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Rane AC 23B Crossover, Stereo 2 or 3 way, mono 4 or 5 way £469.99
Description
The AC 23B employs 4th-order Linkwitz-Riley filter alignments to minimize phase difficulties in the critical crossover region. Simply put, a Linkwitz-Riley alignment is two cascaded 2nd-order Butterworth filters exhibiting identical phase characteristics 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 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 time Delay circuits appear on the Low and 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. CD horn equalization is possible with an internal modification. The AC 23B uses XLR connectors with active balanced Inputs and Outputs.
R.R.P. £626.86
Our Price: £469.99 Inc VAT
Technical Specifications
- Parameter Specification 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
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
