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Product Description

B-52 ACT Pro 15 (B52 ACTPRO 15)


B-52 ACT-PRO 15

15" 2 Way Powered Speaker
500 Watt RMS Bi-Amped
(1000 Watt Program Power / 2000 Watt IP Power)

Contains: B-52 SP-1500 and COMP-4CLB

Configuration 15" 2-Way full-range powered loudspeaker - 500W RMS
Low Frequency SP-1500 - 15" speaker with 2.5" voice coil
High Frequency COMP-4-CLB - PETP film compression driver with 1.75" voice coil
LF Magnet Weight 42 oz
LF Magnet Structure Weight 7 lbs.
Frequency Range 47 Hz -20 kHz
Frequency Response 56 Hz -18 kHz
High Frequency Dispersion 90º x 40º
Maximum peak SPL 131 dB
Output Power LF: 400W Class G
HF: 100W Class AB+B
Input Impedance 20 kOhm Balanced
10 kOhm Unbalanced
Elctronic Crossover 4th order
Low Cut Filer (switchable) 3rd order Butterworth @ 100 Hz
Controls Level knob
Low-cut filter switch
Ground lift switch
Power switch
AC fuse
115/230V switch
Indicators Power
Cooling Convection
Amplifier Protection Short circuit
Overheat mute
SOA output stage
Driver DC protection
Subsonic filter
Turn-on mute and soft ramp
Turn-on inrush current limiting
Power Consumption @ 115V Vac
(1/8 power pink noise) 150VA
Connectors Balanced female XLR input
Balanced male XLR link output

Input Sensitivity ** 775mV (0dBu)
Enclosure Black Warnex® painted birch plywood
Hardware Metal handles
Rubber feet
Pole mounting cup

Grille Powder coated 16 gauge steel
Dimensions 27" H x 17.5" W x 19" D
(686mm x 445mm x 483mm)
Weight 62 lbs. / 28.2 kg

• 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
• Balanced XLR input (Left and Right on ACTPRO118S Sub)
• Balanced XLR full-range output (Left and Right on ACTPRO18S Sub)
• Left and Right balanced XLR high-pass outputs on ACTPRO18S Sub
• 0-1800 Phase switch on ACTPRO18S Sub
• 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

• Sophisticated computer modeling was used to optimize the magnetic and acoustic design of these ferrite magnet compression drivers to achieve outstanding performance and reliability.
• A matched wave front phase corrector produces a perfectly coherent sound wave at the horn throat, for a detailed and dynamic mid and high frequency performance.
• The polyimide-insulated, copper-clad aluminum voice coil is edge-wound on a glass fiber former resulting in a lower distortion and superior power to weight ratio.
• A one-piece, PETP film diaphragm and surround optimizes energy transfer for greater efficiency
• The unique patented clamping system contributes directly to a low distortion performance while improving the lower mid-band response.

• Compression Driver:
o Celestion 1”-exit with PETP film diaphragm
• Horns:
o 900 x 400 constant directivity horn (ACTPRO15 & ACTPRO1515)
o Conical wave guide (ACTPRO12M)
• LF Transducers :
o Vented magnet assemblies for advanced cooling
o High temperature copper voice coil wound on polyamide former for increased reliability
o Celestion SP-1200 (ACTPRO12M)
o Celestion SP-1500 (ACTPRO15 & ACTPRO1515)
o Proprietary SP-1804 cast frame subwoofer (ACTPRO18S)

• Made in U.S.A. using advanced CNC routers
• 5/8” birch plywood construction (ACTPRO12M, ACTPRO15, ACTPRO1515)
• 3/4” birch plywood construction (ACTPRO18S)
• Main & monitor sitting positions (ACTPRO12M)
• Reinforced internal bracings
• Environmentally friendly Warnecketm scratch resistant black paint finish
• 16 gauge wrap around steel grilles
• Metal handles and rubber feet
• Rubber strips (ACTPRO12M)
• Metal pole mounting cup (ACTPRO1515 excluded)
• Front logo illuminated with blue LED

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