MONACOR SPH-8M

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.9dB
• Frequency response 35 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 35Hz
• Mechanical quality factor QMS 2.26
• Electrical quality factor QES 0.50
• Total quality factor QTS 0.41

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 108cm³
• Power handling P 100W
• Program power Pmax 150W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 0.78mH
• VC Diameter 38mm
• Winding material Aluminium

Magnet

• Force factor Bl 9.01N/A
• Motor constant Bl/√RE 3.53N/√W
• Diameter 110mm
• Weight 0.79kg

Diaphragm

• Effective diameter 175mm
• Effective area SD 240cm²
• Moving mass MMS 27g
• Moving mass (without air load) MMD 24.2g

Suspensions

• Stiffness KMS 1.41N/mm
• Compliance CMS 710µm/N
• Equivalent volume to the compliance VAS 44L
• Mechanical resistance RMS 2.63N·s/m

Dimensions

• Nominal diameter 8″
• 220mm
• Overall diameter 222mm
• Baffle cutout diameter 180mm
• Overall depth 97mm
• Flange thickness 6mm
• Mounting depth 91mm
• Volume occupied by the driver (estimated) 0.87L
• Net weight 2.2kg