AC 22 & AC 22B
ACTIVE CROSSOVERS
Data Sheet-1
Features
• Stereo 2-Way or Mono 3-Way
• Linkwitz-Riley Alignment with 24 dB per Octave Slopes
• Adjustable Delays
• Mono Subwoofer Switch and Output
• Infrasonic, Ultrasonic, and RFI Filters
• Low Output Muting (2-Way)
• Input & Output Level Controls
• UL/CSA/CE and 100/120/230 VAC Remote Power Supplies
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 22 and AC 22B, 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 mechanical phase
alignment of adjacent drivers will be acoustically correct, thus
maintaining the integrity of the electrical phase alignment of
the crossover’s filters. The Low Delay circuit may be inter-
nally transplanted to the High Output when neccessary. CD
horn equalization is also possible with an internal modifica-
tion.
See RaneNote 107 for more information regarding
Linkwitz-Riley designs.
General Description
The Rane AC 22 and AC 22B Active Crossovers are
Stereo 2-Way with mono subwoofer option, or 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 model AC 22
utilizes ¼" TRS connectors with balanced/unbalanced inputs
and unbalanced outputs. The new 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
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
AC 22 Features
• ¼" TRS Inputs & ¼" TS Outputs
• Active Balanced/Unbalanced Inputs & Unbalanced Outputs
AC 22B Features
• XLR Inputs & Outputs
• Fully Active Balanced Inputs & Outputs
DATA SHEET
