Pro-Ject Audio Systems Pre Box S Manual de usuario

INSTRUCTIONS FOR USE

Pro-Ject Pre Box S

Dear music lover,

thank you for purchasing a PRO-JECT AUDIO preamplifier.

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.

Safety instructions

AC outlet voltages vary from country to country. Before connecting to the mains, make sure that the

voltage in your area meets the voltage requirements printed on the power supply.

The power supply is used to disconnect the unit from the mains. Make sure that the power supply is easily

accessible at all times. Never handle the device, the power supply while your hands are wet or damp.

Avoid letting liquids enter the device or the power supply. Never place any item containing liquid,

such as a flower vase on or near the device. Never spill any liquid on the device or the power supply.

Never place any naked flame sources, such as lighted candles on or near the device. The product shall not

be used in damp or wet locations, next to a bathtub, sink, swimming pool or any other similar conditions.

Connectors

Pro-Ject Audio Systems, Vienna, Austria

18V

Make all connections whilst the preamplifier 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.

Never use any other power supply than the one supplied with the unit.

Pre out

A power amplifier or active loudspeakers can be connected to the output sockets marked Out.

Inputs

Line level sources such as CD player radio or TV can be connected to the input sockets marked In 1 or In 2.

Remote power-on, switching voltage

The socket marked Trigger Amp provides a 12V DC switched output voltage for remote power-on of units with

this facility (such as the Pro-Ject Amp Box S or Pro-Ject Amp Box S Mono), which corresponds to the position

(on/off) of the power switch on the front panel.

Optional Pro-Ject Switch Box S. The Trigger Switch socket connects the input expander Pro-Ject Switch Box S.

The Switch Box S provides three extra line-level inputs.

A 45cm remote power-on cable (polarity

) is supplied with the Pro-Ject amplifiers for connecting the

remote-switched power socket to the Pro-Ject Pre Box S. Longer cables are available from your Pro-Ject dealer.

Do not use this trigger output for any other connections for which it is not designed.

Mains power connection

Connect the low voltage plug from the power supply to the Power 18V "socket before connecting the power

supply to the mains.

Remote control

ON/OFF

turns the unit on or back into standby

VOL

and

VOL

adjust the sound volume

CH+

CH-

VOL+

VOL-

ON/OFF

and

select the inputs

Front panel controls

Pre Box S

To switch on from standby or to standby

The push button on the front panel turns the unit on or back into standby (press and hold to switch into

standby mode). 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 grey button next to the two LEDs selects the inputs in turns. The

selected input will be shown by the corresponding LED.

If the optional input expander Pro-Ject Switch Box S is connected, the input selector will also select the

additional inputs provided by the Switch Box S. 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.

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 Pre Box S

Frequency response: 20Hz - 20kHz (±0,2dB)

Noise floor: -100dB (A weighted)

THD: 0,001%

Gain: 8,5dB

Pre out: 1 pair RCA/phono sockets

Output voltage typically: 1V at 1kHz

Line-level inputs: 2 pairs RCA/phono sockets

Input impedance: 20kohms

Trigger Amp: 12V DC switching voltage

Trigger Amp: 2-pole 2,5mm co-axial jack

Trigger Switch: digital switching signal

Trigger Switch: 2-pole 2,5mm co-axial jack

Outboard power supply: 18V/500mA DC, suitable for your country's mains supply

Power consumption: 100mA AC, <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 (109)mm

Weight: 630g 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

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.

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