Rane AC 23B User Manual
MONO 4W OR 5W: INACTIVE
4W: MID / HIGH 4W: INACTIVE4W: INACTIVE
100
248
6
100
248
6
100
248
6
100
248
6
100
248
6
100
248
6
100
248
6
100
248
6
MAXMIN
248
6
MAXMIN
248
6
MAXMIN
248
6
MAXMIN
248
6
100
801k900
850
150
200
240
750
600
400
190
250
7.0k
5.8k
550
475
350
700
2.0k
2.8k
4.5k
1.0k
190
250
7k
5.8k
550
475
350
700
2.0k
2.8k
4.5k
1.0k
100
801k900
850
150
200
240
750
600
400
2W: INACTIVE
ACTIVE
CROSSOVER
70 70
2W: INACTIVE 2W: LOW / HIGH 2W: LOW / HIGH2W: INACTIVE2W: INACTIVE 2W: LOW2W: LOW
LEVEL LEVEL
MUTE
LEVEL LEVEL
MUTE
FREQUENCY DELAY DELAY LEVEL FREQUENCY FREQUENCY LEVEL DELAY
MUTE
FREQUENCY LEVEL DELAY
MUTE
LEVEL
AC 23B
CH 2
MASTER
CH 1
MASTER
POWER FREQUENCY
LOW MID LOW MID HIGH HIGH
MID MONO MASTER SUBWOOFER SUB / LOW HIGH LOW LOW / MID
3W: MID / HIGH 3W: LOW / MID 3W: MID / HIGH 3W: LOW / MID
5W: HIGH-MID / HIGH 5W: HIGH-MID 5W: MID / HIGH-MID
DATA SHEET
General Description
e Rane AC 23B Active Crossover can be configured as a
stereo 2- or 3-way, or a mono 4- or 5-way. It employs 4th-order
Linkwitz-Riley filter alignments to minimize phase difficulties in
the critical crossover region. e AC 23B uses XLR connectors
with active balanced Inputs and Outputs.
Simply put, a Linkwitz-Riley alignment is two cascaded 2ndorder Butterworth filters exhibiting identical phase characteristics 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
AC 23B
ACTIVE CROSSOVER
limits, thereby minimizing distortion and driver fatigue.
To further guarantee the transparent operation of the
AC 23B, adjustable Delay circuits appear on the Low & Mid
Outputs of each Channel to compensate for any physical misalignment 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 information, available at www.rane.com.
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
• Low & Mid Output Muting (3-Way)
• Input & Output Level Controls
• Fully Active Balanced XLR Inputs & Outputs
• UL/CSA/CE and 100/120/230 VAC Remote Power Supplies
Data Sheet-1
AC 23B
ACTIVE CROSSOVER
Features and Specifications
Parameter Specication Limit Units Conditions/Comments
Crossover: Alignment Linkwitz-Riley Proprietary 4th-order state-variable
..........Slopes 24 dB per Octave
..........Range (3-way) 70-1 kHz Low to Mid 41-detent continuously variable pot
..........Range (3-way) 190-7 kHz Mid to High as above
..........Range (2-way) 190-7 kHz Low to High as above
Time Delay Adjust Range Off to +2 5% ms Low & Mid Outputs only
Inputs: Impedance 20k 1 Ω
..........Maximum Level +21 1 dBu
..........Gain Range Off to +6 -0/+4 dB
Inputs: Type Active Balanced XLR Pin 2 hot per AES standards
Outputs: Type Active Balanced XLR Pin 2 hot per AES standards
..........Impedance 200 1% Ω
..........Maximum Level +20 1 dBu 600 Ω or greater
..........Gain Range Off to +12 -0/+4 dB
Band Muting Switches Yes Low & Mid Outputs only
RFI Filters Yes
Infrasonic Filter 20 Hz, 18 dB/Oct, Butterworth 3% Hz
Ultrasonic Filter 40 kHz, 18 dB/Oct, Bessel 3% Hz Linear phase
Frequency Response 20-40 kHz +0/-3 dB
THD+Noise 0.02 .01 % +4 dBu, 20-20 kHz
IM Distortion (SMPTE) 0.02 .01 % 60 Hz / 7 kHz, 4:1, +4 dBu
Signal-to-Noise Ratio 92 2 dB re +4 dBu, 20 kHz noise bandwidth
Unit: Agency Listing
..........120 VAC model Class 2 Equipment National Electrical Code
UL & CSA Class 2
..........230 VAC model VDE, SELV Safety Extra Low Voltage
CE-EMC EMC directive 89/336/EEC
CE-Safety Exempt per Art. 1, LVD 73/23/EEC
Power Supply: Agency Listing
..........120 VAC model UL File no. E88261
CSA File no. LR58948
..........230 VAC model CE-EMC EMC directive 89/336/EEC
CE-Safety LV directive 73/23/EEC
..........100 VAC model Built to JIS Japan only
Power Supply Requirement 18 VAC w/center tap 0.1 Vrms Model RS 1
Maximum Current 750 mA RMS Current from Remote Supply
Unit: Construction All Steel
..........Size 1.75" H x 19" W x 5.3" D (1U) (4.4 cm x 48.3 cm x 13.3 cm)
..........Weight 5 lb (2.3 kg)
Shipping: Size 4.25" x 20.3" x 13.75" (11.5 cm x 52 cm x 35 cm)
..........Weight 9 lb (4.1 kg)
Note: 0 dBu=0.775 Vrms
Data Sheet-2
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