User's Manual

AC 23S
ACTIVE CROSSOVER
Data Sheet-1
Features
• Stereo 2- or 3-Way, Mono 4- or 5-Way
• Linkwitz-Riley Alignment with 24 dB per Octave Slopes
• Adjustable Delays
• Infrasonic, Ultrasonic and RFI Filters
General Description
e Rane AC 23S Active Crossover can be configured as a stereo
2- or 3-way, or a mono 4- or 5-way. It employs 4th-order Link-
witz-Riley filter alignments to minimize phase difficulties in the
critical crossover region. e AC 23S 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. is 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
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 of the
AC 23S, adjustable Delay circuits appear on the Low & Mid
Outputs of each Channel to compensate for any physical mis-
alignment of the drivers. Time correction ensures the mechanical
phase alignment of adjacent drivers will be acoustically correct,
thus maintaining the integrity of the electrical phase alignment
of the crossover’s filters.
In 2- or 3-way stereo mode, the low outputs may be mono'ed
by moving an internal jumper. Constant directivity (CD) horn
equalization is possible with an internal modification. See the
manual for details.
See the RaneNote Linkwitz-Riley Crossovers for more infor-
mation, available at www.rane.com.
MONO 4W OR 5W: INACTIVE 4W: INACTIVE4W: INACTIVE
100
2
4
8
6
100
2
4
8
6
100
2
4
8
6
100
2
4
8
6
100
2
4
8
6
100
2
4
8
6
100
2
4
8
6
100
2
4
8
6
MAXMIN
2
4
8
6
MAXMIN
2
4
8
6
MAXMIN
2
4
8
6
MAXMIN
2
4
8
6
10 0
80 900
850
15 0
200
240
75 0
600
400
19 0
250
7 . 0k
5. 8k
550
47 5
350
70 0
2.0k
2.8k
4. 5k
1. 0k
19 0
250
7 . 0k
5. 8k
550
47 5
350
70 0
2.0k
2.8k
4. 5k
1. 0k
1k70
4W: MID / HIGH
2W: INACTIVE 2W: INACTIVE 2W: LOW / HIGH 2W: LOW / HIGH2W: INACTIVE2W: INACTIVE 2W: LOW2W: LOW
10 0
80 900
850
15 0
200
240
75 0
600
400
1k70
MUTE
LEVEL LEVEL LEVEL LEVEL
MASTER
LEVEL
MASTER
LEVEL LEVEL LEVEL
MUTE
FREQUENCY
DELAY DELAY DELAY DELAY
FREQUENCY FREQUENCY
MUTE MUTE
AC 23S
ACTIVE
CROSSOVER
CH 2CH 1
FREQUENCY
LOW MID LOW MIDHIGH HIGH
MIDMONO MASTER SUBWOOFER SUB / LOW HIGHLOW LOW / MID
MID / HIGHLOW / MID MID / HIGHLOW / MID
5W: HIGH-MID / HIGH5W: HIGH-MID5W: MID / HIGH-MID
POWER
DATA SHEET
• Low & Mid Output Muting (3-Way)
• Input & Output Level Controls
• Fully Active Balanced XLR Inputs & Outputs
• Internal Universal Power Supply (100-240 VAC)