Pro-Ject Audio Systems Phono Box RS Manuale utente

INSTRUCTIONS FOR USE

Pro-Ject Phono Box RS

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.

Front panel controls

1200

1100

1000

700

400

200

150

130

100

Ohm

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.

Mute

ON/MUTE activates and deactivates mute

Selecting the de-emphasis curve

RIAA /DECCA selects the desired mode

Settings

Use the dip switches, the switch RCA /XLR at the back of the unit and the rotary control at the front to set

input gain, input capacitance and input impedance. Please set both channels equally.

To alter settings MUTE must be engaged. Input impedance setting (variable) can be done while

listening.

Examples of typical settings

Ortofon 2M Red (MM) - input gain 40dB, input capacitance 200pF, input impedance 47kohms

Ortofon X1-MC (high-output MC) - input gain 50dB, input capacitance 420pF, input impedance 47kohms

Ortofon Rondo Red (low-output MC) - input gain 60dB, input capacitance *, input impedance 10ohms

Input / output connectors, input gain

RCA /XLR select the connectors to be used. Input gain for RCA can be set to 60, 50 or 40dB. The possible

settings for XLR are 66, 56 and 46dB.

RCA

XLR

60 66

Input impedance, variable – low-output MC cartridges

* Input capacitance is irrelevant for low-output MC cartridges

The switch F/Vmust be set to V

1200

1100

1000

700

400

200

150

130

100

Ohm

Input capacitance, variable – high-output MC and MM cartridges

The switch F/Vmust be set to F

200pF 300pF 420pF 520pF

100pF

220pF

10R

47k

Fixed

234

100pF

234

Input impedance, fixed – low-output MC cartridges

* Input capacitance is irrelevant for low-output MC cartridges

The switch F/Vmust be set to F

10 Ohm

100pF

220pF

10R

47k

Fixed

234

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.

Connectors

Subsonic

Filter

OFF

Pro-Ject Audio Systems, Vienna, Austria

Right Left

InputOutput Output

Input

100pF

220pF

10R

47k

Fixed

100pF

220pF

10R

47k

Fixed

RCA

XLR

Power

2x18V=

PUSH PUSH

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.

Selecting input / output connectors

RCA/XLR select the connectors to be used

Subsonic Filter

Subsonic Filter ON/OFF activates and deactivates the filter

Connecting the record player

Connect the tonearm signal lead to the Input 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 Output of the phono amplifier to a line input (such as AUX, CD, Tuner, Tape or Video) on your

amplifier.

Mains power connection

The phono amplifier is supplied with a power supply suitable for your country's mains supply. Check the label

before connecting to ensure compliance with the mains rating in your house. Connect the low voltage plug

from the power supply to the Power 2x18V "socket of the phono amplifier before connecting the power

supply to the mains.

Technical specifications Pro-Ject Phono Box RS

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, variable: stepless 10ohms - 1.200ohms A *

Input capacitance/impedance:, variable: 100pF, 200pF, 300pF, 420pF and 520pF/47kohms B

Input impedance, fixed: 10ohms A *

Input gain (+ 6dB using XLR sockets): 40dB and 50dB B

60dB A

Noise floor: 80dB (91dB – IEC -A)

THD: 0,019%

De-emphasis curves accuracy: 20Hz - 20kHz / max. 0,3dB

Subsonic filter: at 20Hz with 12dB/octave

Input: 1 pair RCA/phono sockets, 1 pair XLR sockets

Line-level output: 1 pair RCA/phono sockets, 1 pair XLR sockets

Outboard power supply: 2 x 18V/250mA DC, suitable for your country's mains supply

Power consumption: 150mA DC, <1W in standby

Dimensions W x H x D (D with sockets): 206 x 72 x 200 (210)mm

Weight: 2.000g 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.

PRO-JECT is a Registered Trademark of H. Lichtenegger.

This guide was produced by: Audio Trade GmbH

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.

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