SUPRAVOX 285-2000

• Sensitivity (1W, 1m, infinite baffle) SPL1W 103dB
• Frequency response 45 - 7000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 6.00
• Electrical quality factor QES 0.22
• Total quality factor QTS 0.20

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 188cm³
• Power handling P 70W
• Program power Pmax 140W

Voice Coil

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

Magnet

• Flux density B 2.1T
• Force factor Bl 12N/A
• Motor constant Bl/√RE 4.71N/√W
• Weight 3.5kg
• Material Alnico

Diaphragm

• Effective diameter 245mm
• Effective area SD 471cm²
• Moving mass MMS 18.5g
• Moving mass (without air load) MMD 11.3g

Suspensions

• Stiffness KMS 1.67N/mm
• Compliance CMS 600µm/N
• Equivalent volume to the compliance VAS 200L
• Mechanical resistance RMS 0.87N·s/m
• Surround material Paper

Dimensions

• Nominal diameter 12″
• 285mm
• Overall diameter 290mm
• Baffle cutout diameter 280mm
• Overall depth 180mm
• Flange thickness 8mm
• Mounting depth 172mm
• Volume occupied by the driver (estimated) 3L
• Frame material Aluminium