SEAS SW 300/1 L0020-04S

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.9dB
• Frequency response 30 - 500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 23Hz
• Mechanical quality factor QMS 5.92
• Electrical quality factor QES 0.56
• Total quality factor QTS 0.51

Large signal parameters

• Maximum linear excursion xmax 13.5mm
• Maximum excursion before damage xlim 22mm
• Air volume displaced at xmax VD 648cm³
• Power handling P 180W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 5.82mH
• VC Diameter 52mm
• Winding height HVC 37mm

Magnet

• Flux density B 0.66T
• Force factor Bl 12.1N/A
• Motor constant Bl/√RE 6.56N/√W
• Air gap height HAG 10mm
• Weight 5.8kg

Diaphragm

• Effective diameter 247mm
• Effective area SD 480cm²
• Moving mass MMS 158g
• Moving mass (without air load) MMD 151g

Suspensions

• Stiffness KMS 3.33N/mm
• Compliance CMS 300µm/N
• Equivalent volume to the compliance VAS 94L
• Mechanical resistance RMS 4N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Volume occupied by the driver (estimated) 3.1L
• Net weight 7.1kg