2-Way, 3-Way
4-Way Crossovers
223/223XL - 234/234XL
5
40 Hz
INPUT
INPUT
LOW CUT
LOW CUT
x10
XOVER FREQ
LOW/MID
LOW/HIGH
LOW OUTPUT
LOW OUTPUT
HIGH OUTPUT
GAIN
dB
-12
-6
+6
0
+12
INPUT
LOW CUT
MID/HIGH
LOW/HIGH
MID OUTPUT
LOW OUTPUT
HIGH OUTPUT
HIGH OUTPUT
40 Hz
x10
XOVER FREQ
GAIN
dB
-12
-6
+6
0
+12
-
GAIN
dB
-30
-10
0
+6
-
GAIN
dB
-30
-10
0
+6
Hz
45
70
350
240
140
960
680
-
GAIN
dB
-10
0
+6
-30
Hz
45
70
350
240
140
960
680
-
GAIN
dB
-10
0
+6
-30
INV
INV
INV
INV
MONO
STEREO
CHANNEL TWO
CHANNEL ONE
1 2 3 4 5 6
7
8
9 10 11 12 13 14 15 16 17
18
®
S
TEREO
2-W
AY
M
ODE
In 2-way stereo mode the controls are marked BELOW the horizontal blue line.
Channel One and Channel Two functions are identical in the stereo mode. LEDs are disabled for controls
which are non-functional in this mode.
[1] & [5]
I
NPUT
G
AIN
Controls the INPUT level with +/- 12 dB of gain.
[9] & [15]
L
OW
C
UT
Switch for selecting the 40 Hz high pass filter. An LED indicates
the selection.
[2] & [6]
L
OW
/H
IGH
Selects crossover point between the LOW and HIGH outputs.
[10] & [16]
X
10 LED
Indicates that the LOW/HIGH crossover frequency range is 450
Hz to 9.6 kHz.
[3] & [7]
L
OW
O
UTPUT
Controls the Low Frequency output level with a range of -
∞
to +6
dB.
[11] & [17]
P
HASE
I
NVERT
Switch for reversing the polarity on the Low Output. An LED indi-
cates the selection.
[4] & [8]
H
IGH
O
UTPUT
Controls the High Frequency output with a range of -
∞
to +6 dB.
[12] & [18]
P
HASE
I
NVERT
Switch for reversing the polarity on the High Output. An LED indi-
cates the selection.
[14]
S
TEREO
LED indicating stereo mode operation.
M
ONO
3 -W
AY
M
ODE
In 3-way mono operation the controls are marked ABOVE the horizontal blue line. Front panel controls not
described in this section are not active in mono 3-way mode. LEDs are disabled for controls which are non-
functional in this mode.
[
1]
I
NPUT
G
AIN
Controls the input level with +/- 12 dB of gain.
[9]
L
OW
C
UT
Switch for selecting the 40 Hz high pass filter. An LED indicates
the selection.
[2]
L
OW
/M
ID
Selects crossover point between LOW and MID frequencies.
[10]
X
10 LED
Indicates that the LOW/MID crossover range is 450 Hz to 9.6 kHz.
[6]
M
ID
/H
IGH
Selects the crossover point between MID and HIGH frequencies.
[16]
X
10 LED
Indicates that the MID/HIGH crossover frequency range is 450 Hz
to 9.6 kHz
[3]
L
OW
O
UTPUT
Controls the LOW frequency output level with a range of -
∞
to +6
dB.
[11]
P
HASE
I
NVERT
Switch for reversing the polarity on the Low Output. An LED indi-
cates that the phase is reversed.
[7]
M
ID
O
UTPUT
Controls the MID frequency output level with a range of -
∞
to +6
dB.
[17]
P
HASE
I
NVERT
Switch for reversing the polarity on the Mid Output. An LED indi-
cates that the phase is reversed.
[8]
H
IGH
O
UTPUT
Controls the HIGH frequency output level with a range of -
∞
to +6
dB.
[18]
P
HASE
I
NVERT
Switch for reversing the polarity on the High Output. An LED indi-
cates that the phase is reversed.
[13]
M
ONO
LED indicating mono mode operation.
Note: There are no front panel differences between the 223 and the 223XL. Therefore the
223XL is shown below, representing both the 223 and the 223XL.
dbx 223/223XL Front Panel
