Pro-Ject Audio Systems Amp Box RS Mono User manual

INSTRUCTIONS FOR USE
Pro-Ject Amp Box RS Mono

© Pro-Ject Audio Systems · Pro-Ject Amp Box RS Mono · Revision 2013.1.15
2
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.
Tube produces heat. Proper ventilation has to be guaranteed all the time. The unit must not be stacked.
Connectors
!
Make all connections whilst the amplifier is disconnected from the power supply.
Do not connect RCA and XLR inputs simultaneously.
Wiring XLR sockets: 1 ground, 2 “hot” and 3 “cold”.
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.
Connection to the preamplifier
The socket In is for connecting the cables from your pre-amp or AV processor. The push button next to the input
socket, selects the inputs.
Connection to the speakers
The output terminals accept loudspeaker cables terminated with 4mm Banana plugs, spades connectors
or naked wire.
In
PUSH
2x48V=
Amp Box RS mono
RCA
XLR
In
Pro-Ject Audio Systems, Vienna, Austria

© Pro-Ject Audio Systems · Pro-Ject Amp Box RS Mono · Revision 2013.1.15
3
Mains power connection
Connect the low voltage plug from the power supply to the 2x48V= socket of the amplifier before
connecting the power supply to the mains.
To switch on from standby or to standby
The switch on the left hand side of the front panel turns the unit on or back into standby. The blue LED above
the stand-by switch shows that the unit is switched on.
!
After switching on, the tubes need a short time to reach the correct operating temperature. During
warm up the blue LED above the stand-by switch is blinking.
We recommend to set the pre amplifies volume control to 0, prior to switching on.
Technical specifications Pro-Ject Amp Box RS Mono
Tubes: 1 x ECC88 (6922)
Power output: 120W/180W at 8 ohms/4 ohms
Frequency response: 20Hz - 50kHz (-0,8dB, -3dB)
Channel separation: >100dB bei 20kHz
Noise floor: >-100dB (A weighted)
THD: <0,05% at 100W
Gain: 26dB
Pre in: 1 RCA/phono socket
1 XLR socket. Wiring: 1 ground, 2 “hot” and 3 “cold”
Input sensitivity: 1,35V
Input impedance: 22kohms
Speaker connectors: 4mm banana plugs, spades connectors or naked wire
Outboard power supply: ±48V/2,5A DC, suitable for your country's mains supply
Power consumption: 2,5A DC, <1W in standby
Dimensions W x H x D (D with sockets): 206 x 72 x 200 (220)mm
Weight: 1.890g 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 ©2012. 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.