Pro-Ject Audio Systems BOX-DESIGN Stereo Box DS2 Manuale utente

INSTRUCTIONS FOR USE

Pro-Ject Stereo Box DS2

Dear music lover,

Thank you for purchasing an integrated amplifier from Pro-Ject Audio Systems.

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 connect/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

1. Make all connections except the connection to the headphone and USB whilst the unit is

disconnected from the mains.

2. Never connect or disconnect the power supply to or from the unit whilst the power supply is connected

to the mains. Never use any other power supply than the supplied one, with the exception of dedicated

Power Boxes which can replace original power supplies.

3. Take care to connect the left and right channels of RCA inputs correctly. The right channel is usually

marked red, the left channel black or white.

4. Speaker connections for the left speaker are located on the right hand side of rear view above,

connections to right speaker are located on the left side. Speaker connectors marked red represent +

according indicators on speaker terminal.

Mains power connection and methods to switch the unit on and off

Connect the low voltage plug from the power supply to the Power 36V DC socket of the unit before

connecting the power supply to the mains. Stereo Box DS2 can be switched on and off by using 2 different

methods which are equal in priorities.

1. Using front pushbutton to switch on or into standby

The pushbutton on the front panel of the unit alternately turns the power on or returns it to standby mode. The

blue LED on the front panel shows that the unit is powered on. If a trigger signal is present Stereo Box DS2

can’t be switched off by the pushbutton.

2. Remote power on - triggers

Stereo Box DS2 can be switched on via other Box Design components when a 12V trigger voltage is present

at the 2.5mm socket marked Trigger Input. Special power-on cables (polarity ) in diverse lengths are

available as accessories. The remote power-on signal can be relayed to further units via the Trigger Output

socket. When the 12V trigger signal is switched off, Stereo Box DS2 will also switch off.

Trigger cables may only be plugged into the sockets when the amplifier is disconnected from the power

supply and from the mains. Failure to do so may result in damage of the unit.

Line output

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

Record output, connecting a headphone amplifier

Fix Output connects an analogue record device or a Pro-Ject Head Box headphone amplifier.

Connection to the speakers

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

naked wire.

Phono input

Connect the tonearm signal lead to the Phono input of the amplifier. The MM/MC switch on the back panel

allows to adapt to connected cartridge type. The earthing wire may be connected to the screw terminal if you

encounter hum problems when using the turntable.

Line inputs

Line level sources such as CD player, radio or TV can be connected to the input sockets marked In2, In3 or

In4.

Remote control

turns the unit on or back into standby

and adjust the sound volume

- and select the inputs

Blank button confirms Bluetooth pairing

Activate/deactivate mute

ON/OFF

VOL

Front panel controls

Input selector

After the unit is powered on, pressing the buttons◄ and ►next to the LEDs inputs indicators select desired

input.

Volume

Adjust the volume to the desired level, using the large knob on the front panel.

Connecting a headphone

Connect the headphones to the ¼“ (6,3mm ) jack socket on the front of the unit. Once headphone jack is

connected into the socket, rear panel outputs are muted.

+6dB button

gain of the preamplifier for all inputs is increased by 6dB if pressed

Bluetooth connection

Make sure the antenna is attached to its connector In5 BT on the back panel prior using Bluetooth. If the Pair

LED is on, active audio connection with Bluetooth device is established.

Pairing with Android devices

Open Settings and tap on Bluetooth. Turn on Bluetooth and tap on Scan. Searched devices will show up.

Tap on Stereo Box DS2 and confirm presented pairing code on your Android device. Then press Pair button

on MaiA DS (alternatively Blank button on remote control) when the blue Pair LED starts blinking. When

paired with Stereo Box DS2, your Android device will show "Connected to media Audio". Now you can play

music from your Android device over Bluetooth to Stereo Box DS2.

Older devices may request a pairing code. Enter "0000" and confirm. No more confirmation on

Stereo Box DS2 is then needed.

Bluetooth pairing with Apple devices

Tap on Settings, tap on Bluetooth, turn on Bluetooth. Your device will automatically start searching for

available devices. Tap on Stereo Box DS2 and confirm by pressing Pair button on Stereo Box DS2

(alternatively Blank button on remote control) when the blue Pair LED of is blinking.

A new connection is only possible if the Pair LED is off (it indicates that no device is connected).

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 DS2

Power Output @ THD+N=1%: 2 x 135W/4 ohms and 2 x 80W/8 ohms

Channel separation: > 65dB at 10kHz

Noise floor: > -85dB (20Hz –20kHz)

THD+N: < 0,03% @ 3W

Gain: 32 dB (measured via line level input),

Frequency response: 20Hz - 25kHz (max. deviation -0,1dB +0,2dB)

Headphone amp

Power Output @ THD+N=1%: 200mW (into 300ohms)

Signal to noise ratio -110dB

THD +N < 0,05%

Gain 11dB

Crosstalk 65dB

Frequency response 20Hz - 80kHz (+- 0,2dB)

Line level inputs: 3 pairs RCA cinch connectors

Line input sensitivity: 320mV(78W/8 Ohms)

Line input sensitivity + 6 dB: 160mV (78W/8 Ohms)

Line input impedance: 50kohms

Phono input: 1 pair RCA

Phono input sensitivity: suitable for MM, MI and MC cartridges

Phono input impedance: MM 47k ohms / MC 100 ohms

Phono input gain: MM 42 dB/ MC 58 dB

Variable line level output: 1 pair RCA

Bluetooth range: 10 meters in direct visibility between source and receiver

Trigger input: 12V on/off detector

Tigger output: 12V

Outboard power supply: 36V/5,5A DC, suitable for your country's mains supply

Replacement battery remote control: 1 x CR2032 / 3V or 1 x CR2025 / 3V

Dimension (W x D x H): 206 x 240 x 71 aluminium;

240 x 240 x 72 wood

Weight (without power supply): 1 770 g aluminium,

2 000 g wood

Service

Should you encounter a problem which you are not able to alleviate or identify, please contact your dealer for

further advice. Only if the problem cannot be resolved there, the unit should 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 changes 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 Audio Systems is a registered Trademark of

H. Lichtenegger.

This guide was produced by: Pro-Ject Audio Systems

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.

Windows®, Windows XP®, Windows Vista®, Windows 7®, Windows 8®, Windows 10®are trademarks of the

Microsoft group of companies. Mac®and Mac OS®are trademarks of Apple Inc., registered in the U.S. and

other countries. TOSlink®is a registered trademark of Toshiba corporation. DSD and the DSD logo are

trademarks of Sony Corporation.

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