DB Drive WDX15 3KD2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.7dB

Thiele & Small parameters

• Resonance frequency (free air) fS 50.8Hz
• Mechanical quality factor QMS 9.04
• Electrical quality factor QES 1.03
• Total quality factor QTS 0.92

Large signal parameters

• Maximum linear excursion xmax 13.5mm
• Air volume displaced at xmax VD 1221cm³
• Power handling P 1500W
• Program power Pmax 3000W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 6.4Ω
• Inductance (1kHz, in series) LE 2.9mH

Magnet

• Force factor (in series) Bl 29.7N/A
• Motor constant Bl/√RE 11.7N/√W

Diaphragm

• Effective diameter 339mm
• Effective area SD 904cm²
• Moving mass MMS 444g
• Moving mass (without air load) MMD 426g

Suspensions

• Stiffness KMS 50N/mm
• Compliance CMS 20µm/N
• Equivalent volume to the compliance VAS 23.2L
• Mechanical resistance RMS 15.7N·s/m

Dimensions

• Nominal diameter 15″
• 381mm
• Volume occupied by the driver (estimated) 4.3L