2 LOW CUT button
This button activates the 25Hz high-pass filter protecting the woofers against low-
frequency signals.
3 LOW/MID XOVER FREQ control
This control governs the crossover frequency between the Low and Mid bands. When
the XOVER FREQUENCY button on the rear of the unit is pressed, the frequency range
is multiplied by the factor 10.
4 MID/HIGH XOVER FREQ control
This knob governs the crossover frequency between the Mid and High bands.
5 DELAY control
This control delays the Low signal as much as 2 ms, which is useful to align the speaker
systems in phase.
6 LOW OUTPUT control
This knob ranges the output level of the Low band from -
to +6dB.
7 LOW PHASE INVERT button
Via this button, you can reverse the phase of the Low output.
8 LOW MUTE button
This button can be used to mute the Low band.
9 MID OUTPUT control
This button ranges the output level of the Mid band from -
to +6 dB.
10 MID PHASE INVERT button
Via this button, you can reverse the phase of the Mid output.
11 MID MUTE button
This button can be used to mute the Mid band.
12 HIGH OUTPUT control
This knob ranges the output level of the High band from -
to +6 dB.
13 HIGH PHASE INVERT button
Via this button, you can reverse the phase of the High output.
14 HIGH MUTE button
This button can be used to mute the High band.
15 CD HORN button
This button provides a special form of frequency correction in the High band for
constant-directivity horns.
30 THRESHOLD control
This knob determines the limiter threshold.
31 LIMITER button
This button activates all limiters. Whenever the signal surpasses the limiter threshold,
the LIM-LEDs above the Gain control light up, signaling that the TXO-234 MK II cuts
back the output level.
8 MODE button
In stereo 2-way mode, do press the first button and release the second one. Please
observe the labels on the rear panel of the unit.
Always switch off the entire system before you press this button, as it produces heavy
interference noise that could damage your speakers and/or other equipment.
9 LOW SUM button
In stereo mode, the two Low paths can be summed by the LOW SUM button and routed
To the Low output of channel 1, which is particularly useful in systems using additional
subwoofers.
14 INPUT connector
This balanced XLR Connecter is used to input the signal.
Stereo 3-way operation
Firstly, activate stereo 3-way mode by means of the two MODE buttons on the rear panel.
The STEREO-LED on the front panel, above the second LOW CUT button, lights up.
Subsequently, the LED s above the active controls on the front panel l ight up, signalling
which controls are ac tive in the operating mode you just selected. T
he functions of
these controls can be seen from the second s trip label. In stereo mode, both channel s
per form the same functions.
Fig. 4 Proper selection of the two MODE switches for stereo 3-way operation
Fig. 5 Active control elements on the front panel
1 & 16 INPUT control
These knobs adjust the input gain by a range of -
to +12dB.
4
4
5
5
16
4
9 11
1
2
3
5
6 8
12 14 15
30 31
7
13
10
OFF
ON
dB
CHANNEL 1
8
25Hz
2k
200
1k2
120
3k5
350
600
60
7k
700
440
44
9k3
930
Hz
dB
Hz
7k
600
1k2
3k5
9k3
440
2k
mSec.
0.7
1.3
2
0
1
2
2
6
0
4
4
dB
2
2
6
0
4
4
dB
2
2
6
0
4
4
dB
25Hz
2k
200
1k2
120
3k5
350
600
60
7k
700
440
44
9k3
930
Hz
dB
Hz
7k
600
1k2
3k5
9k3
440
2k
mSec.
0
0.7
1.3
2
1
2
2
6
0
4
4
dB
2
2
6
0
4
4
2
0
dB
2
6
4
4
8
4
12
0
4
8
8
4
12
0
4
dB
18
6
12
OFF
6
0
9
MONO
LIM
LIM
LIM
STEREO
LIM
LIM
LIM
MULTIBAND LIMITER
CHANNEL 2
OFF
ON
OFF
ON
OFF
ON
INV
INV
INV
INV
INV
INV
ON
OFF
R
STEREO 3-WAY
2
INPUT
INPUT
LOW CUT
LOW CUT
LOW/LOW-MID
LOW/MID
HIGH
LOW-MID/HIGH-MID
MID/HIGH
LOW DELAY
LOW DELAY
LOW OUTPUT
LOW OUTPUT
MID OUTPUT
LOW-MID OUTPUT
HIGH OUTPUT
MONO 4-WAY
INPUT
LOW/MID
HIGH
HIGH-MID/HIGH
MID/HIGH
LOW DELAY
LOW OUTPUT
MID OUTPUT
HIGH -MID OUTPUT
HIGH OUTPUT
HIGH OUTPUT
STEREO 3-WAY
2-WAY
MONO 4-WAY
INPUT
DELAY
LIMITER
XOVER FREQ.
XOVER FREQ.
GAIN
MUTE
GAIN
MUTE
GAIN
MUTE
CD HORN
LOW CUT
DELAY
XOVER FREQ.
XOVER FREQ.
GAIN
MUTE
GAIN
MUTE
GAIN
MUTE
THRESHOLD
INPUT
LOW CUT
POWER
LOW CUT
2-WAY/3-WAY STEREO
4-WAY MONO
ACTIVE CROSSOVER
TXO-234
MK
