Pro-Ject Audio Systems Pro-Ject RPM 9.1 Acryl User Manual

Page 4

Set-up

The deck is supplied partially disassembled and carefully packaged for safe transport. Carefully remove all
parts from the transport packaging.
Screw the three feet (22) onto the threaded bolts located on the underside of the plinth. Make sure the
surface you wish to use the turntable on is level (use the supplied spirit level) before placing the turntable on it.
Carefully place the platter bearing housing over the bearing axle. Put the record weight on the platter and

level the plinth using the supplied spirit level and the adjustable feet (23).
Assemble motor and motor base. Place the motor unit to the left of the turntable. Position the motor unit with
the aid of the supplied template. Fit the drive belt (3) around the platter (5) and the smaller diameter part of
the motor pulley (2).
Avoid getting sweat or grease on the belt as these will deteriorate the performance and reduce the belt's

lifespan. Use absorbent kitchen paper to remove any oil or grease from the outer edge of the hub and the belt.
Remove the transport lock (18) from the tonearm. Store it in the original packaging so they are available for
any future transportation.

We recommend to use the record player without a mat on the platter.

Fitting and connecting the cartridge

All cartridges with half inch mounting holes can be fitted. Leaving the needle's protection cover on, fit the
cartridge to the headshell using the screws supplied with the cartridge by passing one screw through each
slot in the headshell (21). Do not tighten the nuts yet.
Connect the tonearm wires to the cartridge pins as follows:
white

left channel positive (L+)

red

right channel pos. (R+)

green

right channel return (R -)

blue

left channel return (L -)

The full sound quality of the record player can only be achieved if the cartridge is correctly adjusted. Particular
tools like the PRO-JECT alignment tool are required to accomplish this job properly. If you are not well acquainted

with the adjustment of cartridges you are advised to call upon the willing help of your PRO-JECT dealer to
accomplish this task for you.

Please note: adjusting a cartridge and tonearm calls for the greatest care in order to avoid damaging

the cartridge or tonearm bearings. Leave this work to your dealer if you are in any way unsure of the
necessary steps and precautions to be taken.

Cartridge downforce adjustment

The counterweight (6) supplied is suitable for cartridges weighing between 6 - 10 (counterweight no. 16).
Alternative counter-weights for cartridges weighing between 11 - 15g (counterweight no. 3), 8 - 11g
(counterweight no. 2) or 5 - 8g (counterweight no. 9) are available as accessory parts. Adjust the downforce
prior to installing the anti-skating weight.
Pushing carefully, turn the counterweight (6) onto the rear end of the tonearm tube (9), so that the downforce

scale (6a) shows towards the front of the player. Lower the armlift and position the cartridge in the space
between arm rest and platter. Carefully rotate the counterweight (6) until the armtube balances out. The arm
should return to the balanced position if it is moved up or down. This adjustment must be done carefully. Do
not forget to remove the cartridge protection cap if fitted.
Once the arm is correctly balanced return it to the rest. Hold the counterweight (6) without moving it, and gently

revolve the downforce scale ring (6a) until the zero is in line with the anti-skating prong (15). Check whether the
arm still balances out.
Rotate the counterweight counter clockwise (seen from the front) to adjust the downforce according to the
cartridge manufacturer's recommendations. One mark on the scale represents 1 mN (= 0,1g / 0,1 Pond) of
downforce.