MTX Audio TX615

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.1dB
• Frequency response 20 - 500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 28Hz
• Mechanical quality factor QMS 5.54
• Electrical quality factor QES 0.46
• Total quality factor QTS 0.43

Large signal parameters

• Maximum linear excursion xmax 14mm
• Air volume displaced at xmax VD 1174cm³
• Power handling P 1000W
• Program power Pmax 3000W

Voice Coil

• Nominal impedance Z 2Ω
• DC resistance RE 2.0Ω
• Inductance (1kHz, estimated) LE 2.12mH

Magnet

• Force factor Bl 17N/A
• Motor constant Bl/√RE 12N/√W

Diaphragm

• Effective diameter 327mm
• Effective area SD 838cm²
• Moving mass MMS 332g
• Moving mass (without air load) MMD 316g

Suspensions

• Stiffness KMS 11.1N/mm
• Compliance CMS 90µm/N
• Equivalent volume to the compliance VAS 89.8L
• Mechanical resistance RMS 10.6N·s/m

Dimensions

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