Zeus LP12 motor speed controller and sensor

Zeus Turntable speed controller – Replacement for Linn Valhalla / Hercules / Lingo / Mose etc.

Most Linn turntables with Valhalla boards do not run at 33.33 rpm and have quite large variations in speed, some running as high as 34rpm. Upgrading to the Zeus motor controller makes significant improvements to the listening sound stage, the sense of timing and rhythm of the track is far tighter. It’s like listening to the timing of CD but with the pleasure of listening to Vinyl.

The Zeus controller has an optical platter speed sensor and OLED display.

The Zeus board is designed, assembled and tested in the UK. Microprocessor controlled and fully CE approved.

• CE, UKCA approved
• Electronic switching between 33.3 rpm and 45 rpm
• Automatic speed sensor calibration.
• Highly accurate and pure sine wave frequency synthesis generated for 50Hz or 67.5Hz controlled to 0.001 Hz
• Internal platter optical platter feedback sensor to lock platter rotation at rock-solid speed. +/- 0.003 rpm. Optical speed sensing automatically compensates for worn belts, pulleys, bearings, motors and stylus drag utilizing PID control.
• Control over motor parameters such as frequencies, phase angle, voltage amplitude via a serial interface. Adjusting these values enables the smoothest motor operation with minimum motor noise and vibration. Values may be written to EEPROM once optimum setup is achieved. The boards will ship with suggested default values but are fully configurable to suit your setup via USB serial connection.
• Super quiet mode – Configurable option to reduce motor drive once the platter is at full speed. This reduces motor vibration and noise still further.
• Configurable Auto rotation on the application of main power
• Configurable low-power auto sleep timer when turntable idle.
• Combined black anodized aluminium switch/OLED display to indicate exact platter rotation speed and WOW.
• Automatic OLED display blanking (1-60 mins)
• Speed change is controlled by holding the power switch for four seconds. (Visual speed change badge and flash provided on OLED).
• Stylus and bearing run-time wear tracking counters
• Fits on the original Linn Valhalla cross brace mounting.
• Ready for Linn Karousel bearing.
• Class A motor drive circuitry.
• Less heat is generated than in the original Valhalla due to redesigned PSU section (no more burned-out resistors).
• Can be installed in Linn Axis – just wire the motor and existing power switch to the Zeus (soldering required).
• Supply 110v-230v 50/60Hz.
• Works with 50Hz and 60Hz synchronous Linn/Premotec/Philips/Airpax 110V motors.