© Audio Trade GmbH · Pro-Ject Tube Box S · Revision 2013.1.15
5
Technical specifications Pro-Ject Tube Box S
A
Typical for low output MC cartridges,
B
typical for MM or high output MC cartridges
* Input capacitance is irrelevant for low-output MC cartridges
Tubes:
2 x ECC83 (12AX 7A)
Input impedance:
10ohms, 100ohms, 1kohm, 2kohms
A
Input capacitance/impedance:
50pF, 150pF, 270pF and 370pF */47kohms
B
Together with other input impedance settings without any influence!
Input gain:
41dB
B
/ 51dB and 61dB
A
Noise floor:
94dB (A weighted) at 41dB input gain
75dB (A weighted) at 51dB and 61dB input gain
THD:
<0,01% at 41dB input gain
<0,05% at 51dB and 61dB 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/1.000mA DC, suitable for your country's mains supply
Power consumption:
470mA DC, <1W in standby
Dimensions W x H x D (D with sockets): 103 x 74 x 125 (137)mm
Weight:
810g 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.
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