MONACOR SPH-250TC

• Sensitivity (1W, 1m, infinite baffle) SPL1W 90.6dB
• Frequency response 26 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 26Hz
• Mechanical quality factor QMS 3.31
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.25

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Air volume displaced at xmax VD 156cm³
• Power handling P 200W
• Program power Pmax 300W

Voice Coil

• Nominal impedance Z 2 x 8Ω
• DC resistance (in series) RE 13.6Ω
• Inductance (1kHz, in series) LE 4.4mH
• VC Diameter 50mm
• Winding material Kapton

Magnet

• Force factor (in series) Bl 22.2N/A
• Motor constant Bl/√RE 6.02N/√W
• Diameter 145mm
• Weight 1.2kg

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 55g
• Moving mass (without air load) MMD 50.3g

Suspensions

• Stiffness KMS 2N/mm
• Compliance CMS 500µm/N
• Equivalent volume to the compliance VAS 84L
• Mechanical resistance RMS 2.71N·s/m

Dimensions

• Nominal diameter 10″
• 258mm
• Overall diameter 258mm
• Baffle cutout diameter 232mm
• Overall depth 128mm
• Flange thickness 9mm
• Mounting depth 119mm
• Volume occupied by the driver (estimated) 1.6L
• Net weight 3.7kg