its iconic aesthetic. This latest version is hand-built to the original specifications, ensuring authenticity and quality. Utilizing advanced CNC machining technology, each component is crafted with precision, followed by careful hand-assembly to guarantee superior performance and durability. This product not only pays homage to its cinematic history, including its notable appearance in Stanley Kubrick’s ‘A Clockwork Orange,’ but also meets contemporary standards of excellence.
The Turntable employs a low-speed, recoil start synchronous motor on a double-deck spring mounting driving the platter via a neoprene rubber belt, thereby providing complete vibration insulation. The main bearing incorporates a silicone fluid well rotating at the same speed as the platter, fine speed control being provided by a static vane immersed in the fluid. Platter speed is therefore determined by the A.C mains frequency, which is effectively constant, and the viscous fluid flow onto the vane, also effectively constant. Speed changing (45 r.p.m. and 33.3 r.p.m.) is accomplished by moving the drive belt from one motor pulley to the other and a neon-lit stroboscope is provided for accurate speed setting. In order to eliminate completely any mechanical shock to the turntable, on/off switching of the drive motor is accomplished by means of a reed switch. The Hydraulic Reference Turntable also has provision for the unique sweep arm and stylus brush.
Specifications
Platter 305mm diameter machined from a solid billet of aluminium, and fitted with six 24k gold plated inertia platter weights. The record is supported on neoprene pads, thereby reducing rumble and induced static to an absolute minimum.
Plinth CNC machined marine grade plywood faced with black acrylic
Isolation Feet Aluminium fitted with cork/rubber damping pads.
Lid Clear acrylic.
Main bearing Slim sectioned ball-ended ground and polished silver steel spindle running onto a ceramic ball bearing and hardened steel thrust plate.
Motor Single-phase synchronous, recoil start.
Tonearm Boards Available for most new and classic arms.
Power requirement 115vac or 240vac, single-phase, 50 Hz or 60Hz.
Speeds 33.3 and 45 r.p.m.
Speed Control +/- 2% of nominal
Speed Indication Neon-lit stroboscope geared up 6:1 to give a 6 degree reading for a 1 degree variation in platter speed