User manual PRO-JECT RPM 9.1

[. . . ] 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. [. . . ] When the needle is lowered into the record groove and the tonearm is not resting on the lift arm, the tube of the tonearm should be parallel to the surface of the record. If it is not loosen both allen screws in the tonearm base just enough to allow vertical movement of the arm pillar without force and slide the arm up or down until it is parallel. Carefully retighten the allen screws without applying excessive force (which would deform the arm pillar) ­ finger tight is quite sufficient. Adjusting the azimuth The cartridge needle must be vertical in the record groove in order to trace the groove wall modulations correctly. A small screw at the bearing end of the arm allows incorrect azimuth to be Screw corrected if your needle is not mounted exactly perpendicular to the cartridge body (which is often the case). Slacken off the screw just enough to be able to revolve the arm tube without applying force. Please note: do not remove the screw completely!With the aid of a good magnifying glass adjust the needle until it is vertical in the groove (i. e. perpendicular to the record's surface). Ideally this should correspond to the top surface of the cartridge body being parallel to the record surface. When you are satisfied that the needle is vertical retighten the screw carefully. Under no circumstances should the arm tube be adjusted with the needle still in the record groove!Irreparable damage may be caused to the cantilever suspension!The arm must be lifted to make each adjustment and lowered afterwards to check it. Anti-skating force adjustment The anti-skating force must be adjusted according to the mass of the cartridge as follows: Downforce Groove in the stub (15) 10 - 14mN 1st from bearing rings 15 - 19mN 2nd " " " rd 20mN and bigger 3 " " " Hang the loop of the thread of the anti-skating weight in the groove of the anti-skating stub (15) corresponding to the downforce applied to your cartridge and feed the thread through the loop of the wire support (17). Connection to the amplifier The record player has gold plated female RCA phono sockets (14) so you can substitute the interconnect cables supplied with those of your choice for connection to the amplifier if you wish. Your dealer can advise you on alternative cables. Use the Phono input (sometimes labelled gram, disc or RIAA) on your amplifier. Make sure that the phono input offers correct matching and amplification for the type of cartridge used. Line inputs (such as CD, Tuner, Tape or Video) are not suitable. Take care to connect the left and right channels correctly. The right channel is usually marked red, the left channel black or white. Check the manual supplied with your amplifier for relevant information. An earthing wire may be connected to the screw terminal between the sockets if you encounter hum problems when using the record player. If your amplifier does not have an input suitable for phono cartridges you will require a separate phono amplifier stage for MM or MC cartridges such as the PRO-JECT PHONO BOX or the PRO-JECT TUBE BOX which is then connected between the record player and a free line level input of the amplifier. [. . . ] No signal through one or other channel or both channels: No signal contact from the cartridge to the internal tonearm wiring or from that to the arm lead or from that to the phono box or between that and the amplifier. This could be due to a faulty plug, broken wire or solder joint or simply loose plug/socket connection. Amplifier or speakers defective or muted. Strong hum on phono input: No earth connection from cartridge or arm or arm cable to amplifier, or earth loop. [. . . ]