MTX Audio TX815

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.1dB
• Frequency response 26 - 500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 5.46
• Electrical quality factor QES 0.56
• Total quality factor QTS 0.51

Large signal parameters

• Maximum linear excursion xmax 12.5mm
• Air volume displaced at xmax VD 992cm³
• Power handling P 2000W
• Program power Pmax 6000W

Voice Coil

• Nominal impedance Z 2Ω
• DC resistance RE 2.0Ω
• Inductance (1kHz, estimated) LE 2.42mH

Magnet

• Force factor Bl 19N/A
• Motor constant Bl/√RE 13.4N/√W

Diaphragm

• Effective diameter 318mm
• Effective area SD 793cm²
• Moving mass MMS 407g
• Moving mass (without air load) MMD 391g

Suspensions

• Stiffness KMS 20N/mm
• Compliance CMS 50µm/N
• Equivalent volume to the compliance VAS 44.7L
• Mechanical resistance RMS 16.4N·s/m

Dimensions

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