PowerBass XL-1040MF

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.1dB
• Frequency response 35 - 500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 38Hz
• Mechanical quality factor QMS 4.20
• Electrical quality factor QES 0.72
• Total quality factor QTS 0.68

Large signal parameters

• Maximum linear excursion xmax 9.5mm
• Air volume displaced at xmax VD 317cm³
• Power handling P 200W
• Program power Pmax 400W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz, estimated) LE 1.42mH
• VC Diameter 51mm

Magnet

• Force factor Bl 10.9N/A
• Motor constant Bl/√RE 5.91N/√W
• Weight 1.11kg

Diaphragm

• Effective diameter 206mm
• Effective area SD 333cm²
• Moving mass MMS 82g
• Moving mass (without air load) MMD 77.6g
• Material Polypropylene

Suspensions

• Stiffness KMS 7.41N/mm
• Compliance CMS 135µm/N
• Equivalent volume to the compliance VAS 29L
• Mechanical resistance RMS 4.66N·s/m

Dimensions

• Nominal diameter 10″
• 254mm
• Baffle cutout diameter 232mm
• Mounting depth 131mm
• Volume occupied by the driver (estimated) 1.5L