Pride M45.18 D1

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.3dB

Thiele & Small parameters

• Resonance frequency (free air) fS 26.4Hz
• Mechanical quality factor QMS 3.88
• Electrical quality factor QES 0.25
• Total quality factor QTS 0.23

Large signal parameters

• Maximum linear excursion xmax 36mm
• Air volume displaced at xmax VD 3024cm³
• Power handling P 4500W
• Program power Pmax 9000W

Voice Coil

• Nominal impedance Z 2 x 1Ω
• DC resistance (in series) RE 1.4Ω
• Inductance (1kHz, in series, estimated) LE 1.78mH
• VC Diameter 101.6mm
• Winding material Flat aluminum

Magnet

• Force factor (in series) Bl 19.9N/A
• Motor constant Bl/√RE 16.8N/√W
• Diameter 256mm
• Height 78mm

Diaphragm

• Effective diameter 327mm
• Effective area SD 840cm²
• Moving mass MMS 439g
• Moving mass (without air load) MMD 422g
• Material Carbon (real)

Suspensions

• Stiffness KMS 11.4N/mm
• Compliance CMS 88µm/N
• Equivalent volume to the compliance VAS 87.9L
• Mechanical resistance RMS 18.8N·s/m

Dimensions

• Nominal diameter 15″
• 397mm
• Overall diameter 397mm
• Baffle cutout diameter 365mm
• Mounting depth 275mm
• Volume occupied by the driver 8L
• Net weight 43.0kg
• Frame material Aluminium