Hertz MG 15 BASS

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.8dB
• Frequency response 28 - 700Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 5.55
• Electrical quality factor QES 0.55
• Total quality factor QTS 0.50

Large signal parameters

• Maximum linear excursion xmax 20mm
• Maximum excursion before damage xlim 35mm
• Air volume displaced at xmax VD 1699cm³
• Power handling P 2000W
• Program power Pmax 8000W

Voice Coil

• Nominal impedance Z 2 x 1Ω
• DC resistance (in series) RE 2.3Ω
• Inductance (1kHz, in series, estimated) LE 2.64mH
• VC Diameter 75mm

Magnet

• Force factor (in series) Bl 17.2N/A
• Motor constant Bl/√RE 11.3N/√W

Diaphragm

• Effective diameter 334mm
• Effective area SD 850cm²
• Moving mass MMS 375g
• Moving mass (without air load) MMD 358g
• Material Water-repellent, pressed paper

Suspensions

• Stiffness KMS 12.5N/mm
• Compliance CMS 80µm/N
• Equivalent volume to the compliance VAS 81.9L
• Mechanical resistance RMS 12.7N·s/m

Dimensions

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