MD Lab SW-A15

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.5dB

Thiele & Small parameters

• Resonance frequency (free air) fS 29.3Hz
• Mechanical quality factor QMS 3.17
• Electrical quality factor QES 0.74
• Total quality factor QTS 0.60

Large signal parameters

• Power handling P 450W
• Program power Pmax 900W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.8Ω
• Inductance (1kHz, estimated) LE 3.49mH

Magnet

• Force factor Bl 11N/A
• Motor constant Bl/√RE 5.64N/√W

Diaphragm

• Effective diameter 320mm
• Effective area SD 805cm²
• Moving mass MMS 268g
• Moving mass (without air load) MMD 252g

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 101L
• Mechanical resistance RMS 15.6N·s/m

Dimensions

• Nominal diameter 15″
• 400mm
• Overall diameter 400mm
• Baffle cutout diameter 362mm
• Overall depth 270mm
• Flange thickness 35mm
• Mounting depth 235mm
• Volume occupied by the driver (estimated) 7.9L