Beyma 15XA38Nd

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.8dB
• Frequency response 40 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 38Hz
• Mechanical quality factor QMS 6.40
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 6mm
• Maximum excursion before damage xlim 28mm
• Air volume displaced at xmax VD 528cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.7Ω
• Inductance (1kHz) LE 1mH
• VC Diameter 101.6mm
• Winding height HVC 16mm

Magnet

• Force factor Bl 20.4N/A
• Motor constant Bl/√RE 7.88N/√W
• Air gap height HAG 9mm

Diaphragm

• Effective diameter 335mm
• Effective area SD 880cm²
• Moving mass MMS 82g
• Moving mass (without air load) MMD 64g

Suspensions

• Stiffness KMS 4.61N/mm
• Compliance CMS 217µm/N
• Equivalent volume to the compliance VAS 238L
• Mechanical resistance RMS 3N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 388mm
• Baffle cutout diameter 352mm
• Overall depth 182mm
• Volume occupied by the driver (estimated) 3.9L
• Net weight 6.8kg