MONACOR SPH-175HQ

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.2dB
• Frequency response 39 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 2.57
• Electrical quality factor QES 0.50
• Total quality factor QTS 0.42

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Air volume displaced at xmax VD 77cm³
• Power handling P 70W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 0.71mH
• VC Diameter 25mm
• Winding material Aluminium

Magnet

• Force factor Bl 6.4N/A
• Motor constant Bl/√RE 2.51N/√W
• Diameter 90mm
• Weight 0.45kg

Diaphragm

• Effective diameter 134mm
• Effective area SD 140cm²
• Moving mass MMS 13.9g
• Moving mass (without air load) MMD 12.6g

Suspensions

• Stiffness KMS 0.833N/mm
• Compliance CMS 1200µm/N
• Equivalent volume to the compliance VAS 33L
• Mechanical resistance RMS 1.33N·s/m

Dimensions

• Nominal diameter 6.75″
• 175mm
• Overall diameter 175mm
• Baffle cutout diameter 152mm
• Overall depth 79mm
• Flange thickness 6mm
• Mounting depth 73mm
• Volume occupied by the driver (estimated) 0.47L
• Net weight 1.31kg