SUPRAVOX 215 RTF 64 Bi-cone

• Sensitivity (1W, 1m, infinite baffle) SPL1W 96.5dB
• Frequency response 50 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 52Hz
• Mechanical quality factor QMS 5.00
• Electrical quality factor QES 0.60
• Total quality factor QTS 0.53

Large signal parameters

• Maximum linear excursion xmax 2mm
• Air volume displaced at xmax VD 53cm³
• Power handling P 35W
• Program power Pmax 70W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz, estimated) LE 0.64mH

Magnet

• Flux density B 1.5T
• Force factor Bl 5.3N/A
• Motor constant Bl/√RE 2.08N/√W
• Diameter 120mm

Diaphragm

• Effective diameter 183mm
• Effective area SD 263cm²
• Moving mass MMS 9.5g
• Moving mass (without air load) MMD 6.4g

Suspensions

• Stiffness KMS 1.25N/mm
• Compliance CMS 800µm/N
• Equivalent volume to the compliance VAS 75L
• Mechanical resistance RMS 0.62N·s/m
• Surround material Paper

Dimensions

• Nominal diameter 8″
• 215mm
• Overall diameter 224mm
• Baffle cutout diameter 212mm
• Overall depth 100mm
• Flange thickness 10mm
• Mounting depth 90mm
• Volume occupied by the driver (estimated) 0.96L
• Frame material Aluminium