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VPI Ads (Analog Drive System)

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"...a shockingly big deal — the ADS is killer."   - Scot Hull

The ADS design includes two pure analog frequency generators featuring low distortion and noise; a high current Class-A/B amplifier that is transformer-coupled to the turntable output; analog control logic for low noise operation; 33/45 RPM analog speed adjustment controls with center detente positions that are factory calibrated. 

The Machine:
  • The platter is started and stopped by the front panel Run/Stop momentary push button switch.
  • The front panel contains a two-position push button switch for selecting either 33 RPM or 45
    RPM operation.
  • There are separate speed adjustment controls for 33 and 45
  • The controls have a detented center position that is factory-calibrated for 60 Hz (33 RPM)
    and 81 Hz (45 RPM).
  • The speed is  continuously adjustable +/- 3 Hz  
  • Blue LED indicators adjacent to the controls indicate which speed is set at a glance.
Additional Specifications:
Line Voltage: 115/230 VAC Factory set
Line Frequency: 50/60Hz
Line Fuse: 1 amp (Slo-Blo)
Output voltage: 115/230 VAC Factory set
Start Voltage: 120/240 VAC
Run Voltage: 90/180 VAC
Output Frequency: 50Hz/60Hz Factory Set
Output Frequency Range: 60 Hz Center Detent: 60Hz @33 RPM & 81Hz@ 45 RPM
50 Hz Center Detent: 50Hz @33 RPM & 68Hz@ 45 RPM
Control Range: +/- 3Hz
Output Power: 15W
Dimensions: 16” X 4” X 12” (W X H X D)
Weight: 10lbs