MONACOR SPP-250

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.5dB
• Frequency response 30 - 3000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 3.29
• Electrical quality factor QES 1.25
• Total quality factor QTS 0.90

Large signal parameters

• Maximum linear excursion xmax 3.5mm
• Air volume displaced at xmax VD 121cm³
• Power handling P 37W
• Program power Pmax 75W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 0.8mH
• VC Diameter 35.5mm
• Winding material Aluminium

Magnet

• Force factor Bl 5.4N/A
• Motor constant Bl/√RE 2.12N/√W
• Diameter 100mm
• Weight 0.37kg

Diaphragm

• Effective diameter 210mm
• Effective area SD 346cm²
• Moving mass MMS 30g
• Moving mass (without air load) MMD 25.4g

Suspensions

• Stiffness KMS 1.09N/mm
• Compliance CMS 920µm/N
• Equivalent volume to the compliance VAS 155L
• Mechanical resistance RMS 1.72N·s/m

Dimensions

• Nominal diameter 10″
• 255mm
• Overall diameter 255mm
• Baffle cutout diameter 235mm
• Overall depth 110mm
• Flange thickness 9mm
• Mounting depth 101mm
• Volume occupied by the driver (estimated) 0.8L
• Net weight 1.491kg