SEAS E0018-08S W18E001

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.9dB
• Frequency response 40 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34Hz
• Mechanical quality factor QMS 2.91
• Electrical quality factor QES 0.49
• Total quality factor QTS 0.42

Large signal parameters

• Maximum linear excursion xmax 5mm
• Maximum excursion before damage xlim 9.5mm
• Air volume displaced at xmax VD 63cm³
• Power handling P 100W
• Program power Pmax 250W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.1Ω
• Inductance (1kHz) LE 0.65mH
• VC Diameter 39mm
• Winding height HVC 16mm

Magnet

• Flux density B 0.88T
• Force factor Bl 6.6N/A
• Motor constant Bl/√RE 2.67N/√W
• Air gap height HAG 6mm
• Weight 0.42kg

Diaphragm

• Effective diameter 127mm
• Effective area SD 126cm²
• Moving mass MMS 15.5g
• Moving mass (without air load) MMD 14.4g

Suspensions

• Stiffness KMS 0.714N/mm
• Compliance CMS 1400µm/N
• Equivalent volume to the compliance VAS 30L
• Mechanical resistance RMS 1.2N·s/m

Dimensions

• Nominal diameter 8″
• 180mm
• Volume occupied by the driver (estimated) 0.71L
• Net weight 1.75kg