Scan-Speak Discovery 22W/4534G00

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.7dB
• Frequency response 30 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 3.70
• Electrical quality factor QES 0.37
• Total quality factor QTS 0.34

Large signal parameters

• Maximum linear excursion xmax 5.7mm
• Maximum excursion before damage xlim 12mm
• Air volume displaced at xmax VD 134cm³
• Power handling P 70W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz, estimated) LE 0.55mH
• VC Diameter 38mm
• Winding height HVC 17.3mm

Magnet

• Force factor Bl 6N/A
• Motor constant Bl/√RE 3.46N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 173mm
• Effective area SD 235cm²
• Moving mass MMS 23.7g
• Moving mass (without air load) MMD 21g
• Material Coated Fibre Glass

Suspensions

• Stiffness KMS 0.813N/mm
• Compliance CMS 1230µm/N
• Equivalent volume to the compliance VAS 95L
• Mechanical resistance RMS 1.19N·s/m
• Surround material SBR Rubber

Dimensions

• Nominal diameter 8″
• 220mm
• Volume occupied by the driver 0.55L
• Net weight 2.1kg
• Frame material Die cast Aluminium