SEAS H1217-08 CA18RLY

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.5dB
• Frequency response 35 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42Hz
• Mechanical quality factor QMS 2.92
• Electrical quality factor QES 0.56
• Total quality factor QTS 0.47

Large signal parameters

• Maximum linear excursion xmax 5mm
• Maximum excursion before damage xlim 10mm
• Air volume displaced at xmax VD 68cm³
• Power handling P 80W
• Program power Pmax 250W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.8Ω
• Inductance (1kHz) LE 1.05mH
• VC Diameter 26mm
• Winding height HVC 16mm

Magnet

• Flux density B 1.1T
• Force factor Bl 5.6N/A
• Motor constant Bl/√RE 2.33N/√W
• Air gap height HAG 6mm
• Weight 0.42kg

Diaphragm

• Effective diameter 132mm
• Effective area SD 136cm²
• Moving mass MMS 10.6g
• Moving mass (without air load) MMD 9.4g

Suspensions

• Stiffness KMS 0.714N/mm
• Compliance CMS 1400µm/N
• Equivalent volume to the compliance VAS 32L
• Mechanical resistance RMS 1.04N·s/m

Dimensions

• Nominal diameter 8″
• 180mm
• Volume occupied by the driver (estimated) 0.57L
• Net weight 1.41kg