MTX Audio T615-22

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.8dB
• Frequency response 25 - 200Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 25.7Hz
• Mechanical quality factor QMS 5.20
• Electrical quality factor QES 0.47
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 16mm
• Air volume displaced at xmax VD 1402cm³
• Power handling P 500W
• Program power Pmax 1500W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 3.1Ω
• Inductance (1kHz, in series, estimated) LE 3.54mH

Magnet

• Force factor (in series) Bl 19.9N/A
• Motor constant Bl/√RE 11.4N/√W

Diaphragm

• Effective diameter 334mm
• Effective area SD 876cm²
• Moving mass MMS 378g
• Moving mass (without air load) MMD 360g

Suspensions

• Stiffness KMS 9.9N/mm
• Compliance CMS 101µm/N
• Equivalent volume to the compliance VAS 110L
• Mechanical resistance RMS 11.7N·s/m

Dimensions

• Nominal diameter 15″
• 380mm
• Volume occupied by the driver (estimated) 4.3L