MTX Audio T9922-44

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.7dB
• Frequency response 20 - 150Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 16.8Hz
• Mechanical quality factor QMS 5.19
• Electrical quality factor QES 0.60
• Total quality factor QTS 0.54

Large signal parameters

• Maximum linear excursion xmax 31.8mm
• Air volume displaced at xmax VD 5213cm³
• Power handling P 4000W
• Program power Pmax 8000W

Voice Coil

• Nominal impedance Z 2 x 4Ω
• DC resistance (in series) RE 6.6Ω
• Inductance (1kHz, in series, estimated) LE 18.6mH
• VC Diameter 165.1mm

Magnet

• Force factor (in series) Bl 40.8N/A
• Motor constant Bl/√RE 15.8N/√W
• Weight 25.5kg

Diaphragm

• Effective diameter 457mm
• Effective area SD 1642cm²
• Moving mass MMS 1428g
• Moving mass (without air load) MMD 1380g

Suspensions

• Stiffness KMS 15.9N/mm
• Compliance CMS 63µm/N
• Equivalent volume to the compliance VAS 239L
• Mechanical resistance RMS 29N·s/m

Dimensions

• Nominal diameter 22″
• 560mm
• Baffle cutout diameter 514mm
• Mounting depth 535mm
• Volume occupied by the driver 51L