Pride M45.18 D2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.5dB

Thiele & Small parameters

• Resonance frequency (free air) fS 27.2Hz
• Mechanical quality factor QMS 3.91
• 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 2Ω
• DC resistance (in series) RE 2.6Ω
• Inductance (1kHz, in series, estimated) LE 3.33mH
• VC Diameter 101.6mm
• Winding material Flat aluminum

Magnet

• Force factor (in series) Bl 27.9N/A
• Motor constant Bl/√RE 17.3N/√W
• Diameter 256mm
• Height 78mm

Diaphragm

• Effective diameter 327mm
• Effective area SD 840cm²
• Moving mass MMS 442g
• Moving mass (without air load) MMD 425g
• Material Carbon (real)

Suspensions

• Stiffness KMS 11.4N/mm
• Compliance CMS 88µm/N
• Equivalent volume to the compliance VAS 88.5L
• Mechanical resistance RMS 19.3N·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