SUPRAVOX 400 GMF Pro

• Sensitivity (1W, 1m, infinite baffle) SPL1W 98.1dB
• Frequency response 32 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 32Hz
• Mechanical quality factor QMS 9.50
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 428cm³
• Power handling P 120W
• Program power Pmax 240W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz, estimated) LE 2.44mH

Magnet

• Flux density B 1.8T
• Force factor Bl 18N/A
• Motor constant Bl/√RE 7.06N/√W
• Diameter 220mm

Diaphragm

• Effective diameter 330mm
• Effective area SD 855cm²
• Moving mass MMS 70g
• Moving mass (without air load) MMD 52g

Suspensions

• Stiffness KMS 2.78N/mm
• Compliance CMS 360µm/N
• Equivalent volume to the compliance VAS 18L
• Mechanical resistance RMS 1.48N·s/m
• Surround material Cloth

Dimensions

• Nominal diameter 15″
• 400mm
• Overall diameter 404mm
• Baffle cutout diameter 358mm
• Overall depth 165mm
• Flange thickness 10mm
• Mounting depth 155mm
• Volume occupied by the driver (estimated) 4.1L
• Frame material Aluminium