MONACOR SP-90

• Sensitivity (1W, 1m, infinite baffle) SPL1W 89.3dB
• Frequency response 45 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 3.36
• Electrical quality factor QES 0.68
• Total quality factor QTS 0.57

Large signal parameters

• Maximum linear excursion xmax 2mm
• Air volume displaced at xmax VD 42cm³
• Power handling P 35W
• Program power Pmax 70W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.5Ω
• Inductance (1kHz) LE 0.5mH
• VC Diameter 25mm
• Winding material Aluminium

Magnet

• Force factor Bl 6.8N/A
• Motor constant Bl/√RE 2.67N/√W
• Diameter 100mm
• Weight 0.38kg

Diaphragm

• Effective diameter 164mm
• Effective area SD 210cm²
• Moving mass MMS 17g
• Moving mass (without air load) MMD 14.8g

Suspensions

• Stiffness KMS 1.25N/mm
• Compliance CMS 800µm/N
• Equivalent volume to the compliance VAS 42L
• Mechanical resistance RMS 1.43N·s/m

Dimensions

• Nominal diameter 8″
• 205mm
• Overall diameter 205mm
• Baffle cutout diameter 185mm
• Overall depth 90mm
• Flange thickness 9mm
• Mounting depth 81mm
• Volume occupied by the driver (estimated) 0.54L
• Net weight 1.223kg