Warranty - Pro-Ject Audio Systems Amp Box S3 CI Instructions For Use

Level
Fine tune the amount of gain. Max. gain is 37dB with Level set to max.
Bass/Treble
Adjust bass and treble response.
Bass: ± 11dB @ 20Hz
Treble: ± 5 dB @ 20kHz
Technical specifications Pro-Ject Amp Box S3 CI
Power output:
Peak power output:
Frequency response (20Hz):
Frequency response (20kHz):
Channel separation:
Noise floor:
Signal to noise ratio:
THD+N:
Gain:
Input sensitivity:
Input impedance:
Signal sensing switch
Auto Power ON switch
Trigger IN:
Trigger OUT:
Pre in:
Bypass Output:
RS-232:
Speaker connectors:
Outboard power supply:
Power consumption:
Dimensions W x H x D (D with sockets): 103 x 36 x 106 (112) mm
Weight:
Service
Should you encounter a problem which you are not able to alleviate or identify, 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 changes to any part of the product by unauthorized persons release the
manufacturer from any liability over and above the lawful rights of the customer.
Should a problem be encountered which cannot be identified or resolved, please contact point of
purchase/dealer for further advice. Only if the problem cannot be resolved there, the unit should be
sent to the responsible distributor in your country. Warranty is valid in country of purchase and for
original purchaser only and is not internationally nor personally transferable.
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© Pro-Ject Audio Systems · Amp Box S3 CI · Revision 2024.05.27
2x 34W/20W at 4 ohms/8 ohms (1% THD)
2 x 50W at 4 ohms
variable ± 11dB
variable ± 5 dB
- 68dB at 10kHz
- 65dBV ( -72dBV - 'A' weighted)
88dBV (95dBV - 'A' weighted)
<0,03% at 5W
37dB (level set to max.)
165mV/175mV at 4 Ohms/8 Ohms
10 kohms
PWR ON value: 4,2mV
PWR OFF time: 3s (if there no input signal min. 4,4mV for 3 s)
Automatic Power ON after connecting the supply voltage
12V DC switching voltage, 2-pole co-axial  2,5mm jack
12V DC voltage, 2-pole co-axial  2,5mm jack
1 pair RCA
1 pair RCA
Pluggable 3-PIN Phoenix Block
Pluggable 4-PIN Phoenix Block
20V-24V/3A DC
Pluggable 2-PIN Phoenix Block
<0,5W in standby
380 g without power supply