Dayton Audio Max-X MX12-22

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.2dB
• Frequency response 23 - 450Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 28.8Hz
• Mechanical quality factor QMS 3.25
• Electrical quality factor QES 0.39
• Total quality factor QTS 0.35

Large signal parameters

• Maximum linear excursion xmax 15.5mm
• Air volume displaced at xmax VD 798cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 4.0Ω
• Inductance (1kHz, in series) LE 5.09mH
• VC Diameter 63.5mm

Magnet

• Force factor (in series) Bl 21.5N/A
• Motor constant Bl/√RE 10.8N/√W
• Material Ferrite

Diaphragm

• Effective diameter 256mm
• Effective area SD 515cm²
• Moving mass MMS 252g
• Moving mass (without air load) MMD 244g
• Material Paper / Glass Fiber

Suspensions

• Stiffness KMS 8.33N/mm
• Compliance CMS 120µm/N
• Equivalent volume to the compliance VAS 45.6L
• Mechanical resistance RMS 14N·s/m
• Surround material Rubber

Dimensions

• Nominal diameter 12″
• 316mm
• Overall diameter 316mm
• Baffle cutout diameter 284mm
• Overall depth 198mm
• Volume occupied by the driver (estimated) 3.8L
• Frame material Steel