ESX QXE12D2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.2dB

Thiele & Small parameters

• Resonance frequency (free air) fS 34Hz
• Mechanical quality factor QMS 5.29
• Electrical quality factor QES 0.38
• Total quality factor QTS 0.36

Large signal parameters

• Maximum linear excursion xmax 14mm
• Maximum excursion before damage xlim 22mm
• Air volume displaced at xmax VD 714cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.8Ω
• Inductance (1kHz, in series) LE 2.63mH
• VC Diameter 76mm
• Winding height HVC 40mm
• Former material BASV

Magnet

• Force factor (in series) Bl 26.4N/A
• Motor constant Bl/√RE 13.5N/√W
• Diameter 190mm
• Height 50mm
• Weight 5.67kg

Diaphragm

• Effective diameter 255mm
• Effective area SD 510cm²
• Moving mass MMS 319g
• Moving mass (without air load) MMD 310g
• Material Non-pressed Paper

Suspensions

• Stiffness KMS 14.7N/mm
• Compliance CMS 68µm/N
• Equivalent volume to the compliance VAS 25L
• Mechanical resistance RMS 12.9N·s/m
• Surround material Foam
• Spider material Dual Nomex

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 325mm
• Baffle cutout diameter 285mm
• Mounting depth 185mm
• Volume occupied by the driver (estimated) 6.9L
• Net weight 15.0kg
• Frame material Diecast Aluminium