Audes 75W87-8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.1dB
• Frequency response 40 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 36Hz
• Mechanical quality factor QMS 1.99
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 94cm³
• Power handling P 130W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.4Ω
• Inductance (1kHz) LE 1.1mH
• VC Diameter 50mm
• Winding height HVC 16mm

Magnet

• Force factor Bl 11.1N/A
• Motor constant Bl/√RE 4.39N/√W
• Air gap height HAG 7mm
• Weight 1.36kg

Diaphragm

• Effective diameter 163mm
• Effective area SD 209cm²
• Moving mass MMS 32.2g
• Moving mass (without air load) MMD 30g

Suspensions

• Stiffness KMS 1.61N/mm
• Compliance CMS 620µm/N
• Equivalent volume to the compliance VAS 38.2L
• Mechanical resistance RMS 3.64N·s/m

Dimensions

• Nominal diameter 8″
• 203mm
• Volume occupied by the driver (estimated) 1.4L
• Net weight 3.2kg