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© Pro-Ject Audio Systems · Pro-Ject Tube Box DS2 · Revision 2017.2.9
4
Gain dB
Gain for the outputs can be set between
40dB
,
45dB
,
50dB
,
60dB
and
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.
Input impedance, variable – low-output MC cartridges
The button
Loading Ω
must be set to
Variable.
Use the rotary controller to set input impedance to desired
value (10Ω-1000Ω)
* Input capacitance is irrelevant for low-output MC cartridges
Input impedance, 47k - high-output MC and MM cartridges
The button
Loading Ω
must be set to 47k.
Input capacitance, variable – high-output MC and MM cartridges
The rotary control must be set to 10 Ω. Press Loading Ω until the LED marked by 47k lights up. The device
has a basic capacity of 47pF, and the Load pF button can be used to increase the terminating capacity by
100pF, 220pF or 320pF depending on the LED display, making the values 47pF, 147pF, 267pF or 367pF
available
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 (low-
output MC
cartridges) and the correct input capacitance (high-output MC and MM cartridges),
into which the
cartridge is designed to work. If in doubt please consult your dealer.
Examples of typical settings
Ortofon 2M Red
(MM)
Rotary control
10
Ω
Loading Ω
47kOhm
Gain
40dB
Loading pF
100pF
: (plus basic capacitance 47pF adds up to total of 147pF)
Ortofon MC3 Turbo
(High-Output MC)
Rotary control
10
Ω
Loading Ω
47kOhm
Gain
45dB
Loading pF
320pF
: (plus basic capacitance 47pF adds up to total of 367pF)
Ortofon MC
Cadenza Black
(Low-Output MC)
Rotary control
20
Ω
Loading Ω
variable
Gain
60dB
Loading pF capacitance for Low-Output MCs is not relevant
The values given by the manufacturer for capacitance settings for MM, MI and high-output MC-
pickups are guideline values. Since the right setting is also dependent on the capacitance
of the
tonearm cable used and the inner wiring of the tonearm, experimentation with settings can
be
carried out. The recommended terminating resistance for Low-
Output MC cartridges is also a
guideline. The gain should be set to the highest value, which makes distortion-
free playback still
possible. You cannot destroy anything when experimenting with the different settings.
What you like
best is right!
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