Wavecor SW312WA03/05

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.1dB
• Frequency response 28 - 300Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 28Hz
• Mechanical quality factor QMS 11.50
• Electrical quality factor QES 0.50
• Total quality factor QTS 0.48

Large signal parameters

• Maximum linear excursion xmax 11.5mm
• Air volume displaced at xmax VD 561cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 1.55mH
• VC Diameter 51mm
• Winding height HVC 31mm

Magnet

• Force factor Bl 14.5N/A
• Motor constant Bl/√RE 8.11N/√W
• Air gap height HAG 8mm
• Weight 0.003kg

Diaphragm

• Effective diameter 249mm
• Effective area SD 488cm²
• Moving mass MMS 185g
• Moving mass (without air load) MMD 177g

Suspensions

• Stiffness KMS 5.56N/mm
• Compliance CMS 180µm/N
• Equivalent volume to the compliance VAS 61L
• Mechanical resistance RMS 2.8N·s/m

Dimensions

• Nominal diameter 12.25″
• 311mm
• Volume occupied by the driver (estimated) 2.9L
• Net weight 6.5kg