Pro-Ject Audio Systems Pro-Ject RPM 9.1 Manuel utilisateur

INSTRUCTIONS FOR USE

Pro-Ject RPM 9.1

PRO-JECT RPM 9.1

Controls, features and connections

1 Separate motor unit (motor and motor base) *

2 Stepped drive pulley

3 Drive belt * 3a Hook

4 Operation indicator

5 Platter *

6 Tonearm counterweight * 6a Downforce scale

7 Tonearm lift lever

8/18 Tonearm rest and removable transport lock

9 Tonearm tube 9a Tonearm base

13 Low voltage cable and power supply socket

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 finger lift

22 Adjustable tip-toe feet with anti-scratch cups *

Record weight (not shown) *

Connection cable (not shown) *

Power supply (not shown) *

Optional lid (not shown)

Single adapter (not shown) *

Spirit level (not shown) *

Template (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 *.

Set-up

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 insert the spindle into the bearing. 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.

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 - 10g. Alternative counter-

weights for cartridges weighing between 11 - 15g, 8 - 11g or 5 - 8g 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), and 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.

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.

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

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!

Screw

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 " " "

20mN and bigger 3rd " " "

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.

For detailed product information please refer to the Pro-Ject web site www.project-audio.com.

Mains power connection

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 record player's motor unit (13) before connecting

the power supply to the mains.

Switching on and off

Pressing the power switch (20) alternately starts or stops the motor.

Changing replay speed

Using the accessory tool provided (3a), hook the belt (3) over the larger diameter part of the motor pulley (2).

To revert to 33 1/3 r.p.m. repeat the proceedings using the smaller step on the pulley.

When the Pro-Ject Speed Box ore the Speed Box SE are used speed change between 33 and 45 r.p.m.

is electronic. There is no need to move the belt manually.

For detailed product information please refer to the Pro-Ject web site www.project-audio.com.

Fitting the optional lid

Fit the lid carefully on to the record player from above.

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 lid (optional) 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. It is therefore recommended

that the lid be removed for optimum sound quality.

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 9.1

Nominal speeds 33,33/45,11 r.p.m.

Speed variance ±0,5 %

Wow and flutter ±0,06 %

Signal to noise -73dB

Downforce range 10-30mN

Effective tonearm length 9 " (230mm)

Overhang 18mm

Power consumption 2W

Outboard power supply 16V/500mA AC, suitable for your country's mains supply

Dimensions (W x H x D) 440 x 180 x 325mm

Weight 12,5kg

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.

Guarantee repairs will only be effected if the unit is returned correctly packaged. For this reason we recommend

keeping the original packaging.

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 the last page of this user guide. Please remove these parts

and pack them separately: counterweight (6), anti-skating weight (16) platter (5), cartridge and belt (3). Fit

the cartridge protection cap. Insert the transport lock for the tonearm (18) 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: Audio Trade GmbH

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.

Accessories

Power supply

Record weight

Motor

Motor base

Tonearm counterweight

Platter

Tonearm

transport lock

Please

remove feet

bevore repacking

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