Pro-Ject Audio Systems Pre Box DS2 Analogue User manual

INSTRUCTIONS FOR USE
Pro-Ject Pre Box DS2 Analogue

© Pro-Ject Audio Systems · Pro-Ject Pre Box DS2 Analogue · Revision 2018.09.13
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Dear music lover,
thank you for purchasing this 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 connect or 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
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.
Fix Output
Fix Output connects an analogue record device or a headphone amplifier like a Pro-Ject Head Box.
Var Output
A power amplifier or active loudspeakers can be connected to the output sockets marked Var Output.
Subwoofer output
An active subwoofer may be connected to the output sockets marked Sub Out.
Inputs
The unit has 5 line level RCA inputs marked In1- In 5.
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© Pro-Ject Audio Systems · Pro-Ject Pre Box DS2 Analogue · Revision 2018.09.13
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Mains power connection and methods to switch the unit on and off
Connect the low voltage plug from the power supply to the Power 18V socket of the preamplifier before
connecting the power supply to the mains. The unit 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 the unit can’t be
switched off by the pushbutton.
2. Remote power on - triggers
The unit 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, the unit will also switch off.
Trigger cables may only be plugged into the sockets when the unit is disconnected from the power
supply and from the mains. Failure to do so may result in damage of the unit.
Remote control
POWER turns the unit on or back into standby
MUTE has no function on Pre Box DS2 Analogue
CH+/CH- select the inputs in turn
1-5 access to a specific input directly
+

© Pro-Ject Audio Systems · Pro-Ject Pre Box DS2 Analogue · Revision 2018.09.13
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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.
Gain switch
The button +6dB increase gain by 6dB when pressed.
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.
Universal-Remote Control-it DS/RS
Control-it DS/RS is optionally available and allows you to comfortably control this and many other Pro-Ject
Box Design products on one remote.

© Pro-Ject Audio Systems · Pro-Ject Pre Box DS2 Analogue · Revision 2018.09.13
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Technical specifications Pro-Ject Pre Box DS2 Analogue
Frequency response: 20Hz - 20kHz (-0,2/-0dB)
Noise floor: -95dB (A weighted)
THD: 0,001%
Gain: 13dB / 19dB (13+6dB) switchable for all inputs
Pre out: 1 pair RCA/phono sockets
Output voltage typically: 1V at 1kHz (2V with +6dB gain)
Fix and subwoofer out: RCA/phono sockets
Line-level inputs: 5 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
Replacement battery remote control: 1 x CR2032 / 3V or 1 x CR2025 / 3V
Dimensions W x H x D (D with sockets): Aluminium version: 206 x 71 x 220 mm
Wood version: 240 x 72 x 220 mm
Weight: Aluminium version: 1430 g without power supply
Wood version: 1880 g 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 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.
Copyright, trademarks
Pro-Ject Audio Systems is a registered Trademark of
H. Lichtenegger.
This guide was produced by: Pro-Ject Audio Systems
Copyright ©2017. 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.