20 50 100 200 500 1k 2k 5k 10k 20 k
Frequency (Hz)
-10
-20
-30
-40
-50
-60
Volume controller setting [dB]
Construction and technology
Tilt Control
The midrange/treble adjustment of the nuPro loudspeakers has the
characteristics of a so-called “Tilt control”. While standard treble con-
trols “bend” the frequency response and thus produce colourations,
this control continuously affects the frequency response in a linear
fashion. This perfectly preserves the basic tonal character of the
loudspeaker and the harmony of the sound image. The Mid/Hi tone
control allows an increase or decrease of the frequency response
with a maximum of 10 dB at 20 kHz.
Analog gain
The input sensitivity for the analog inputs XLR and AUX can be
adjusted in 2 steps (0 dB / +6 dB).
Digital Signal Processing
For maximum fidelity, the signal path of a nuPro X loudspeaker
is kept virtually entirely digital: Digital input signals go straight to
the digital signal processor (DSP), which then handles frequency
distribution and optimization of the frequency response. Analogue
sources are first converted to a digital signal by high-quality A/D
converters. The signal remains digital all the way into the power
amplifiers in order to achieve the best possible precision and signal
to noise ratio.
Time correction
Due to the digital signal processing, every nuPro X loudspeaker has
a small delay of the sound signal. If the nuPro speakers are operat-
ed as a stereo pair in the PAIR configuration, any time differences
between the speakers are automatically compensated so that the
left and right signals are reproduced at exactly the same time. The
result is the best possible spatial reproduction with precise voice
positioning.
Sound format
The nuPro X loudspeakers process signals at the digital inputs in
“PCM” format. It may therefore be necessary to adjust the settings of
players such as TV sets or game consoles accordingly. To do this,
select “PCM” as the output format in the playback menu. Please also
refer to the manual of your source device.
Switching off a nuPro X pair
If the master box is set to standby mode by either with the remote
control or by the auto-off function, the other loudspeakers operate
in PAIR mode follow automatically.
Auto-off function
The auto on/off function reacts differently, depending on the selected
input: If no signal is present at the analog input, the loudspeaker is
set to stand by after 20 minutes. As soon as an analog input signal is
detected, the speaker switches back on. At the other inputs, the ac-
tivity of the connected source is monitored, allowing the loudspeaker
to switch off or on instantly. At the SPDIF, Optical, Port and AES/
EBU inputs, the presence of the digital data stream is monitored,
while at at the USB input the presence of USB supply voltage is de-
tected. The standby power consumption depends on the operating
mode. See page 11, section
setup
.
Note:
Modern computers often have USB sockets that deliver con-
stant voltage (e.g. for charging a mobile phone) even when the com-
puter is switched off. If you want to use the auto-on function of your
nuPro active loudspeakers in conjunction with the USB input, you
must use a USB connector that powers off with the computer.
Auto-on function
The nuPro speakers have an auto-on function that automatically
wakes up the loudspeaker from standby mode. This function is only
active if the loudspeaker was set to standby by the auto-off func-
tion. To wake up the loudspeaker, a signal must be present at the
input that was selected when the loudspeaker went into standby
(this function is not available at the Bluetooth and HDMI-ARC don-
gle inputs. If the speaker was set to standby using the remote con-
trol or the app, the auto-on function is disabled.
Loudness
This function can be used to make a volume-dependent frequency
response correction that compensates for limitations in the human
hearing. At low levels, human hearing is less sensitive in the bass-
range. In order to compensate for this, the loudness function in-
creases the bass-level with up to 10 dB when activated.
Frequency response correction relative to volume settings
13
EN 12/2019 · E1
2
·
nuPro X-3000
