SEAS E0021-08S W12CY001

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83dB
• Frequency response 60 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 2.50
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.36

Large signal parameters

• Maximum linear excursion xmax 3mm
• Maximum excursion before damage xlim 4.5mm
• Air volume displaced at xmax VD 15cm³
• Power handling P 70W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.6Ω
• Inductance (1kHz) LE 0.43mH
• VC Diameter 26mm
• Winding height HVC 12mm

Magnet

• Flux density B 1.1T
• Force factor Bl 5.4N/A
• Motor constant Bl/√RE 2.28N/√W
• Air gap height HAG 6mm
• Weight 0.42kg

Diaphragm

• Effective diameter 80mm
• Effective area SD 50cm²
• Moving mass MMS 7.5g
• Moving mass (without air load) MMD 7.2g

Suspensions

• Stiffness KMS 0.588N/mm
• Compliance CMS 1700µm/N
• Equivalent volume to the compliance VAS 6L
• Mechanical resistance RMS 0.87N·s/m

Dimensions

• Nominal diameter 4.5″
• 120mm
• Volume occupied by the driver (estimated) 0.48L
• Net weight 1.21kg