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INSTRUCTIONS FOR USE
Pro- Ject Head Box DS2 B

© Pro-Ject Audio Systems · Pro- 7.4.6 Ject Head Box DS2 B · Revision 201
2
Dear music lover,
thank you for purchasing this -Pro Ject Audio Systems´ headphone 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 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.
Connections
Make all connections,
ex
ex
ex
exexcept t
cept t
cept t
cept tcept the co
he co
he co
he cohe connectio
nnectio
nnectio
nnectionnection to th
n to th
n to th
n to thn to the headp
e headp
e headp
e headpe headphone
hone
hone
honehone
, whilst the unit is disconnected from
the mains 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.
Connection to the amplifier / signal sources
Connect the Fixed output from your amplifier to the Input RCA/phono sockets of the headphone amplifier.
For balanced (symmetrical) connections use corresponding
Input
Input
Input
InputInput
XLR sockets
A s s s nalogue sourcessignal like CD player , streamer or tuner can be connected to the Input sockets directly.
Bypass output
The XLR and RCA socket marked
Bypass
Bypass
Bypass
BypassBypass
can be connected to the input sockets of your recorder.
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
Power 18V
Power 18V
Power 18VPower 18V
socket of the headphone amplifier
bef
bef
bef
befbefore
ore
ore
oreore
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.

© Pro-Ject Audio Systems · Pro- 7.4.6 Ject Head Box DS2 B · Revision 201
3
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
Tri
Tri
Tri
TriTrigger Inpu
gger Inpu
gger Inpu
gger Inpugger Input.
t.
t.
t.t.
- 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 Out
Trigger Out
Trigger Out
Trigger OutTrigger Output
put
put
putput
socket. When the 12V trigger signal is switched off, the unit will also switch off.
Trigger cables may only be plugged into the sockets is disconnected from the power when the unit
supply and from the mains. Failure to do so may result in damage of the unit.
Front panel controls
Input selector
Pressing
Input
Input
Input
InputInput
button selects the Balanced XLR - (
Bal.
Bal.
Bal.
Bal.Bal.
) or Unbalanced - (RCA
Unb
Unb
Unb
UnbUnbal.
al.
al.
al.al.
) inputs.
Connecting a headphone
Connect the headphones to the ¼“ ( front panelunbalanced 6,3mm ∅) jack socket on the left side of the .
Balanced Headphones connector is located on the right side of the front panel.
Gain
Gain of the amplifier can be set in 4 steps (0dB, 3dB, 9dB or 12dB) for unbalanced input and (6dB, 9dB,
15dB or 18dB) for balanced input. Use the buttons
◄►next to the LED´s to set the desired gain.
Current Setting
Button
Curr
Curr
Curr
CurrCurrent Setti
ent Setti
ent Setti
ent Settient Setting
ng
ng
ngng
adjust the output current of the headphone amplifier in 3 steps:
High
High
High
HighHigh
,
Mid
Mid
Mid
MidMid
and
Low
Low
Low
LowLow
.
I ndicated by corresponding LED.
Volume
Adjust the volume to the desired level using the knob on the front panel.
Please set the volume level to minimum before connecting the headphone.
+
Produktspecifikationer
Varumärke: | Pro-Ject |
Kategori: | mottagare |
Modell: | Head Box DS2 B |
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