Rane AC 23 Datasheet

AC 23 & AC 23B

ACTIVE CROSSOVERS

Data Sheet-1

AC 23 Features

•   ¼" TRS Inputs & ¼" TS Outputs

•   Active Balanced/Unbalanced Inputs & Unbalanced Outputs

AC 23B Features

•   XLR Inputs & Outputs

•   Fully Active Balanced Inputs & Outputs

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

•   UL/CSA/CE and 100/120/230 VAC Remote Power Supplies

General Description

The Rane AC 23 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. The AC 23 uses

¼" TRS connectors with balanced/unbalanced Inputs and

unbalanced Outputs. The AC 23B 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

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 of the

AC 23, 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. CD horn

equalization is now possible with an internal modification.

Time Delay can also be internally transplanted to the Mid and

High Outputs if desired.

See RaneNote 107 for more information regarding

Linkwitz-Riley designs.

DATA SHEET