SEAS H1699-08/06 MR18REX/XF

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.4dB
• Frequency response 200 - 25000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 126Hz
• Mechanical quality factor QMS 2.49
• Electrical quality factor QES 0.96
• Total quality factor QTS 0.69

Large signal parameters

• Maximum linear excursion xmax 3mm
• Maximum excursion before damage xlim 6mm
• Air volume displaced at xmax VD 38cm³
• Power handling P 80W
• Program power Pmax 250W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 0.43mH
• VC Diameter 39mm
• Winding height HVC 12mm

Magnet

• Flux density B 1.1T
• Force factor Bl 8.3N/A
• Motor constant Bl/√RE 3.33N/√W
• Air gap height HAG 6mm
• Weight 0.64kg

Diaphragm

• Effective diameter 127mm
• Effective area SD 126cm²
• Moving mass MMS 11.8g
• Moving mass (without air load) MMD 10.7g

Suspensions

• Stiffness KMS 10N/mm
• Compliance CMS 100µm/N
• Equivalent volume to the compliance VAS 3L
• Mechanical resistance RMS 4.26N·s/m

Dimensions

• Nominal diameter 8″
• 180mm
• Volume occupied by the driver (estimated) 0.83L
• Net weight 2.02kg