Beyma 12WRS400 - Woofer 12" 8ohm 97dB 400W Ferrite

The Beyma 12WRS400 wide range low-mid bass speaker pushes a 400 Watt AES power output at 8 Ohms, has a 45Hz to 5000Hz frequency range and a 97 decibel sensitivity level so it can be installed to support an array of systems. To ensure consistent, high-end performance backed up by low harmonic distortion, this speaker also features a 3 inch copper voice coil and a magnetic circuit that fully complies to FEA norms; a 30mm peak-to-peak maximum excursion; and a weather-proofed cone.

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Key Features:

• High power handling: 800 W program power
• 3” copper wire voice coil 
• High sensitivity: 97 dB (1W / 1m) 
• Optimized pressed steel frame FEA optimized ceramic magnetic circuit 
• Weatherproof cone treatment for both sides of the cone 
• Low harmonic distortion and linear response 
• Wide range of applications of low and mid-low frequencies

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Technical Specifcations:

• Nominal diameter 300 mm 12 in
• Rated impedance 8 Ω
• Minimum impedance 7 Ω
• Power capacity 400 WAES
• Program power 800 W
• Sensitivity 97 dB 1W / 1m @ ZN
• Frequency range 45 - 5.000 Hz
• Recom. enclosure vol. 30 / 100 l 1,06 / 3,53 ft3
• Voice coil diameter 76,2 mm 3 in
• Bl factor 17,4 N/A
• Moving mass 0,063 kg
• Voice coil length 16 mm
• Air gap height 8 mm
• Xdamage (peak to peak) 30 mm

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Thiele-Small Parameters:

• Resonant frequency, fs 42 Hz
• D.C. Voice coil resistance, Re 5,6 Ω
• Mechanical Quality Factor, Qms 7,7
• Electrical Quality Factor, Qes 0,31
• Total Quality Factor, Qts 0,29
• Equivalent Air Volume to Cms, Vas 91 l
• Mechanical Compliance, Cms 228 μm / N
• Mechanical Resistance, Rms 2,2 kg / s
• Efficiency, η0 2,1 %
• Effective Surface Area, Sd 0,053 m2
• Maximum Displacement, Xmax 4 6,3 mm
• Displacement Volume, Vd 334 cm3
• Voice Coil Inductance, Le 1,3 mH

Mounting Information:

• Overall diameter 310 mm 12,2 in
• Bolt circle diameter 292 mm 11,5 in
• Baffle cutout diameter:
• - Front mount 280 mm 11,0 in
• Depth 131 mm 5,2 in
• Net weight 5,5 kg
• Shipping weight 6 kg