MONACOR SPH-170TC

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.7dB
• Frequency response 33 - 5000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 33Hz
• Mechanical quality factor QMS 2.98
• Electrical quality factor QES 0.48
• Total quality factor QTS 0.41

Large signal parameters

• Maximum linear excursion xmax 2.3mm
• Air volume displaced at xmax VD 29cm³
• Power handling P 80W
• Program power Pmax 120W

Voice Coil

• Nominal impedance Z 2 x 8Ω
• DC resistance (in series) RE 15.2Ω
• Inductance (1kHz, in series) LE 2.4mH
• VC Diameter 25.5mm
• Winding material Kapton

Magnet

• Force factor (in series) Bl 10.4N/A
• Motor constant Bl/√RE 2.67N/√W
• Diameter 100mm
• Weight 0.38kg

Diaphragm

• Effective diameter 127mm
• Effective area SD 127cm²
• Moving mass MMS 16g
• Moving mass (without air load) MMD 14.9g

Suspensions

• Stiffness KMS 0.725N/mm
• Compliance CMS 1380µm/N
• Equivalent volume to the compliance VAS 31L
• Mechanical resistance RMS 1.11N·s/m

Dimensions

• Nominal diameter 6.5″
• 166mm
• Overall diameter 166mm
• Baffle cutout diameter 142mm
• Overall depth 82mm
• Flange thickness 8mm
• Mounting depth 74mm
• Volume occupied by the driver (estimated) 0.43L
• Net weight 1.155kg