Pro-Ject Audio Systems Box Design Pre Box DS Manual de usuario

INSTRUCTIONS FOR USE

Pro-Ject Pre Box DS

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.

Connectors

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 Pre Out.

Subwoofer output

An active subwoofer can be connected to the output sockets marked Sub.

Record output, connecting a headphone amplifier

Out connects an analogue record device ore a Pro-Ject Head Box headphone amplifier.

Out provides a fixed output level.

Inputs

Line level sources such as CD player radio or TV can be connected to the input sockets marked 1- 4.

Remote power-on, switching voltage

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

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

the stand-by switch (on/off) on the front panel.

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 DS. 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

short press turns the unit on, long press takes it back into standby.

Powered on, a short press activates and deactivates mute

VOL

and

VOL

adjust the sound volume

CH+

CH-

VOL+

VOL-

ON/OFF

and

select the inputs

Front panel controls

Pre Box DS

To switch on from standby or to standby

turns the unit on or back into standby (press and hold to switch into standby mode). The display shows

STANDBY when the unit is in standby.

While switching off, the unit saves the settings for input, volume and mute, to be set automatically after next

power on.

Dimming the display

Press and hold the buttons and will change the display brightness - full, half and one third.

Input selector

Pressing the buttons and repeatedly selects the inputs 1- 4in turns. The selected input will be shown in the

display.

Volume

Adjust the volume (63 steps) to the desired level using the buttons and . The volume level will be shown in

the display. -63dB indicates min., 00dB max..

Mute

While the unit is powered on, 0

ON/OFF

activates and deactivates mute .

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 DS

Frequency response: 20Hz - 20kHz (-0,3/-0,01dB)

Noise floor: -95dB (A weighted)

THD: 0,0035%

Gain: 13dB

Pre out: 1 pair RCA/phono sockets

Output voltage typically: 1V at 1kHz

Record and subwoofer out: RCA/phono sockets

Line-level inputs: 4 pairs RCA/phono sockets

Input impedance: 10kohms

Trigger: 12V DC switching voltage

Trigger output: 2-pole 2,5mm co-axial jack

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

Power consumption: 220mA 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 72 x 144 (150)mm

Weight: 1.100g 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.

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.

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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