SEAS E0074-08 W18EX003

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.5dB
• Frequency response 40 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 32Hz
• Mechanical quality factor QMS 4.85
• Electrical quality factor QES 0.32
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 5mm
• Maximum excursion before damage xlim 10mm
• Air volume displaced at xmax VD 63cm³
• Power handling P 160W
• Program power Pmax 280W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.1Ω
• Inductance (1kHz) LE 0.2mH
• VC Diameter 39mm
• Winding height HVC 16mm

Magnet

• Flux density B 1.3T
• Force factor Bl 8.5N/A
• Motor constant Bl/√RE 3.44N/√W
• Air gap height HAG 6mm
• Weight 0.9kg

Diaphragm

• Effective diameter 127mm
• Effective area SD 126cm²
• Moving mass MMS 19g
• Moving mass (without air load) MMD 17.9g

Suspensions

• Stiffness KMS 0.769N/mm
• Compliance CMS 1300µm/N
• Equivalent volume to the compliance VAS 29L
• Mechanical resistance RMS 0.79N·s/m

Dimensions

• Nominal diameter 8″
• 180mm
• Volume occupied by the driver (estimated) 1L
• Net weight 2.45kg