Pro-Ject Audio Systems Phono Box II USB User Manual

Page 6

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Technical specifications Pro-Ject Phono Box II USB

Input impedance, MM:

47kohms/120pF

Input impedance, MC:

100ohms/120pF

Gain, MM:

40dB

Output voltage typically:

300mV/1kHz at 3mV/1kHz (MM input)

Gain, MC:

60dB

Output voltage typically:

300mV/1kHz at 0,3mV/1kHz (MC input)

Max. output

9,5V (1kHz)

Noise floor, MM:

86dB (94dB - A weighted)

Noise floor, MC:

68dB (75dB - A weighted)

THD, MM:

<0,01%

THD, MC:

<0,05%

RIAA-equalisation curve accuracy:

20Hz - 20kHz / max. 0,5dB

A/D converter:

Burr Brown PCM2904 16-Bit Delta Sigma

Sampling rates:

32, 44,1 and 48kHz

USB output:

digital serial data protocol USB 1.1

Operating systems:

Windows XP

, Windows VISTA

, Windows 7

and Mac OS

THD: 0,005%
Noise floor:

96dB

Dynamic range:

93dB

Outboard power supply:

16V/200mA AC, suitable for your country's mains supply

Power consumption:

16V/100mA AC

Dimensions W x H x D (D with sockets): 103 x 36 x 103 (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 ore 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:

MM / MC mode 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.

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.

Windows XP

, Windows Vista

and Windows 7

are trademarks of the Microsoft group of companies.

Mac and Mac OS are trademarks of Apple Inc., registered in the U.S. and other countries.

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