© Pro-Ject Audio Systems · Pro-Ject Phono Box DS3 B · Revision 2021.10.27
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Mains power connection and methods to switch the unit on and off
Connect the low voltage plug from the power supply to the Power 18V socket of the preamplifier before
connecting the power supply to the mains.
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 Trigger Input. Special power-on cables (polarity:
) in diverse lengths are
available as accessories. The remote power-on signal can be relayed to further units via the Trigger Output
socket. When the 12V trigger signal is switched off, the unit will also switch off.
Trigger cables may only be plugged into the sockets when the unit is disconnected from the power
supply and from the mains. Failure to do so may result in damage of the unit.
Settings
Input
Selects balanced (5-pin mini XLR or XLR) or unbalanced (RCA) input.
2 turntables can be connected to the preamplifier and this button acts as input selector, settings for
each input are stored in memory.
Cartridge settings
The three push buttons on the right-hand side are used to set input impedance (Loading Ohms), input capacitance
(Loading pF) and input gain (Gain dB).
The button Loading Ohms must be set to Variable for using rotary controller. Use the rotary controller to set
input impedance to desired value (10Ω
-
1000Ω).
ONLY IMPORTANT FOR LOW-OUTPUT MC CARTRIDGES!
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 and input capacitance, into which the cartridge
is designed to work. If in doubt, please consult your dealer.
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