MONACOR SPH-135TC

• Sensitivity (1W, 1m, infinite baffle) SPL1W 86.4dB
• Frequency response 40 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 3.44
• Electrical quality factor QES 0.48
• Total quality factor QTS 0.42

Large signal parameters

• Maximum linear excursion xmax 2.3mm
• Air volume displaced at xmax VD 21cm³
• Power handling P 60W
• 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 20mm
• Winding material Aluminium

Magnet

• Force factor (in series) Bl 8.4N/A
• Motor constant Bl/√RE 2.15N/√W
• Diameter 100mm
• Weight 0.38kg

Diaphragm

• Effective diameter 110mm
• Effective area SD 95cm²
• Moving mass MMS 8.9g
• Moving mass (without air load) MMD 8.2g

Suspensions

• Stiffness KMS 0.592N/mm
• Compliance CMS 1690µm/N
• Equivalent volume to the compliance VAS 16L
• Mechanical resistance RMS 0.65N·s/m

Dimensions

• Nominal diameter 5.5″
• 138mm
• Overall diameter 138mm
• Baffle cutout diameter 122mm
• Overall depth 70mm
• Flange thickness 6mm
• Mounting depth 64mm
• Volume occupied by the driver (estimated) 0.33L
• Net weight 1.08kg