INSTRUCTIONS FOR USE
Pro-Ject RPM 6 SB
1
22
2
1
3
4
13
5
20
14
16
17
6
15
6a
8
18
9
21
23
25
21
SPEED BOX
33 45/78 SPEED
SPEED BOX
23 23
33 45/78 SPEED
24
17
37mm
38mm
9a
3a
2
© Pro-Ject Audio
PRO-JECT RPM 6 SB
Controls, features and connections
1 Motor transportation screw (marked red)
2 Stepped drive pulley
3 Drive belt *
4 Hub *
3a Hook
5 Sandwich platter *
6 Tonearm counterweight *
9 Tonearm tube
13 Power supply socket
6a Downforce scale
7 Tonearm lift lever
8/18 Tonearm rest and removable transport lock
9a Tonearm base
14 Phono output sockets and earth connection
15 Anti-skating weight adjustment scale
16 Anti-skating weight *
17 Anti-skating weight support hoop
20 Power switch
21 Headshell with optional finger lift *
22 Motor
23 Spike feet
Record weight (not shown) *
Power supply (not shown) *
Dear music lover, thank you for purchasing a PRO-JECT AUDIO record player.
In order to achieve maximum performance and reliability with this record player you should study these instructions for use carefully.
Warning of a hazard for the user, the unit or possible misuse.
Important notice.
During assembly and adjustment of the deck small parts could be lost if not carefully placed in a suitable receptacle.
Before starting assembly make yourself acquainted with the parts listed above and correspondingly numbered in the technical drawings above. Separately packed items are marked with an asterisk *.
© Pro-Ject Audio
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Set-up
The deck is supplied partially disassembled and carefully packaged for safe transport. Carefully remove all parts from the transport packaging. Make sure the surface you wish to use the turntable on is level (use a spirit level) before placing the turntable on it. Remove the two red transport screws (1) which secure the motor (22) during transportation.
Carefully insert the spindle into the bearing. Fit the drive belt (3) around the hub (4) and 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.
Fit the platter over the spindle of the hub.
Remove the transport lock (18) from the tonearm and the tonearm bearing. Store it together with the two red motor transport screws (1) in the original packaging so they are available for any future transportation.
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 red green blue left channel positive (L+) right channel pos. (R+) right channel return (R -) left channel return (L -)
The full sound quality of the PRO-JECT RPM 6 SB 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 - 10g. Alternative counterweights for cartridges weighing between 3,5 - 7g and 8 - 12g are available as accessory parts. Adjust the downforce prior to installing the anti-skating weight. Adjust the downforce prior to installing the anti-skating weight.
Gently push and turn the counterweight (6) onto the armtube stub. 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 (as with the Pro-Ject K4 or K6).
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 clockwise (seen from the front) to adjust the downforce according to the cartridge manufacturer's recommendations. One mark on the scale represents 1 mN (=1g, 1 Pond) of downforce.
Adjusting the vertical tracking angle (vta)
Put a record and the record weight on the platter. 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.
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© Pro-Ject Audio
Adjusting the azimut
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 azimut to be corrected if your needle is not mounted exactly perpendicular to the cartridge body (which is often the case).
Screw
Slacken off the screw just enough to be able to revolve the arm tube without applying force. 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, but in practice this is often not the case.
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
10 - 15mN
Groove in the stub (15)
1 st from bearing rings
15 - 20mN 2 nd " " "
20mN and bigger 3 rd " " "
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). By applying gentle pressure to the wire support bend it until it is positioned exactly like it is shown on page 2 (17/9a).
Changing replay speed
Press the speed change button (24) to switch between 33 and 45 r.p.m.. The selected speed is shown respectively by the lit green LED (33 r.p.m.) or red LED (45 or 78 r.p.m.).
To replay records at 78 r.p.m. perform the following steps: Remove the platter (5) and using the tool (3a) from the accessory kit fit the belt (3) around the larger diameter step of the pulley (2). Replace the Platter, start the turntable at 33 r.p.m. and switch the speed to 45 r.p.m., the platter will then revolve at 78 r.p.m..
To play at 45 or 78 r.p.m. please always start the turntable at 33 r.p.m. and then switch to the higher speed when it has attained full speed.
Connection to the amplifier
The PRO-JECT RPM 6 SB 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 SE or the PRO-JECT TUBE BOX which is then connected between the record player and a free line level input of the amplifier. For further information see the last page.
© Pro-Ject Audio
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Mains power connection, switching on and off
The turntable is supplied with a power supply suitable for your country's mains supply. Check the label before connecting to ensure compliance with the mains rating in your house. Connect the low voltage plug from the power supply to the socket (13) on the rear of the record player before connecting the power supply to the mains. Pressing the power switch (20) alternately starts or stops the motor.
