MONACOR SPH-210

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.8dB
• Frequency response 28 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 28Hz
• Mechanical quality factor QMS 2.14
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.24

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 74cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 1mH
• VC Diameter 35.5mm
• Winding material Aluminium

Magnet

• Force factor Bl 10.3N/A
• Motor constant Bl/√RE 4.04N/√W
• Diameter 120mm
• Weight 0.84kg

Diaphragm

• Effective diameter 164mm
• Effective area SD 210cm²
• Moving mass MMS 24.5g
• Moving mass (without air load) MMD 22.2g

Suspensions

• Stiffness KMS 0.758N/mm
• Compliance CMS 1320µm/N
• Equivalent volume to the compliance VAS 81L
• Mechanical resistance RMS 2.01N·s/m

Dimensions

• Nominal diameter 8″
• 210mm
• Overall diameter 210mm
• Baffle cutout diameter 183mm
• Overall depth 99mm
• Flange thickness 10mm
• Mounting depth 89mm
• Volume occupied by the driver (estimated) 0.93L
• Net weight 2.52kg