Scan-Speak Discovery 26W/4558T00

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86dB
• Frequency response 21 - 1500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 21Hz
• Mechanical quality factor QMS 5.56
• Electrical quality factor QES 0.33
• Total quality factor QTS 0.31

Large signal parameters

• Maximum linear excursion xmax 12.5mm
• Maximum excursion before damage xlim 28mm
• Air volume displaced at xmax VD 440cm³
• Power handling P 150W
• Program power Pmax 350W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 2.6Ω
• Inductance (1kHz, estimated) LE 1.28mH
• VC Diameter 51mm
• Winding height HVC 33mm

Magnet

• Force factor Bl 10.5N/A
• Motor constant Bl/√RE 6.51N/√W
• Air gap height HAG 8mm

Diaphragm

• Effective diameter 212mm
• Effective area SD 352cm²
• Moving mass MMS 105g
• Moving mass (without air load) MMD 100g
• Material Anodized Aluminium

Suspensions

• Stiffness KMS 1.82N/mm
• Compliance CMS 550µm/N
• Equivalent volume to the compliance VAS 94.9L
• Mechanical resistance RMS 2.49N·s/m

Dimensions

• Nominal diameter 10″
• 260mm
• Volume occupied by the driver 1.35L
• Net weight 6.2kg
• Frame material Die cast Aluminium