Pro-Ject Audio Systems Stereo Box DS3 Manuale utente
INSTRUCTIONS FOR USE
Stereo Box DS3
© Pro
-Ject Audio Systems · Stereo Box DS3 · Revision 19.12.2022
2
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 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 DS3 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 DS3
can’t be switched off by the pushbutton.
© Pro-Ject Audio Systems · Stereo Box DS3 · Revision 19.12
.2022
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2. Remote power on - triggers
Stereo Box DS3 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 DS3 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, active loudspeakers or an active subwoofer can be connected to the output sockets marked
Var Output.
Fix Line Output
Fix Output connects an analogue record device or a 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 (CD player, radio or TV) can be connected to the inputs marked In 2, In 3 or In 4.
Front panel controls
Input selector
After the unit is powered on, pressing the buttons◄and ►selects the desired input. The LEDs show which
input is currently active.
Volume
Adjust the volume to the desired level, using the large knob on the front panel.
+
© Pro
-Ject Audio Systems · Stereo Box DS3 · Revision 19.12.2022
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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 In 5 BT on the back panel prior using BLUETOOTH®.
Only use the supplied antenna!
BLUETOOTH® is active only when input 5 is selected. If you want to connect your device the first time activate
the pairing mode by pressing and hold the button ►(pair) until LED 5 starts blinking. The Stereo Box is now
visible & ready to pair for 60 seconds.
Pairing with Android devices
Open Settings and turn on BLUETOOTH®. Start a Scan for BLUETOOTH® devices. Searched devices will
show up. Tap on "Stereo Box DS3" and confirm presented pairing code on your Android device. When the
connection was successful, the LED of Input 8 lights up continuously. Now you can play music from your
Android device over BLUETOOTH® to Stereo Box DS3.
BLUETOOTH® pairing with Apple devices
Tap on Settings and turn on BLUETOOTH®. Your device will automatically start searching for available
devices. Tap on "Stereo Box DS3" and confirm the connection. When the connection was successful, the LED
of Input 5 lights up continuously.
BLUETOOTH® pairing with Windows smartphones
Open Settings and turn on BLUETOOTH®. A scan for available devices starts automatically. Searched devices
will show up. Tap on "Stereo Box DS3" and confirm presented pairing code on your Windows device. When
the connection was successful, the LED of Input 5 lights up continuously. Now you can play music from your
Windows device over BLUETOOTH® to Stereo Box DS3.
Stereo Box DS3 can store up to 8 BLUETOOTH® devices. If the memory is full, new connections will
automatically replace the oldest connection. A new connection is only possible if the LED of BT input is
blinking slowly (it indicates that no device is connected). You can reset & clear the BLUETOOTH®
module by holding the ◄button and then turn the unit on. The LED 5 will quickly flash & the device
will then turn on after the reset is completed.
Remote control
ON/OFF turns the unit on/off
VOL-turns the volume down
VOL+ turn the volume up
CH-select the input down
CH+ select the input up
MUTE activates and deactivates mute
© Pro-Ject Audio Systems · Stereo Box DS3 · Revision 19.12
.2022
5
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: 2x AAA 1,5V
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 DS3
Power output: 2x 150W/80W at 4/8 ohms (1%THD)
Frequency response (20Hz-20kHz): - 0,1dB at 20Hz, +0,3dB at 20kHz
Channel separation: - 73dB at 10kHz
Signal to noise ratio PA output: >98dB (105 dB - 'A' weighted) at 1kHz
Signal to noise ratio Variable output: >117dB (120 dB - 'A' weighted) at 1kHz
THD: < 0,01% at 10W
Line level inputs: 3 pair RCA (sensitivity: 860 mV)
Line input impedance: 50 kohms
Line input gain: 29 dB), + 6 dB
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 40dB / MC 60dB
Fix line level output: 1 pair RCA
Variable line level output: 1 pair RCA
BLUETOOTH® version: 5.0
BLUETOOTH® music receiver codec: aptX, aptX HD, A2DP profile
Speakers connectors: ∅ 4mm banana plugs, spades connectors or naked wire
Headphone amplifier: 1x 6.3mm stereo JACK
Headphone amplifier output: 2 x 450mW at 32ohm (1%THD)
Frequency response (20Hz-50kHz): -0,1dB at 32 ohms
Min. recommended impedance: 16 Ohm
Trigger input: 12V on/off detector
Tigger output: 12V
Outboard power supply: 36V/5,5A DC suitable for your country's mains supply
Power consumption in standby: <0.5W
Replacement battery remote control: 2x AAA 1,5V
Dimensions W x H x D (D with sockets): 206 x 71 x 211 (223) mm
Weight: 1800 g without power supply
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.
© Pro
-Ject Audio Systems · Stereo Box DS3 · Revision 19.12.2022
6
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 ©2022. 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.
BLUETOOTH®® is a trademark owned by the BLUETOOTH® SIG, Inc., , Microsoft®, Windows®, are either
registered trademarks or trademarks of Microsoft Corporation, Apple is registered trademark of Apple Inc.,
Android™ is a trademark of Google Inc.
Waste from Electrical and Electronic Equipment (WEEE): This directive mandates the collection and recycling
of electronics and component materials in order to reduce the amount going to landfills. Outside North
America, when the user decides to discard this product, it must be sent to a separate collection facility for
recycling. Please contact your point of purchase for more details.
Federal Communication Commission (FCC) Interference Statement FCC Part 15: This equipment has been
tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio communications. However,
there is no guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the equipment off
and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna
- Increase the separation between the equipment and receiver
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected
- Consult the dealer or an experienced radio/TV technician for help.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
This device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation. FCC Radiation Exposure Statement: This equipment
complies with FCC radiation exposure limits set forth for an uncontrolled environment.
To maintain compliance with FCC´s RF exposure guidelines, this equipment should be installed and operated
with minimum distance 20cm between the radiator and your body. Use on the supplied antenna.
Contains FCC ID: 2AWO-FSCBT1026
© Pro-Ject Audio Systems · Stereo Box DS3 · Revision 19.12
.2022
7
Declaration of Conformity
We, Canor spol. s r.o.
Družstevná 13925/39
08006 Prešov
Slovakia
(manufacturer)
and
Pro-Ject Audio Systems a division of Audio Tuning GmbH
Margaretenstrasse 98
1050 Vienna,
Austria
(distributor)
declare under our responsibility that the product is in conformity with the provisions of Directives:
2014/35/EU including amendments
2014/30/EU including amendments
2014/53/EU including amendments
The following harmonised standards were applied:
Health: EN62479:2010
Safety: EN60950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013, EN62368-1:2014/A11:2017,
EN61558-1:2005/A1:2009, EN61558-2-16:2009/A1:2013
EMC: EN301489-1 V2.2.0: 2017-03, EN301489-17 V3.2.0:2017-03, EN55032:2015, EN55035:2017,
EN61000-3-2:2014, EN61000-3-3:2013
Radio Spectrum: EN300328 V2.1.1 (2016-11)
Pro-Ject Audio Systems a division of Audio Tuning GmbH
1050 Vienna, Austria, Margaretenstrasse 98
info@project-audio.com
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