Alpha Source 412 WR
12" High Performance Passive Speaker
Product at a Glance
The British Acoustics Alpha Source 412 WR is a 12" installation speaker built for high-performance sound in demanding environments. Featuring a 2.5" copper voice coil and 1.4" HF compression driver, it delivers precise, dynamic audio for professional applications. Its IP54-rated design ensures dust and water resistance for indoor and outdoor use. The enclosure is crafted from marine-grade birch plywood and finished with perforated black steel grills for durability and aesthetics. With rotatable horns and multiple mounting options, the Alpha Source 412 WR adapts easily to monitors, flown arrays, or pole setups, delivering reliable, high-quality sound every time.
CRAFTSMANSHIP
Painstakingly Perfect Production
Over the years, craftsmanship has been closely linked with small scale individualistic production. Back in 1972, we started the same way. As we grew in scale & size, it was difficult to build each speaker individually, but quality control was of utmost importance as so switching to a general assembly line was simply not an option. So we wrote up a code, one quite like enigma, to ensure quality control. We selected the right partners, got the right tools, and in cases where those weren't available, we invented them. We grew slower than most as our aim was to last longer than most.
TECHNICAL SPECIFICATIONS
ACOUSTICAL SPECIFICATIONS
• Freq. Response (-3 dB) : 59 Hz - 20 kHz
• Freq. Range (-10 dB) : 50 Hz - 20 kHz
• Rated Power : 500W AES, 2000W Peak
• H Dispersion : 90° (- 6 dB)
• V Dispersion : 50° (- 6 dB)
• User Rotatable Horns
• Crossover : 2.1 kHz or Bi-amplified
• Nominal Impedance : 8 Ω
• Max Output : Cont 127 dB, Peak 133 dB
• 2 x Speak-On Sockets, Input & Thru
SYSTEM SPECIFICATIONS
• Recommended Subwoofers : See Systems
Chart for compatible subwoofers
• Recommended System Control : Delta Drive
DSP Control Systems
• Recommended Amplifiers : See Amplifier
load calculation chart
LF TRANSDUCER
• 12" Low Frequency Driver
• 450W AES, 1800W Peak
• 2.5" Copper Voice Coil - Ferrite Magnet
• Enhanced Airflow Path for minimal power
• Aluminum Demodulation Ring for reduced
distortion
HF TRANSDUCER
• 1.4" Exit HF Compression Driver
• 50W AES, 200W Peak
• 2.5" Voice Coil - Ferrite Magnet
• Alpha Contour Waveguide ensuring
consistent coverage
HOUSING
• Marine Birchply Enclosure
• Granular Scratch Free Polyurea Paint
• Perforated Black, Pressed Steel Grills
• Integrated Handles on Either Side
• Includes a set of round bottom feet for
secure and stable stacking
• Sloped Input Plates
• M10 Flying inserts
• Installation brackets : Alpha Throne (H),
Alpha Throne (V), Alpha Yoke B410
AESTHETIC SPECIFICATIONS
• British Acoustics Signature Umber Brown
Tone
• Blue Decals on Grills for better Aesthetics
• Available in a RAL code of your choice (24
nos, minimum)
OPERATING PARAMETERS
• Operating positions: Can be deployed
horizontally or vertically with the correct
installation brackets or can be used as a
monitor
• Maximum permitted ambient temperature
(Ta max) 55° C (124° F)
• Minimum permitted ambient temperature
(Ta min): -20° C (-4° F)
IP SPECIFICATIONS
• WR Version : IP 54 - Offers greater
resistance against dust & water
OPTIONAL ACCESSORIES
• See system chart for the System Accessories
SIZE
• Product: 622 x 355 x 457 mm (H x W x D)
• Product: 24 x 16 x 13 inch (H x W x D)
• Packed individually
WEIGHT
• Net : 21.7 Kgs
• Net : 47.8 Lbs
SHIPPING INFORMATION
• Carton Size
697 x 430 x 532 mm (H x W x D)
27.4 x 16.9 x 20.9 inch (H x W x D)
• Gross Weight : 22.7 Kgs / 50Lbs
• Packed : Individually
DOWNLOADS CENTRE
Datasheet Alpha Source 412 WR
DWG Drawing Alpha Source 412 WR
PDF Drawing Alpha Source 412 WR
