MONACOR SPM-100/8

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.2dB
• Frequency response 75 - 18000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 75Hz
• Mechanical quality factor QMS 1.96
• Electrical quality factor QES 1.01
• Total quality factor QTS 0.67

Large signal parameters

• Maximum linear excursion xmax 1mm
• Air volume displaced at xmax VD 5.7cm³
• Power handling P 25W
• Program power Pmax 50W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 7.2Ω
• Inductance (1kHz) LE 0.4mH
• VC Diameter 20.4mm
• Winding material Aluminium

Magnet

• Force factor Bl 4.1N/A
• Motor constant Bl/√RE 1.53N/√W
• Diameter 70mm
• Weight 0.22kg

Diaphragm

• Effective diameter 85mm
• Effective area SD 57cm²
• Moving mass MMS 4.4g
• Moving mass (without air load) MMD 4.1g

Suspensions

• Stiffness KMS 1.25N/mm
• Compliance CMS 800µm/N
• Equivalent volume to the compliance VAS 4L
• Mechanical resistance RMS 1.06N·s/m

Dimensions

• Nominal diameter 4″
• 102mm
• Overall diameter 102mm
• Baffle cutout diameter 94mm
• Overall depth 58mm
• Flange thickness 5mm
• Mounting depth 53mm
• Volume occupied by the driver (estimated) 0.15L
• Net weight 0.538kg