MONACOR SPH-225C

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.7dB
• Frequency response 39 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 4.94
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 6mm
• Air volume displaced at xmax VD 121cm³
• Power handling P 120W
• Program power Pmax 200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.8mH
• VC Diameter 50mm
• Winding material Kapton

Magnet

• Force factor Bl 13.2N/A
• Motor constant Bl/√RE 5.42N/√W
• Diameter 140mm
• Weight 1.1kg

Diaphragm

• Effective diameter 160mm
• Effective area SD 201cm²
• Moving mass MMS 36.6g
• Moving mass (without air load) MMD 34.4g

Suspensions

• Stiffness KMS 2.33N/mm
• Compliance CMS 430µm/N
• Equivalent volume to the compliance VAS 24L
• Mechanical resistance RMS 1.82N·s/m

Dimensions

• Nominal diameter 8″
• 222mm
• Overall diameter 222mm
• Baffle cutout diameter 181mm
• Overall depth 102mm
• Flange thickness 5mm
• Mounting depth 97mm
• Volume occupied by the driver (estimated) 1.2L
• Net weight 3.52kg