Rane AC 22B Datasheet
AC 22B
ACTIVE CROSSOVER
Data Sheet-
Features
• Stereo 2-Way or Mono 3-Way
• Linkwitz-Riley Alignment with 24 dB per Octave Slopes
• Adjustable Delays
• Mono Subwoofer Switch and Output
this magnitude guarantees drivers designed to produce a specific
range of frequencies, and no more, will not be driven past their
limits, thereby minimizing distortion and driver fatigue.
To further guarantee the transparent operation, adjustable
Delay circuits appear on the Low (& Mid when used in 3-way
mode) Outputs of each channel to compensate for any physical
misalignment of the drivers. Time correction ensures the me-
chanical phase alignment of adjacent drivers will be acoustically
correct, thus maintaining the integrity of the electrical phase
alignment of the crossover’s filters. CD horn equalization is also
possible with an internal modification.
See the RaneNote Linkwitz-RileyCrossovers: A Primer, avail-
able from our website.
General Description
The Rane AC 22B Active Crossover is a stereo 2-way with a
mono subwoofer option, or it can be used as a mono 3-way. They
employ state-variable 4th-order Linkwitz-Riley filter alignments
to minimize phase difficulties in the critical crossover region.
The AC 22B uses XLR connectors with active balanced inputs
and outputs.
Simply put, a Linkwitz-Riley alignment is two cascaded 2nd-
order Butterworth filters exhibiting identical phase characteris-
tics on their Low pass and High pass Outputs. This characteristic
guarantees in-phase outputs at all frequencies. In-phase outputs
are mandatory for proper acoustic summing of common signals
from adjacent drivers in the crossover region. An added benefit of
this topology is steep 24 dB per octave rolloff slopes. A slope of
CH 1
MASTER
POWER
DELAY
LEVEL
LEVEL
FREQUENCY
LEVEL
LOW
MUTE
LOW / HIGH
HIGH
LEVEL
LEVEL
FREQUENCY
CH 2
MASTER
STEREO
LOW
LOW / HIGH
MUTE
HIGH
LEVEL
DELAY
AC 22B
MASTER
LOW
LOW / MID
MONO
MID
MID / HIGH
HIGH
MONO SUB
INACTIVE
INACTIVE
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
10
0
2
4
8
6
MAX
MIN
2
4
8
6
MAX
MIN
2
4
8
6
ACTIVE
CROSSOVER
3.0k
70
3.6k
120
75
80
90
250
180
300
700
1.5k
2.0k
1.0k
500
400
3.0k
70
3.6k
120
75
80
90
250
180
300
700
1.5k
2.0k
1.0k
500
400
INACTIVE: MONO SUB
DATA SHEET
• Infrasonic, Ultrasonic, and RFI Filters
• Low Output Muting (2-Way)
• Input & Output Level Controls
• Fully Active Balanced XLR Inputs & Outputs
• UL/CSA/CE and 00/20/230 VAC Remote Power Supplies