MONACOR SPH-75/8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.4dB
• Frequency response 85 - 16000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 85Hz
• Mechanical quality factor QMS 3.90
• Electrical quality factor QES 0.65
• Total quality factor QTS 0.56

Large signal parameters

• Maximum linear excursion xmax 0.8mm
• Air volume displaced at xmax VD 2.4cm³
• Power handling P 15W
• Program power Pmax 30W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 0.15mH
• VC Diameter 20.5mm
• Winding material Kapton

Magnet

• Force factor Bl 3.4N/A
• Motor constant Bl/√RE 1.37N/√W
• Diameter 70mm
• Weight 0.15kg

Diaphragm

• Effective diameter 64mm
• Effective area SD 32cm²
• Moving mass MMS 2.7g
• Moving mass (without air load) MMD 2.6g

Suspensions

• Stiffness KMS 0.769N/mm
• Compliance CMS 1300µm/N
• Equivalent volume to the compliance VAS 1.9L
• Mechanical resistance RMS 0.37N·s/m

Dimensions

• Nominal diameter 3″
• 78 x 78mm
• Overall size 78 x 78mm
• Baffle cutout diameter 72mm
• Overall depth 42mm
• Flange thickness 1mm
• Mounting depth 41mm
• Volume occupied by the driver (estimated) 0.11L
• Net weight 0.4kg