Dayton Audio Signature SIG150-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.4dB
• Frequency response 60 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 61.5Hz
• Mechanical quality factor QMS 5.78
• Electrical quality factor QES 0.53
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 38cm³
• Power handling P 60W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.7Ω
• Inductance (1kHz) LE 0.35mH
• VC Diameter 26.7mm
• Winding material Copper
• Former material Glass fiber

Magnet

• Force factor Bl 5.2N/A
• Motor constant Bl/√RE 2.7N/√W
• Material Ferrite

Diaphragm

• Effective diameter 111mm
• Effective area SD 96cm²
• Moving mass MMS 10.2g
• Moving mass (without air load) MMD 9.5g
• Material Aluminum

Suspensions

• Stiffness KMS 1.52N/mm
• Compliance CMS 660µm/N
• Equivalent volume to the compliance VAS 8.7L
• Mechanical resistance RMS 0.68N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 5.25″
• 150mm
• Overall diameter 152mm
• Baffle cutout diameter 120mm
• Overall depth 67mm
• Volume occupied by the driver (estimated) 0.33L
• Frame material Cast Aluminium