Basic Settings for the X1 Active Crossover
The following diagrams will provide starting points for each control feature on the X1. Begin with these basic settings and
then move onto the next section which describes each X1 control function in detail and provides advice for fine tuning the
X1 to your listening room.
X1 Active Crossover
The subwoofer enclosure must be correctly connected to the A1 amplifier and X1 crossover in order to function properly.
X1 Design
The NHT X1 active crossover is designed to allow convenient front panel adjustment necessary to integrate the iWS sub-
woofer with most popular satellites. It also provides unbalanced RCA and balanced XLR inputs and outputs for connec-
tion with all types of receivers or separate audio components.
NOTE: The X1 contains special equalization circuitry specifically designed for the iWS and Evolution subwoofers. It is not
recommended for use with other subwoofers.
The X1 Active Crossover can operate as either a mono (single channel) or stereo unit (dual channel). See the
Configurations section on page 5. In the stereo mode, you may add an additional subwoofer without purchasing an addi-
Boundary EQ
LFE Gain
Master Gain
Min
Min
-6
-3
+3
Max
Max
+6
0
0
90
180
0
Phase
75
55
30
Low Pass
140
80
110
HZ
50
65
Degrees
dB
LFE
LFE In
High Pass
Out L
High Pass
Out R
Hi Pass
Out
Sub
Out
Gain
High Pass Filter
Out
In
R
L
110Hz
Stereo
10 dB
80Hz
50Hz
Mono
0 dB
Not used in Method #1
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