User manual RANE AC 22B DATASHEET

[. . . ] DATA SHEET AC 22 & AC 22B ACTIVE CROSSOVERS 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. [. . . ] LR58948 EMC directive 89/336/EEC LV directive 73/23/EEC Japan only RS 1 (see data sheet) RMS Current from Remote Supply (4. 4 cm x 48. 3 cm x 13. 3 cm) (3 kg) (11 cm x 52 cm x 35 cm) (5 kg) 0. 1 Vrms mA Data Sheet-2 AC 22 & AC 22B ACTIVE CROSSOVERS AC 22 Block Diagram AC 22B Block Diagram Data Sheet-3 AC 22 & AC 22B ACTIVE CROSSOVERS Rear Panels Choosing the Right Configuration: Mono, TwoChannel Mono or Stereo? Very few systems indeed will utilize a two channel crossover for the purpose of true stereo imaging. Discrete stereo channels which are run from the mixing board are usually used for panning effects and/or for separate equalization of left and right speaker stacks. Different sides of the room often require significantly different equalization due to varying room acoustics, dimensions, positioning of speaker stacks near walls, curtains and the like. Even though you may not plan to use stereo equalization or panning effects, it is recommended that your system utilize discrete crossover channels for each stack of speakers to ensure flexibility and control for consistent, optimum sound quality. For example, if you plan to run a multi-stack system mono three-way, use the AC 23 rather than the AC 22 for separate control over each set of speakers--especially since phase alignment may differ with each stack requiring separate time delay adjustments. Even with only a single system equalizer, the AC 23 can deliver the extra independent control which can make a difference in sound throughout the listening area. If all drivers are built into a single cabinet, or you are running bi-amped monitors, then the AC 22 is the one for you. Architectural Specifications The active crossover shall contain 4th-order LinkwitzRiley filters. Provisions shall exist to correct for driver misalignment by means of adding time delay to the low frequency outputs. The crossover frequency shall be controlled by a continuously variable control with 41 detents to allow mechanical reference of crossover setting. Signal inputs shall be active balanced/unbalanced designs terminated with ¼" TRS (tip-ring-sleeve) connectors for the AC 22, and active balanced terminated with XLR connectors for the AC 22B. [. . . ] Bohn, "Linkwitz-Riley Active Crossovers Up To 8th-Order: An Overview, " Rane Note 119, (1989). ©Rane Corporation 10802 47th Ave. W. , Mukilteo WA 98275-5098 TEL (425)355-6000 FAX (425)347-7757 WEB http://www. rane. com Data Sheet-4 All features & specifications subject to change without notice. [. . . ]