© Pro-Ject Audio Systems · Pro-Ject Debut Pro · Revision 2021.09.01
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6. Fitting the lid
Fit the lid (dust cover 11) carefully over the hinge prongs and adjust the screws (13) until the lid stays open
where you want it to without being too stiff to open or close.
The lid is not only a dust cover but also a resonant structure likely to be excited by and to pass into the
plinth the acoustic energy emanating from your loudspeakers during replay. Therefore, it is
recommended to remove the lid completely during vinyl playback for achieving a better sound
quality.
7. Switching on and off, changing replay speed
The turntable is equipped with a rocker switch for electronic speed change. To play records at 33 rpm, move
the rocker switch to the left side. To play records at 45 rpm, move the rocker switch to the right side. To be
able to play 78 rpm the flat drive belt has to be removed and the round drive belt has to be fitted around the
sub-platter (4) and the larger diameter part of the motor pulley (2). To do so, the platter (5) has to be
removed.
After the round drive belt has been fitted, moving the rocker switch to the right selects 78 rpm.
PRO Info: Electronic Speed Control
The speed is electronically controlled with precision motor control unit which guarantees the most accurate
and stable speeds. Each motor runs at a certain voltage and frequency. The frequency (50Hz) is not taken
straight from of your wall power, but cleanly generated by the motor control unit. You will not have any
fluctuations in speed caused by slight variances in the frequency from your mains power. The voltage
describes how silent your motor will run. Too much or too little voltage or fluctuations in voltage will cause
the motor to vibrate, which means that, basically, you are generating noise.
So that no motor vibrations reach the pickup, the Debut PRO has the new, proven motor suspension first
seen in our Debut Carbon EVO, which is responsible for the perfect decoupling of the motor.
