Pro-Ject Audio Systems Box S USB User manual

INSTRUCTIONS FOR USE
Pro-Ject Stereo Box S

© Audio Trade GmbH · Pro-Ject Stereo Box S – 25/37W · Revision 2013.3.1
2
Dear music lover,
thank you for purchasing a PRO-JECT AUDIO amplifier.
In order to achieve maximum performance and reliability you should study these instructions for use carefully.
!
Warning of a hazard for the user, the unit or possible misuse.
Important notice.
Connectors
Record Out
Right
Left Right Left
Pro-Ject Audio Systems, Vienna, Austria
!
Make all connections whilst the amplifier is disconnected from the power supply.
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.
Only connect one loudspeaker with an impedance not less than 4 ohms per channel.
Never use any other power supply than the one supplied with the unit.
Inputs
Line level sources such as CD player radio or TV can be connected to the input sockets marked IN1 or IN2.
Connection to the speakers
The output terminals accept loudspeaker cables terminated with 4mm Banana plugs, spades connectors
or naked wire.
Record output, connecting a headphone amplifier
Record Out connects an analogue record device ore a Pro-Ject Head Box headphone amplifier.
Record Out provides a fixed output level.
Mains power connection
The unit 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 Power 20V "socket before connecting the power supply to the mains.

© Audio Trade GmbH · Pro-Ject Stereo Box S – 25/37W · Revision 2013.3.1
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Remote control
1
ON/OFF
turns the unit on or back into standby
0
_
VOL
and
0+
VOL
adjust the sound volume
CH+
CH-
VOL+
VOL-
ON/OFF
0
_
CH
and
0+
CH
select the inputs
Front panel controls
Stereo Box S
To switch on from standby or to standby
The push button (press and hold to switch into standby mode) on the left hand side of the front panel turns the
unit on or back into standby. The blue LED above the stand-by push button shows that the unit is switched on.
Input selector
After the unit is powered on, pressing the push button on the right, selects the In 1 and In 2 inputs in turn.
The optional input expander Pro-Ject Switch Box S provides three more inputs. For further details please see the
user guide of the Pro-Ject Switch Box S.
Volume
Adjust the volume to the desired level, using the large knob on the front panel.

© Audio Trade GmbH · Pro-Ject Stereo Box S – 25/37W · Revision 2013.3.1
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Replacing batteries
Proceed as follows:
 Unlock and slide open the battery case cover
 Replace the battery.
Make sure the battery is the right way round !
 Close the battery case cover
Battery type: 1 x CR2032 / 3V or 1 x CR2025 / 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.
Technical specifications Pro-Ject Stereo Box S
Power output: 2 x 25W/37W at 8 ohms/4 ohms (both channels driven)
Frequency response: 20Hz - 20kHz (-0,3dB, -2,5dB)
Channel separation: >65dB at 20kHz
Noise floor: >-90dB (A weighted)
THD: <0,07% at 15W
Gain: 31dB
Line-level inputs: 2 pairs RCA/phono sockets
Input sensitivity: 350mV
Input impedance: 50kohms
Record Out: 3-pole 3,5mm co-axial jack
Speaker connectors: 4mm banana plugs, spades connectors or naked wire
Outboard power supply: 20V/3A DC, suitable for your country's mains supply
Power consumption: 3A DC, <1W in standby
Replacement battery remote control: 1 x CR2032 / 3V or 1 x CR2025 / 3V
Dimensions W x H x D (D with sockets): 103 x 36 x 104 (122)mm
Weight: 720g without power supply
Service
Should you encounter a problem which you are not able to alleviate or identify, 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.
Warranty
The manufacturer accepts no responsibility for damage caused by not adhering to these instructions
for use. 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 ©2011. 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.