MTX Audio S6512-44

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86dB
• Frequency response 20 - 500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 31Hz
• Mechanical quality factor QMS 4.96
• Electrical quality factor QES 0.88
• Total quality factor QTS 0.75

Large signal parameters

• Maximum linear excursion xmax 15.5mm
• Air volume displaced at xmax VD 1131cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.9Ω
• Inductance (1kHz, in series, estimated) LE 6.4mH
• VC Diameter 50.8mm

Magnet

• Force factor (in series) Bl 20.6N/A
• Motor constant Bl/√RE 7.83N/√W

Diaphragm

• Effective diameter 305mm
• Effective area SD 730cm²
• Moving mass MMS 272g
• Moving mass (without air load) MMD 261g

Suspensions

• Stiffness KMS 10.4N/mm
• Compliance CMS 96µm/N
• Equivalent volume to the compliance VAS 76L
• Mechanical resistance RMS 10.7N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Mounting depth 176mm
• Volume occupied by the driver (estimated) 2.3L