Pro-Ject Audio Systems Juke Box User manual

INSTRUCTIONS FOR USE
Pro-Ject Juke Box

© Audio Trade GmbH · Pro-Ject Juke Box / Ortofon OM 5E · Revision 19.8.09/1.9.09
2
10
11
12
13
3a
2
3
4
5
11 11
20
0
30 5
21
8
6
16
6a
18
9
17 15
7
22
23
9a
IN MP3 IN 1 IN 2
21V
=
16V
20a
13a 1414a
1
SELECTOR
IN MP3
IN 1
IN 2

© Audio Trade GmbH · Pro-Ject Juke Box / Ortofon OM 5E · Revision 19.8.09/1.9.09
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PRO-JECT JUKE BOX
Controls, features and connections
1 Motor
2 Stepped drive pulley
3 Drive belt * 3a Hook *
4 Hub
5 Platter with felt mat *
6 Tonearm counterweight * 6a Downforce scale
7 Tonearm lift lever
8/18 Tonearm rest and removable transport lock
9 Tonearm tube 9a Tonearm base
10 Lid *
11 Lid hinges
12 Hinge fasteners
13 Power supply socket 16V 13a Power supply socket 21V
14 Speaker connector 14a Line level inputs
15 Anti-skating weight adjustment scale
16 Anti-skating weight *
17 Anti-skating weight support hoop
20 Power switch 20a Start/stop switch (motor)
21 Headshell with finger lift and fitted Ortofon OM 5E cartridge
22 Single adapter *
23 3,5mm connector *
16V and 21V 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 *.
Set-up
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 transport lock (18) from the tonearm. Store it in the original packaging so it is are available for
any future transportation.
Fit the drive belt (3) around the hub (4) 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. Fit the
platter (5) and felt mat over the spindle of the hub (4).

© Audio Trade GmbH · Pro-Ject Juke Box / Ortofon OM 5E · Revision 19.8.09/1.9.09
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Cartridge downforce adjustment
The counterweight (6) supplied is suitable for cartridges weighing between 3,5 - 5,5g. Alternative
counterweights for cartridges weighing between 6 - 9g or 1,5 - 3g 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.
The recommended downforce for the factory fitted cartridge is 17,5mN.
Anti-skating force adjustment
Slip the loop of the anti-skating weight's thread over the second groove of the stub to set the correct anti-
skating force for the factory-fitted cartridge. Feed the thread through the loop of the wire support (17).
Connectors
IN MP3 IN 1 IN 2 21V
=
16V
!
Take care to connect the left and right channels correctly. The right channel is usually marked red,
the left channel black or white.
The red speaker terminals carry the positive signal (+), the black speaker terminals the negative
signal (–). Make sure the polarity of the connection is correct at each end of the cables.
Inputs
Line level sources such as CD player, tuner, TV or MP3 player can be connected to the input sockets marked
IN MP3, IN 1 and IN 2.
Connection to the speakers
The output terminals accept loudspeaker cables terminated with 4mm ∅Banana plugs, spades connectors
or naked wire.
!
Only connect one loudspeaker with an impedance not less than 4 Ohm per channel.
Mains power connection
The turntable is supplied with a 16V and a 21V 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 plugs from the 16V and the 21V power supply to the socket (13) and (13a) on the
rear of the record player before connecting to the mains.
Fitting the lid
Fit the lid (dust cover 10) carefully over the hinge prongs and adjust the screws (12) until the lid stays open
where you want it to without being too stiff to open or close.

