B52 Pro Audio – ACT PRO 15
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B52 Pro Audio – ACT PRO 15




• Bi-amp design with discrete output stage for both the woofer and compression driver
• 4th order electronic X-over and multi-stage custom equalization
• Proprietary efficient Class-G amplification on LF channel
• Subsonic filter: 12dB/octave
• Built-in compressor/limiter
• Left and Right balanced XLR
• 100Hz 18dB/octave low cut switch on full range models
• Ground lift switch
• Full thermal & short circuit protection
• Large heatsink with convection cooling
• Oversized toroidal transformer
• LEDs for Power, Protect, Limit and Signal
• 115V/230V 60Hz/50Hz selector switch

Cabinet features

• Made in the U.S.A. using advanced CNC routers
• 5/8” birch plywood construction
• Reinforced internal bracings
• Environmentally friendly WarneckeTM scratch-resistant black paint finish
• 16-gauge wrap-around steel grilles
• Metal handles and rubber feet
• Metal pole mounting cup
• Front logo illuminated with blue LED

Loudspeaker components Compression Driver

• Celestion 1”-exit with PETP film diaphragm Constant Directivity Horns
• 90 x 40 constant directivity horn Low-Frequency Transducers
• Vented magnet assemblies for advanced cooling
• High-temperature copper-wound


The new ACTPRO Series is an advanced line of made in the USA powered loudspeaker systems that offer the sonic accuracy, power, and reliability demanded by today’s professional performers. Fueled by B-52’s ultra-efficient Class-G amplifiers, ACTPRO systems deliver rich, clear sound at extreme SPLs. ACTPRO amplifiers employ sophisticated circuitry including acoustically tuned 4th order crossovers, four stages of equalization, a built-in intelligent compressor/limiter, and short circuit/over-current protection. An extra high current output stage allows for uninterrupted extended play without the risk of thermal shutdown. ACTPRO full-range amplifiers are bi-amped with fully discrete output stages.

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