Beyma 15WR400

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.6dB
• Frequency response 40 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 36Hz
• Mechanical quality factor QMS 8.20
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 6.3mm
• Maximum excursion before damage xlim 30mm
• Air volume displaced at xmax VD 554cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 1mH
• VC Diameter 76.2mm
• Winding height HVC 16mm

Magnet

• Force factor Bl 19.2N/A
• Motor constant Bl/√RE 8.11N/√W
• Air gap height HAG 8mm

Diaphragm

• Effective diameter 335mm
• Effective area SD 880cm²
• Moving mass MMS 91g
• Moving mass (without air load) MMD 73g

Suspensions

• Stiffness KMS 4.65N/mm
• Compliance CMS 215µm/N
• Equivalent volume to the compliance VAS 236L
• Mechanical resistance RMS 2.5N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 388mm
• Baffle cutout diameter 350mm
• Overall depth 163mm
• Volume occupied by the driver (estimated) 3.4L
• Net weight 6.1kg