Scan-Speak Revelator 32W/4878T11

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92dB
• Frequency response 24 - 1500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 24Hz
• Mechanical quality factor QMS 4.25
• Electrical quality factor QES 0.22
• Total quality factor QTS 0.21

Large signal parameters

• Maximum linear excursion xmax 7mm
• Maximum excursion before damage xlim 28mm
• Air volume displaced at xmax VD 368cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz, estimated) LE 0.68mH
• VC Diameter 75mm
• Winding height HVC 22mm
• Former material Titanium

Magnet

• Force factor Bl 14N/A
• Motor constant Bl/√RE 7.95N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 260mm
• Effective area SD 526cm²
• Moving mass MMS 93g
• Moving mass (without air load) MMD 84.2g
• Material Paper sandwich

Suspensions

• Stiffness KMS 2.13N/mm
• Compliance CMS 470µm/N
• Equivalent volume to the compliance VAS 185L
• Mechanical resistance RMS 3.3N·s/m
• Surround material Coated foam

Dimensions

• Nominal diameter 12″
• 320mm
• Volume occupied by the driver 3.22L
• Net weight 9.8kg