Hertz Mille MPS 300 S2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.9dB
• Frequency response 25 - 400Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 24Hz
• Mechanical quality factor QMS 7.50
• Electrical quality factor QES 0.55
• Total quality factor QTS 0.51

Large signal parameters

• Maximum linear excursion xmax 16.8mm
• Maximum excursion before damage xlim 20mm
• Air volume displaced at xmax VD 899cm³
• Power handling P 500W
• Program power Pmax 1000W

Voice Coil

• Nominal impedance Z 2Ω
• DC resistance RE 1.9Ω
• Inductance (1kHz) LE 1.48mH
• VC Diameter 38mm

Magnet

• Force factor Bl 12.3N/A
• Motor constant Bl/√RE 8.92N/√W
• Diameter 156mm
• Height 36mm
• Material Ferrite

Diaphragm

• Effective diameter 263mm
• Effective area SD 535cm²
• Moving mass MMS 295g
• Moving mass (without air load) MMD 286g
• Material Polypropylene

Suspensions

• Stiffness KMS 6.25N/mm
• Compliance CMS 160µm/N
• Equivalent volume to the compliance VAS 64.9L
• Mechanical resistance RMS 5.93N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 318mm
• Baffle cutout diameter 283mm
• Overall depth 109mm
• Flange thickness 21mm
• Mounting depth 88mm
• Volume occupied by the driver (estimated) 2.4L
• Net weight 6.64kg