ESX QXE6D2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 79.8dB

Thiele & Small parameters

• Resonance frequency (free air) fS 50.4Hz
• Mechanical quality factor QMS 5.21
• Electrical quality factor QES 0.47
• Total quality factor QTS 0.43

Large signal parameters

• Maximum linear excursion xmax 10mm
• Maximum excursion before damage xlim 15mm
• Air volume displaced at xmax VD 120cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.8Ω
• Inductance (1kHz, in series) LE 1.93mH
• VC Diameter 50mm
• Winding height HVC 30mm
• Former material Aluminium

Magnet

• Force factor (in series) Bl 15.3N/A
• Motor constant Bl/√RE 7.85N/√W
• Diameter 134mm
• Height 40mm
• Weight 2.268kg

Diaphragm

• Effective diameter 124mm
• Effective area SD 120cm²
• Moving mass MMS 91.5g
• Moving mass (without air load) MMD 90.4g
• Material Non-pressed Paper

Suspensions

• Stiffness KMS 6.37N/mm
• Compliance CMS 157µm/N
• Equivalent volume to the compliance VAS 3.2L
• Mechanical resistance RMS 5.56N·s/m
• Surround material Foam
• Spider material Dual Nomex

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 179mm
• Baffle cutout diameter 150mm
• Mounting depth 117mm
• Volume occupied by the driver (estimated) 2.4L
• Net weight 5.6kg
• Frame material Diecast Aluminium