Maintenance and cleaning
Your record player requires little or no regular maintenance. Remove dust with a slightly moistened antistatic cloth. Never use a dry cloth because this will create static electricity which attract more dust! Antistatic cleaning fluids are available at specialist stores but must be applied sparingly to avoid damage to rubber parts. It is recommended to fit the needle cover before cleaning or maintenance is carried out to avoid damage.
If the player is not used over a long period of time the drive belt can be removed to prevent unequal stretching.
Always disconnect the record player from the mains power supply as a precaution before maintenance!
Useful tips
The finger lift (21) may be fitted on top of the headshell under the cartridge fixing bolts or nuts - not between headshell and cartridge body - but may impair the sound quality by adding resonances. It is supplied to ease placement of the arm over the record and may be omitted. The use of the lift (7) considerably facilitates use of the arm without the finger lift.
The record player should be positioned on a low-resonance surface such as wood or multiple layer ply board to avoid structural vibrations disturbing replay.
Technical specifications PRO-JECT RPM 6 SB
Outboard power supply
Power consumption
Electronic speed change
Speed variance
Wow and flutter
Signal to noise
Downforce range
Effective tonearm length
16V/500mA AC, suitable for your country's mains supply
6W
33,33/45,11 r.p.m. or 78 r.p.m.
±0,5 %
±0,08 %
-70dB
10 - 35mN
9 " (230mm)
Overhang 18mm
Dimensions (H x W x D) 170 x 385 x 330mm
Weight 8kg
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© Pro-Ject Audio
Potential incorrect use and fault conditions
PRO-JECT turntables are manufactured to the highest standards and undergo strict quality controls before leaving the factory. Faults that may possibly occur are not necessarily due to material or production faults but can sometimes be caused by incorrect use or unfortunate circumstances. Therefore the following list of common fault symptoms is included.
The platter doesn't turn although the unit is switched on:
The unit is not connected to the mains power supply.
No mains at the socket.
Drive belt is not fitted or has slipped off.
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.
Phono input not selected at amplifier.
Amplifier not switched on.
Amplifier or speakers defective or muted.
No connection to the loudspeakers.
Strong hum on phono input:
No earth connection from cartridge or arm or arm cable to amplifier, or earth loop.
Distorted or inconsistent sound from one or both channels:
Record player is connected to wrong input of amplifier, or MM/MC switch incorrectly set.
Needle or cantilever damaged.
Wrong r.p.m., drive belt overstretched or dirty, platter bearing without oil, dirty or damaged.
Service
Should you encounter a problem which you are not able to alleviate or identify despite the above information, please contact your dealer for further advice. Only when the problem cannot be resolved there should the unit be sent to the responsible distributor in your country.
Never return a record player without making sure that is it safely disassembled and correctly packaged in the original packaging according to the diagrams on page 8 of this booklet. Guarantee repairs will only be effected if the unit is returned correctly packaged. For this reason we recommend keeping the original packaging.
Please remove these parts and pack them separately: counterweight (6), anti-skating weight (16) platter (5), cartridge, belt (3). Insert the transport screws for the motor (1), the transport lock for the tonearm (18) and the tonearm bearing prior to carefully packaging the record player.
Warranty
The manufacturer accepts no responsibility for damage caused by not adhering to these instructions for use and/or by transportation without the original packaging. Modification or change to any part of the product by unauthorized persons release the manufacturer from any liability over and above the lawful rights of the customer.
PRO-JECT is a Registered Trademark of H. Lichtenegger.
This guide was produced by: ATR-Audio Trade GmbH
Copyright © 2002
Audio Tuning. All rights reserved.
The information was correct at the time of going to press. The manufacturer reserves the right to make changes to the technical specification without prior notice as deemed necessary to uphold the ongoing process of technical development. Revision 6.2003.
© Pro-Ject Audio
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Counterweight
Hub
Accessories
2 motor transport screws
(marked red)
!
Please remove spikes bevore repacking
Platter
Record weight
Tonearm transport lock
8
© Pro-Ject Audio
Phono pre-amplifier Phono Box SE
Amplification and RIAA equalisation for MM and MC cartridges
Selectable impedance for MC cartridges
Subsonic filter
Dual-Mono circuitry for improved channel separation
Gold-plated RCA phono socket connections
Oversized outboard power supply
Tube phono pre-amplifier Tube Box
Amplification and RIAA equalisation for MM and MC cartridges
Selectable impedance for MC cartridges
Subsonic filter
Dual-Mono circuitry utilising two double triodes for improved channel separation
Gold-plated RCA phono socket connections
Oversized outboard power supply
Manufacturer reserves the right to change specification without notice. · © Pro-Ject Audio.
For detailed product information please refer to the Pro-Ject full catalogue or the web site www.project-audio.net
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