Eighteen Sound 5W430

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.5dB
• Frequency response 60 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 52Hz
• Mechanical quality factor QMS 2.77
• Electrical quality factor QES 0.36
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 54cm³
• Power handling P 80W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 0.49mH
• VC Diameter 25mm
• Winding material Copper

Magnet

• Force factor Bl 6.3N/A
• Motor constant Bl/√RE 2.71N/√W
• Material Ferrite

Diaphragm

• Effective diameter 107mm
• Effective area SD 90cm²
• Moving mass MMS 8.2g
• Moving mass (without air load) MMD 7.6g

Suspensions

• Stiffness KMS 0.876N/mm
• Compliance CMS 1142µm/N
• Equivalent volume to the compliance VAS 15L
• Mechanical resistance RMS 0.97N·s/m

Dimensions

• Nominal diameter 5″
• 125mm
• Overall diameter 134mm
• Baffle cutout diameter 124mm
• Overall depth 72mm
• Flange thickness 4mm
• Mounting depth 68mm
• Volume occupied by the driver (estimated) 0.35L
• Net weight 1.2kg