© Audio Trade GmbH · Pro-Ject Juke Box / Ortofon OM 5E · Revision 19.8.09/1.9.09
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Remote control
1
ON/OFF
not available
0
_
VOL
and
0+
VOL
adjust the sound volume
CH+
CH-
VOL+
VOL-
ON/OFF
0
_
CH
and
0+
CH
select the inputs.
The selected input is shown respectively by the lit LED.
Switching on and off
Pressing the power switch (20) switches the unit on and off. The red LED on the front panel shows that the unit
is powered on.
Front panel controls
SELECTOR
IN MP3
IN 1
IN 2
Input selector
After the unit is powered on it is instantly ready to play vinyl records. Pressing the SELECTOR button selects the
IN MP3, IN 1 and IN 2 inputs in turn. The selected input is shown respectively by the lit LED.
Volume
Adjust the volume to the desired level using the large knob on the front panel.
Playing vinyl records
Remove the cartridge protection cap (21) if fitted. Press the start/stop switch (20a) to start the motor. Put the
needle over the lead in-groove and lower the tonearm lift lever. Adjust the volume to the desired level.
Changing replay speed
To play records at 45 r.p.m. first remove the platter (5). Using the accessory tool provided (3a), hook the belt
(3) over the larger diameter part of the motor pulley (2). Refit the platter. To revert to 33,33 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.
*** In addition, 78 r.p.m. is available after fitting a special pulley, which may be purchased as an
optional extra.
For detailed product information please refer to the Pro-Ject web site www.project-audio.com.
Replacing batteries
Proceed as follows:
• Slide open the battery case cover
• Replace the battery. Make sure the battery is the right way round
• Refit the battery case cover
Battery type: 1 x CR 2032 / 3V
Do not dispose the batteries as ordinary domestic refuse. Please dispose your exhausted batteries at
the appropriate collection sites - usually located at supermarkets and drugstores.

© Audio Trade GmbH · Pro-Ject Juke Box / Ortofon OM 5E · Revision 19.8.09/1.9.09
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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 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 JUKE BOX
Record player
Nominal speeds 33,33/45,11 r.p.m.. *** 78 r.p.m. optional
Speed variance ±0,9 %
Wow and flutter ±0,15 %
Signal to noise -55dB
Downforce range 10-35mN
Effective tonearm length 8,6 " ( 218,5mm)
Overhang 18,5mm
Outboard power supply 16V/500mA AC, suitable for your country's mains supply
Cartridge Ortofon OM 5E
Frequency range 20-25.000Hz
Channel separation 22dB/1kHz
Output voltage 4mV
Recommended load resistance 47kohms/amplifier connection – MM-input
Compliance/stylus type 20µm/mN – elliptical
Recommended tracking force 17,5mN
Weight 5g
Replacement stylus Ortofon Stylus OM 5E
Amplifier
Power output 2 x 20W/30W at 8ohms/4ohms (both channels driven)
Frequency response 20Hz - 20kHz (+ - 0,2 dB)
Channel separation > 40dB at 20kHz
Noise floor > -100dB (A weighted)
THD < 0,05% at 10W
Gain 22dB
Phono amplifier Moving magnet (MM)
RIAA-equalisation curve accuracy 20Hz - 20kHz / max. 0,5dB
Line level inputs 3 pairs RCA/Phono sockets
Input impedance 20kohms
Outboard power supply 20V/3A DC (peak 7A DC), suitable for your country's mains supply
Replacement battery remote control 1 x CR 2032 / 3V
Power consumption 65W
Dimensions (W x H x D) 415 x 118 x 350mm, dust cover open 415 x 365 x 405mm
Weight 6,5kg

© Audio Trade GmbH · Pro-Ject Juke Box / Ortofon OM 5E · Revision 19.8.09/1.9.09
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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. This could be due to a faulty plug,
broken wire or solder joint or simply loose plug/socket connection.
Wrong input selected at amplifier.
Amplifier not switched on.
Amplifier or speakers defective.
No connection to the loudspeakers.
Distorted or inconsistent sound from one or both channels:
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: lid (10), 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
Copyright © 2009. 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.

© Audio Trade GmbH · Pro-Ject Juke Box / Ortofon OM 5E · Revision 19.8.09/1.9.09
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Tomearm
transport look
Lid
Platter
Accessories
Tonearm
counterweight