Dayton Audio Reference RS100-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83dB
• Frequency response 80 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 84.8Hz
• Mechanical quality factor QMS 2.55
• Electrical quality factor QES 0.66
• Total quality factor QTS 0.53

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 14cm³
• Power handling P 30W
• Program power Pmax 60W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz) LE 0.28mH
• VC Diameter 25mm
• Winding material Copper
• Former material Aluminum

Magnet

• Force factor Bl 3.18N/A
• Motor constant Bl/√RE 1.84N/√W
• Material Ferrite

Diaphragm

• Effective diameter 67mm
• Effective area SD 35.3cm²
• Moving mass MMS 4.3g
• Moving mass (without air load) MMD 4.1g
• Material Black Anodized Aluminum

Suspensions

• Stiffness KMS 1.21N/mm
• Compliance CMS 830µm/N
• Equivalent volume to the compliance VAS 1.45L
• Mechanical resistance RMS 0.9N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 4″
• 98mm
• Overall diameter 98mm
• Baffle cutout diameter 77mm
• Overall depth 51mm
• Volume occupied by the driver (estimated) 0.13L
• Frame material Cast Aluminium