MONACOR SPH-174KE

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.5dB
• Frequency response 42 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 42Hz
• Mechanical quality factor QMS 2.59
• Electrical quality factor QES 0.64
• Total quality factor QTS 0.51

Large signal parameters

• Maximum linear excursion xmax 3mm
• Air volume displaced at xmax VD 41cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.4Ω
• Inductance (1kHz) LE 0.43mH
• VC Diameter 25mm
• Winding material Aluminium

Magnet

• Force factor Bl 6.1N/A
• Motor constant Bl/√RE 2.41N/√W
• Diameter 80mm
• Weight 0.32kg

Diaphragm

• Effective diameter 132mm
• Effective area SD 137cm²
• Moving mass MMS 14.2g
• Moving mass (without air load) MMD 13g

Suspensions

• Stiffness KMS 1.02N/mm
• Compliance CMS 980µm/N
• Equivalent volume to the compliance VAS 26L
• Mechanical resistance RMS 1.45N·s/m

Dimensions

• Nominal diameter 6.5″
• 168mm
• Overall diameter 168mm
• Baffle cutout diameter 145mm
• Overall depth 75mm
• Flange thickness 7mm
• Mounting depth 68mm
• Volume occupied by the driver (estimated) 0.35L
• Net weight 0.9kg