Hertz Cento CX 570
4Ω
2 Way
Nominal size | 5x7″ / 221 mm |
Resonance | 70 Hz |
Q factor | 0.67 |
Sensitivity | 89.2 dB |
Linear excursion | ± 3.5 mm |
Program Power | 140 W |
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- Sensitivity (1W, 1m, infinite baffle) SPL1W 89.2dB
- Frequency response 55 - 22000Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 70Hz
- Mechanical quality factor QMS 3.30
- Electrical quality factor QES 0.83
- Total quality factor QTS 0.67
Large signal parameters
- Maximum linear excursion xmax 3.5mm
- Maximum excursion before damage xlim 4.9mm
- Air volume displaced at xmax VD 53cm³
- Power handling P 70W
- Program power Pmax 140W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.3Ω
- Inductance (1kHz) LE 0.2mH
- VC Diameter 25mm
Magnet
- Force factor Bl 4.9N/A
- Motor constant Bl/√RE 2.7N/√W
- Diameter 85mm
- Material Ferrite
Diaphragm
- Effective diameter 139mm
- Effective area SD 152cm²
- Moving mass MMS 13g
- Moving mass (without air load) MMD 11.4g
- Material Semi-pressed paper + Mica
Suspensions
- Stiffness KMS 2.94N/mm
- Compliance CMS 340µm/N
- Equivalent volume to the compliance VAS 11.1L
- Mechanical resistance RMS 1.73N·s/m
Dimensions
- Nominal size 5 x 7″
- 221mm
- Overall diameter 221mm
- Baffle cutout diameter 182mm
- Overall depth 75mm
- Flange thickness 9mm
- Mounting depth 66mm
- Volume occupied by the driver (estimated) 0.44L
- Net weight 1.0kg
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