© Audio Trade GmbH · Pro-Ject Juke Box Esprit / Ortofon Alpha · Revision 2012.7.1
4
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
15mN
.
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
OUT
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 and outputs
Line level sources such as CD player, tuner or TV-set can be connected to the input sockets marked IN 1 and
IN 2. OUT provides an analog signal for digitalisation with an A/D converter.
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.
