MONACOR SPH-170C

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.7dB
• Frequency response 38 - 3500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 38Hz
• Mechanical quality factor QMS 7.22
• Electrical quality factor QES 0.27
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 4mm
• Air volume displaced at xmax VD 51cm³
• Power handling P 60W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.0Ω
• Inductance (1kHz) LE 0.8mH
• VC Diameter 37mm
• Winding material Kapton

Magnet

• Force factor Bl 9.44N/A
• Motor constant Bl/√RE 3.85N/√W
• Diameter 100mm
• Weight 0.6kg

Diaphragm

• Effective diameter 127mm
• Effective area SD 127cm²
• Moving mass MMS 16.4g
• Moving mass (without air load) MMD 15.3g

Suspensions

• Stiffness KMS 0.943N/mm
• Compliance CMS 1060µm/N
• Equivalent volume to the compliance VAS 24L
• Mechanical resistance RMS 0.54N·s/m

Dimensions

• Nominal diameter 6.5″
• 180mm
• Overall diameter 180mm
• Baffle cutout diameter 145mm
• Overall depth 90mm
• Flange thickness 5mm
• Mounting depth 85mm
• Volume occupied by the driver (estimated) 0.68L
• Net weight 2.0kg