Pro-ject Audio Phono Box DS2 USB User Instruction

Pro-Ject Phono Box DS2 USB

INSTRUCTIONS FOR USE

Dear music lover,

AC outlet voltages vary from country to country. Before connecting to the mains, make sure that the

be used in damp or wet locations, next to a bathtub, sink, swimming pool or any other similar conditions.

gram, disc

RIAA

Never use any other power supply than the one supplied with the unit.

phono 1

Phono 2

Line 3

thank you for purchasing this 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

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. 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

Never handle the device, the power supply while your hands are wet or damp.

Connectors

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

on the amplifier.

Connecting of record players

Connect left and right channels of the tonearm signal lead to the sockets marked phono amplifier. It is possible to connect 2 record players at once or connect 2 tonearms from a turntable equipped by 2 tonearms. The earthing wire(s) may be connected to the screw terminal if you encounter hum problems when using the record player.

Line level input

Any line level source of signal can be connected to the preamplifier using and then converted to digital data using coaxial S/PDIF output or USB output.

socket on the backpanel

)

of the

Connection to the amplifier

Output

AUX, CD, Tuner, Tape

Video

Power 18V

before

Trigger Input.

Trigger Output

Loading Ω, Loading pF, Gain dB

output MC

idges), into which the

cartridge is designed to work. If in doubt please consult your dealer.

supply and from the mains. Failure to do so may result in damage of the unit.

Connect the amplifier. Alternatively connect the S/PDIF digital output to the corresponding digital input of the amplifier or soundbar.

of the phono amplifier to a line input (such as

) on your

Mains power connection and methods to switch the unit on and off

Connect the low voltage plug from the power supply to the 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.

socket of the preamplifier

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 available as accessories. The remote power-on signal can be relayed to further units via the socket. When the 12V trigger signal is switched off, the unit will also switch off.

Special power-on cables (polarity ) in diverse lengths are

Trigger cables may only be plugged into the sockets when the unit is disconnected from the power

Front panel

Settings

The three function keys input capacitance and input gain. All settings are stored automatically.

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 (lowcartridges) and the correct input capacitance (high-output MC and MM cartr

on the right hand side are used to set input impedance,

Loading Ω (input impedance)

Loading Ω

Loading pF

100, 220

320

Ortofon 2M Red

Ortofon X5-MC

Ortofon Rondo Red

Input

USB Out

Sampling kHz

S/PDIF Out.

USB Out

S/PDIF Out

USB Out.

The button 100Ω-200Ω-1kΩ or 47kΩ for high output MC and MM cartridges)

sets the input impedance to desired value (low output MC cartridges: 10Ω-20Ω-50Ω-

Loading pF (input capacitance)

The button irrelevant for low-output MC cartridges)

sets the capacitance for high output MC and MM cartridges. (Input capacitance is

- all LEDs off = 47pF. LEDs pF

and

- readout always + 47pF

Gain dB

Gain for the outputs can be set from 40dB to 65dB in steps of 5dB or 10dB. Any change will be automatically stored for the chosen input, when input is changed or the unit is switched into standby mode.

Examples of typical settings

(MM)

(High-Output MC)

(Low-Output MC)

 input impedance: 47kohms  input capacitance: 100pF  input gain: 40dB

 input impedance: 47kohms  input capacitance: 320pF  input gain: 50dB

 input impedance: 10ohms.  input capacitance is irrelevant  input gain: 60dB

Input selector

After the unit is powered on, operating the push button indicated by the corresponding LED:

1 – Phono 1 2 – Phono 2 3 – Line 3

selects the inputs. The selected input will be

Sampling frequency

corresponding LED.

If 192kHz, then frequency (352,8kHz or 384kHz) deactivate S/PDIF Out and allows to record in DSD128 format. (frequency always indicated by corresponding LED´s).

is not in use: The push button

Available settings are 48/96/192kHz. The selected frequency will be indicated by the

is connected and active, sampling rate is set from computer. If frequency is set to 48, 96 or

is active and is set to the same frequency as

selects the frequency of digital output signal for

Setting computer to higher

Subsonic

The push button turns on and off subsonic filter

Setting the record level

Record level knob on a front panel set the level of analogue signal going to the A/D converter. Clipping LED indicates when the level is too high and signal is distorted.

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