2 and 3 Speed Push Button Control Units

The illuminated and non-illuminated buttons push buttons that we use on our speed control units are tactile (they do not click when you press them).

The following procedure applies to all of our push button controllers.

1. Please ensure the speed control unit is not plugged into the mains electricity, and your turntable is set up correctly.
  2. With the turntable 'Connect Lead' supplied in the kit, connect the Speed Control Unit (SCU) to the turntable. The connectors vary in type depending on which turntable you have.
  3. Ensure that the SCU's power switch at the rear of the SCU is off.
  4. Connect mains power lead to the SCU.
  5. Place plastic strobe disc (supplied with kit) on the platter and switch the speed control unit on at the rear of the unit.
  6. Press the 'ON' button for 1-2 seconds, it will flash and the 33.3 button will illuminate, at the same time the platter will start to rotate.
  7. Check the speed with with an incandescent table light plugged into the mains or use fluorescent lighting (not an LED type of lamp).
  8. Adjust the speed if necessary by pressing the 'Fast' or 'Slow' buttons, which ever is applicable. The longer you hold the button in, the faster or slower the platter is adjusted.
  9. After you have set the platter speed to 33.3 RPM, press the 45 button and repeat the speed adjustment to 45 RPM by pressing the 'Fast' and 'Slow' buttons until the platter is spinning at 45 RPM.................... If you have the three speed controller repeat this operation by pressing the 78 button and adjust to 78 RPM.

10. You should now be all OK to play your vinyl at the correct speed, just press the 'ON' button to start.

If you are having any problems with the speed control unit, then please click on the following link. tpa_audio_dc_motor_drive_trouble_shooting.htm

If you are not able to sort your speed control problem out from the information in the above link, then please contact us.


Important notice : - EARTHING !!

Always use a 3 – wire moulded mains plug with integral lead with IEC female connector to connect to the controller, in the UK, commonly known as a ‘kettle plug’ lead. It is essential that the mains earth is connected to the controllers to prevent electric shock.

Controllers with ungrounded enclosures can become lethal devices in the event of a transformer insulation failure or accidental connection of the live supply to the enclosure. Whereas with a grounded enclosure, such a failure simply blows the mains fuse.

All DC controllers supplied by TPA require earthing to stop unwanted interference either incoming or outgoing. The TPA DC regulated power supply and the TPA DC speed controllers, have an integral LC line filter. The line filter serves the purpose of preventing possible radiation of radiofrequency interference (RFI) from the controller via the power line, as well as filtering out incoming interference that may be present on the power line.

For the filter to provide optimum performance it is essential that the mains earth is connected.


Please contact us if you require further information.


We are continually striving to improve the performance of our products, so we reserve the right to change specification without notice.

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