Pro-Ject Audio Systems Stereo Box DS Manuale utente

INSTRUCTIONS FOR USE

Pro-Ject Stereo Box DS

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.

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 cord is

used to disconnect the unit from the mains. Make sure that the power cord is easily accessible at all

times. Never handle the device, the power cord/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

In USB

24V

Make all connections, except the connection to the computer, whilst the unit 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 1- 4.

USB input

A computer, used as a source, can be connected to the USB input.

Connection to the speakers

The output terminals accept loudspeaker cables terminated with 4mm Banana plugs, spades connectors

or naked wire.

Mains power connection

Connect the low voltage plug from the power supply to the 24V= socket of the amplifier 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

Stereo Box DS

To switch on from standby or to standby

on the front turns the unit on or back into standby. 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 Input Select buttons and selects the inputs 1- 4in turns. The selected input will be shown in

the display.

Volume

Adjust the volume (95 steps) to the desired level using the buttons and . The volume level will be shown in

the display. -95dB indicates min., 00dB max..

Mute

While the unit is powered on, 0

ON/OFF

activates and deactivates mute .

Connecting to a Computer

Connect the USB-input of the amplifier (unit must be switched on) to a free USB-socket on your computer

and turn it on/make sure it is powered on. The amp will be automatically recognised by the computer. There is

no need to install a driver manually.

Please note: Connection should be made to an USB-socket of your computer directly. Connecting to

USB-hubs or switches can cause problems.

Potential incorrect use and fault conditions

No signal on one or both channels:

No connection between headphone and headphone amplifier ore amplifier. This could be due

to a faulty plug, broken wire or solder joint or simply loose plug/socket connection.

Headphone does not work:

Headphone volume control is at minimum.

Amplifier Tape-Monitor circuit is not activated.

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 DS

Power output: 2 x 35W/60W at 8 ohms/4 ohms (both channels driven)

Frequency response: 20Hz - 20kHz (-0,1dB, +0,2dB)

Channel separation: >65dB at 20kHz

Noise floor: >100dB (A weighted)

THD: 0,1% at 10W

Gain: 33dB

Line-level inputs: 4 pairs RCA/phono sockets

Input sensitivity: 350mV

Input impedance: 100kohms

USB-input: Mini B socket. USB cable supplied

USB signal: Digital serial data protocol USB 1.1

D/A converter: Texas Instruments PCM2706. 16-Bit /48kHz Delta Sigma,

128-times oversampling

Supported audio format: PCM (LPCM). No support for formats like Dolby®Digital or DTS™

Sampling rates: 44,1kHz and 48kHz

Speaker connectors: 4mm banana plugs, spades connectors or naked wire

Outboard power supply: 24V/5A DC, suitable for your country's mains supply

Power consumption: 5A 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 104 (122)mm

Weight: 670g 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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