PowerBass XL-1040TD

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.2dB
• Frequency response 35 - 500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 3.66
• Electrical quality factor QES 0.58
• Total quality factor QTS 0.49

Large signal parameters

• Maximum linear excursion xmax 7.5mm
• Air volume displaced at xmax VD 260cm³
• Power handling P 350W
• Program power Pmax 700W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz, estimated) LE 2.12mH
• VC Diameter 51mm

Magnet

• Force factor Bl 14.7N/A
• Motor constant Bl/√RE 8.21N/√W
• Weight 3.29kg

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 164g
• Moving mass (without air load) MMD 160g
• Material Injection molded Polypropylene

Suspensions

• Stiffness KMS 7.87N/mm
• Compliance CMS 127µm/N
• Equivalent volume to the compliance VAS 21L
• Mechanical resistance RMS 9.87N·s/m

Dimensions

• Nominal diameter 10″
• 254mm
• Baffle cutout diameter 237mm
• Mounting depth 86mm
• Volume occupied by the driver (estimated) 1.5L