EASTECH ASDSD4018-0401

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 49.9Hz
• Mechanical quality factor QMS 4.86
• Electrical quality factor QES 0.70
• Total quality factor QTS 0.61

Large signal parameters

• Maximum linear excursion xmax 3.8mm
• Maximum excursion before damage xlim 15mm
• Air volume displaced at xmax VD 50cm³
• Power handling P 130W
• Program power Pmax 260W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.976mH
• VC Diameter 30.5mm
• Winding height HVC 13.5mm
• Winding material PESVW
• Former material Aluminum

Magnet

• Force factor Bl 7.33N/A
• Motor constant Bl/√RE 3.96N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 130mm
• Effective area SD 133cm²
• Moving mass MMS 35.1g
• Moving mass (without air load) MMD 34g
• Material Paper

Suspensions

• Stiffness KMS 3.36N/mm
• Compliance CMS 298µm/N
• Equivalent volume to the compliance VAS 7.21L
• Mechanical resistance RMS 2.26N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 6.5″
• 165mm
• Volume occupied by the driver (estimated) 0.54L
• Net weight 1.352kg
• Frame material Steel