SUPRAVOX 400 EXC Silver Coil

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.2dB
• Frequency response 23 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 23Hz
• Mechanical quality factor QMS 13.80
• Electrical quality factor QES 0.45
• Total quality factor QTS 0.43

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 394cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz, estimated) LE 2.34mH

Magnet

• Force factor Bl 13N/A
• Motor constant Bl/√RE 5.08N/√W
• Material Electromagnet

Diaphragm

• Effective diameter 317mm
• Effective area SD 788cm²
• Moving mass MMS 66g
• Moving mass (without air load) MMD 49.5g

Suspensions

• Stiffness KMS 2N/mm
• Compliance CMS 500µm/N
• Equivalent volume to the compliance VAS 440L
• Mechanical resistance RMS 0.69N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 15″
• 400mm
• Overall diameter 404mm
• Baffle cutout diameter 358mm
• Overall depth 215mm
• Flange thickness 10mm
• Mounting depth 205mm
• Volume occupied by the driver (estimated) 5.9L
• Frame material Aluminium