Dayton Audio Designer DSA270-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.1dB
• Frequency response 29 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 29.6Hz
• Mechanical quality factor QMS 2.09
• Electrical quality factor QES 0.47
• Total quality factor QTS 0.39

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Air volume displaced at xmax VD 194cm³
• Power handling P 100W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 1.07mH
• VC Diameter 38.5mm
• Winding material Copper
• Former material Aluminum

Magnet

• Force factor Bl 11.2N/A
• Motor constant Bl/√RE 4.82N/√W
• Weight 1.758kg
• Material Ferrite

Diaphragm

• Effective diameter 212mm
• Effective area SD 353cm²
• Moving mass MMS 59.6g
• Moving mass (without air load) MMD 54.7g
• Material Aluminum

Suspensions

• Stiffness KMS 2.04N/mm
• Compliance CMS 490µm/N
• Equivalent volume to the compliance VAS 88.1L
• Mechanical resistance RMS 5.31N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 10″
• 270mm
• Overall diameter 270mm
• Baffle cutout diameter 227mm
• Overall depth 112mm
• Volume occupied by the driver (estimated) 1.4L
• Frame material Steel