MONACOR SPH-390TC

• Sensitivity (1W, 1m, infinite baffle) SPL1W 93dB
• Frequency response 23 - 1500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 23Hz
• Mechanical quality factor QMS 6.36
• Electrical quality factor QES 0.29
• Total quality factor QTS 0.26

Large signal parameters

• Maximum linear excursion xmax 7mm
• Air volume displaced at xmax VD 595cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 2 x 8Ω
• DC resistance (in series) RE 12.0Ω
• Inductance (1kHz, in series) LE 5.2mH
• VC Diameter 65.5mm
• Winding material Kapton

Magnet

• Force factor (in series) Bl 33.4N/A
• Motor constant Bl/√RE 9.65N/√W
• Diameter 182mm
• Weight 1.8kg

Diaphragm

• Effective diameter 329mm
• Effective area SD 850cm²
• Moving mass MMS 160g
• Moving mass (without air load) MMD 143g

Suspensions

• Stiffness KMS 3.33N/mm
• Compliance CMS 300µm/N
• Equivalent volume to the compliance VAS 284L
• Mechanical resistance RMS 3.64N·s/m

Dimensions

• Nominal diameter 15″
• 385mm
• Overall diameter 385mm
• Baffle cutout diameter 348mm
• Overall depth 170mm
• Flange thickness 10mm
• Mounting depth 160mm
• Volume occupied by the driver (estimated) 3.7L
• Net weight 6.78kg