Linn Lingo Mk1 Power Supply

Linn products have always said that the turntable is the most important part of a high fidelity system. If you don’t get a good signal off the record then it doesn’t matter how good the rest of your system is, the sound will be bad.
When upgrading your system there is a strict hierarchy to observe. After the turntable, the next most important component is the arm., followed by the cartridge. Once the turntable system has been optimised, the next component to choose is the amplifier. Finally, the last link in the chain is the loudspeaker.
At the heart of the Lingo are two very low noise crystal oscillators derived from the Linn Numerik digital recording system – one for 33 rpm and one for 45 rpm. The switch on the turntable selects the appropriate oscillator, whose output is fed into a synchronous counter to produce a 50 Hz or 67.5 Hz square wave for 33 rpm and 45 rpm respectively.
As the LP12 motor runs quietest when driven with a clean sinusoidal waveform, a precision filter is employed in the Lingo to remove harmonics from the square wave leaving only a pure sinusoid.
The most uniform torque is delivered from the motor when both phases are drive at ninety degrees with respect to one another. This is achieved by a ninety degree phase shift network after the filter. The two resulting sinusoids drive two high voltage Class A amplifiers, the outputs of which drive the two motor windings.
The Lingo uses stall detection circuitry to feed the motor with a higher voltage for increased start-up torque. When the platter reaches the selected speed, this load sensing circuitry reduces the power output. From then on, the motor just maintains the platters own inertia to keep it going silently.
A toroidal transformer on the PCD and a mains filter give a very high degree of electrical isolation from the mains voltage supply.
Dimensions: 157 (W) x 326 (D) x 75 (H) mm

Turnaround

Orders will usually dispatched within 2 working days of receiving cleared payment.

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