MTX Audio T612S-44

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.1dB
• Frequency response 37 - 200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 37.6Hz
• Mechanical quality factor QMS 10.50
• Electrical quality factor QES 0.75
• Total quality factor QTS 0.70

Large signal parameters

• Maximum linear excursion xmax 15mm
• Air volume displaced at xmax VD 1053cm³
• Power handling P 600W
• Program power Pmax 1800W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.8Ω
• Inductance (1kHz, in series, estimated) LE 6.59mH

Magnet

• Force factor (in series) Bl 22.4N/A
• Motor constant Bl/√RE 8.59N/√W

Diaphragm

• Effective diameter 299mm
• Effective area SD 702cm²
• Moving mass MMS 292g
• Moving mass (without air load) MMD 281g

Suspensions

• Stiffness KMS 13.3N/mm
• Compliance CMS 75µm/N
• Equivalent volume to the compliance VAS 51.5L
• Mechanical resistance RMS 6.56N·s/m

Dimensions

• Nominal size 12 x 12″
• 300 x 300mm
• Volume occupied by the driver (estimated) 2.3L