Scan-Speak 32W/4878T05

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.3dB
• Frequency response 17 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 17Hz
• Mechanical quality factor QMS 7.00
• Electrical quality factor QES 0.33
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 14mm
• Maximum excursion before damage xlim 28mm
• Air volume displaced at xmax VD 736cm³
• Power handling P 200W
• Program power Pmax 550W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz, estimated) LE 2.06mH
• VC Diameter 75mm
• Winding height HVC 36mm
• Former material Titanium

Magnet

• Force factor Bl 12.5N/A
• Motor constant Bl/√RE 7.1N/√W
• Air gap height HAG 8mm

Diaphragm

• Effective diameter 260mm
• Effective area SD 526cm²
• Moving mass MMS 165g
• Moving mass (without air load) MMD 156g
• Material Paper sandwich

Suspensions

• Stiffness KMS 1.92N/mm
• Compliance CMS 520µm/N
• Equivalent volume to the compliance VAS 180L
• Mechanical resistance RMS 2.42N·s/m

Dimensions

• Nominal diameter 12″
• 320mm
• Volume occupied by the driver 2.65L
• Net weight 7.5kg
• Frame material Die cast Aluminium