Dayton Audio Designer DS135-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.2dB
• Frequency response 50 - 7000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 52.5Hz
• Mechanical quality factor QMS 2.02
• Electrical quality factor QES 0.48
• Total quality factor QTS 0.39

Large signal parameters

• Maximum linear excursion xmax 4.9mm
• Air volume displaced at xmax VD 37cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.84mH
• VC Diameter 25.4mm
• Winding material Copper
• Former material Aluminum

Magnet

• Force factor Bl 6.23N/A
• Motor constant Bl/√RE 2.56N/√W
• Weight 0.595kg
• Material Ferrite

Diaphragm

• Effective diameter 98mm
• Effective area SD 75.4cm²
• Moving mass MMS 9.7g
• Moving mass (without air load) MMD 9.2g
• Material Coated Paper

Suspensions

• Stiffness KMS 1.05N/mm
• Compliance CMS 950µm/N
• Equivalent volume to the compliance VAS 7.27L
• Mechanical resistance RMS 1.58N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 5″
• 135mm
• Overall diameter 135mm
• Baffle cutout diameter 112mm
• Overall depth 69mm
• Volume occupied by the driver (estimated) 0.3L
• Frame material Steel