Wavecor SW275BD01

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.8dB
• Frequency response 30 - 400Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30.8Hz
• Mechanical quality factor QMS 12.70
• Electrical quality factor QES 0.59
• Total quality factor QTS 0.57

Large signal parameters

• Maximum linear excursion xmax 16mm
• Air volume displaced at xmax VD 502cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.7Ω
• Inductance (1kHz) LE 0.94mH
• VC Diameter 64mm
• Winding height HVC 39mm

Magnet

• Force factor Bl 12.1N/A
• Motor constant Bl/√RE 6.29N/√W
• Air gap height HAG 7mm

Diaphragm

• Effective diameter 200mm
• Effective area SD 314cm²
• Moving mass MMS 121g
• Moving mass (without air load) MMD 117g

Suspensions

• Stiffness KMS 4.55N/mm
• Compliance CMS 220µm/N
• Equivalent volume to the compliance VAS 31L
• Mechanical resistance RMS 1.85N·s/m

Dimensions

• Nominal diameter 10.75″
• 273mm
• Volume occupied by the driver (estimated) 3.6L
• Net weight 8.0kg