Pro-Ject Audio Systems Pro-Ject Phono Box S Manual de usuario
INSTRUCTIONS FOR USE
Pro-Ject Phono Box S
© Audio Trade GmbH · Pro-Ject Phono Box S · Revision 2013.1.15
2
Dear music lover,
thank you for purchasing a PRO-JECT AUDIO phono 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.
Settings
Use the dip switches at the bottom of the unit to set input gain, input capacitance and input impedance.
Please set both channels equally.
To find out which type your cartridge is please consult the literature accompanying your cartridge.
The literature for cartridges should also specify the correct input impedance (low-output MC cartridges) and
the correct input capacitance (high-output MC and MM cartridges), into which the cartridge is designed to
work. If in doubt please consult your dealer.
!
To alter settings the unit must be disconnected from the power supply and the amplifier.
Examples of typical settings
Ortofon 2M Red (MM)
input gain 40dB, input capacitance 200pF, input impedance 47kohms
100
220
pF
pF
GAIN
ON
12345678
10
100
1k
Ortofon X5-MC (High-Output MC)
input gain 43dB, input capacitance 420pF, input impedance 47kohms
100
220
pF
pF
GAIN
ON
12345678
10
100
1k
Ortofon Rondo Red (Low-Output MC)
input gain 60dB, input capacitance *, input impedance 10ohms.
* Input capacitance is irrelevant for low-output MC cartridges
100
220
pF
pF
GAIN
ON
12345678
10
100
1k
© Audio Trade GmbH · Pro-Ject Phono Box S · Revision 2013.1.15
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Input impedance / input capacitance – high-output MC and MM cartridges
ON
12345678
220
pF
pF
100
ON
78
ON
78
100pF 200pF
ON
78
ON
78
320pF 420pF
ON
47k
456
+
10
100
1k
Input impedance – low-output MC cartridges
* Input capacitance is irrelevant for low-output MC cartridges
ON
12345678
10
100
1k
ON
456
10
ON
456
ON
456
100 1k
Input gain
ON
123
ON
123
40dB 43dB
ON
123
ON
123
60dB 63dB
GAIN
ON
12345678
Subsonic filter
ON
OFF
Subsonic
A switch at the back of the phono amplifier activates and deactivates the subsonic filter.
© Audio Trade GmbH · Pro-Ject Phono Box S · Revision 2013.1.15
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Connectors
Pro-Ject Audio Systems, Vienna, Austria
18V
ON
OFF
Subsonic
!
Make all connections whilst the phono amplifier 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.
Do not connect the phono amplifiers output to a phono input (sometimes labelled gram, disc or RIAA)
on the amplifier.
Never use any other power supply than the one supplied with the unit.
Connecting the record player
Connect the tonearm signal lead to the In of the phono amplifier. The earthing wire may be connected to the
screw terminal if you encounter hum problems when using the record player.
Connection to the amplifier
Connect the Out of the phono amplifier to a line input (such as AUX, CD, Tuner, Tape or Video) on your
amplifier.
Mains power connection
Connect the low voltage plug from the power supply to the Power 18V "socket of the phono amplifier before
connecting the power supply to the mains.
Stand-By
The button on the front panel of the unit alternately turns the power on or returns it to standby mode. The blue
LED above the stand-by push button shows that the unit is switched on.
© Audio Trade GmbH · Pro-Ject Phono Box S · Revision 2013.1.15
5
Technical specifications Pro-Ject Phono Box S
ATypical for low output MC cartridges, Btypical for MM or high output MC cartridges
* Input capacitance is irrelevant for low-output MC cartridges
Input impedance: 10ohms, 100ohms, 1kohm A
Input capacitance/impedance: 100pF, 200pF, 320pF and 420pF */47kohms B
Together with other input impedance settings without any influence!
Input gain: 40 and 43dB B / 60 and 63dB A
Noise floor: 94dB (A weighted) at 40dB and 43dB input gain
75dB (A weighted)at 60dB and 63dB input gain
THD: <0,01% at 40dB and 43dB input gain
<0,05% at 60dB and 63dB input gain
RIAA-equalisation curve accuracy: 20Hz - 20kHz / max. 0,4dB
Subsonic filter: at 20Hz with 12dB/octave
Input: 1 pair RCA/phono sockets
Line-level output: 1 pair RCA/phono sockets
Outboard power supply: 18V/500mA DC, suitable for your country's mains supply
Power consumption: 85mA DC, <1W in standby
Dimensions W x H x D (D with sockets): 103 x 36 x 104 (115)mm
Weight: 570g without power supply
Potential incorrect use and fault conditions
No signal on one or both channels:
No connection between player and phono amplifier or amplifier. This could be due to a faulty plug,
broken wire or solder joint or simply loose plug/socket connection.
Strong hum:
No earth connection from cartridge or arm, or arm cable to phono amplifier, or earth loop.
Output too quiet or too loud, or distorted:
Input gain incorrectly set - input overloading or insufficiently amplified.
Service
Should you encounter a problem which you are not able to alleviate or identify despite the above information,
please contact your dealer for further advice. Only when the problem cannot be resolved there should the
unit 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 change 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
PRO-JECT is a Registered Trademark of H. Lichtenegger.
This guide was produced by: Audio Trade GmbH
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.
Este manual sirve para los siguientes modelos
1
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