Hertz Cento CX 130

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.4dB
• Frequency response 65 - 22Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 80Hz
• Mechanical quality factor QMS 3.50
• Electrical quality factor QES 0.67
• Total quality factor QTS 0.56

Large signal parameters

• Maximum linear excursion xmax 3.1mm
• Maximum excursion before damage xlim 3.8mm
• Air volume displaced at xmax VD 30cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.2Ω
• Inductance (1kHz) LE 0.18mH
• VC Diameter 25mm

Magnet

• Force factor Bl 4.2N/A
• Motor constant Bl/√RE 2.35N/√W
• Diameter 80mm
• Material Ferrite

Diaphragm

• Effective diameter 110mm
• Effective area SD 95cm²
• Moving mass MMS 7.6g
• Moving mass (without air load) MMD 7g
• Material Semi-pressed paper + Mica

Suspensions

• Stiffness KMS 2N/mm
• Compliance CMS 500µm/N
• Equivalent volume to the compliance VAS 13.5L
• Mechanical resistance RMS 1.09N·s/m

Dimensions

• Nominal diameter 5″
• 130mm
• Overall diameter 130mm
• Baffle cutout diameter 119mm
• Overall depth 66mm
• Flange thickness 16mm
• Mounting depth 50mm
• Volume occupied by the driver (estimated) 0.24L
• Net weight 0.73kg