Dayton Audio RC180-55
 4Ω
Woofer
| Nominal size | 2x7″ / 55x180 mm | 
| Resonance | 52 Hz | 
| Q factor | 0.89 | 
| Sensitivity | 76.3 dB | 
| Linear excursion | ± 4.7 mm | 
| Program Power | 70 W | 
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 76.3dB
 - Frequency response 50 - 2500Hz
 
Thiele & Small parameters
- Resonance frequency (free air) fS 52Hz
 - Mechanical quality factor QMS 3.31
 - Electrical quality factor QES 1.23
 - Total quality factor QTS 0.89
 
Large signal parameters
- Maximum linear excursion xmax 4.7mm
 - Air volume displaced at xmax VD 27cm³
 - Power handling P 35W
 - Program power Pmax 70W
 
Voice Coil
- Nominal impedance Z 4Ω
 - DC resistance RE 3.3Ω
 - Inductance (1kHz) LE 0.1mH
 - Former material Aluminum
 
Magnet
- Force factor Bl 4.23N/A
 - Motor constant Bl/√RE 2.33N/√W
 - Material Neodymium
 
Diaphragm
- Effective diameter 85mm
 - Effective area SD 56.4cm²
 - Moving mass MMS 20.1g
 - Moving mass (without air load) MMD 20.1g
 - Material Paper
 
Suspensions
- Stiffness KMS 2.17N/mm
 - Compliance CMS 460µm/N
 - Equivalent volume to the compliance VAS 2.04L
 - Mechanical resistance RMS 1.98N·s/m
 - Surround material Rubber
 
Dimensions
- Nominal size 2 x 7″
 - 55 x 180mm
 - Overall size 58 x 176mm
 - Baffle cutout diameter 159mm
 - Overall depth 77mm
 - Volume occupied by the driver (estimated) 0.11L
 - Frame material Polymer
 
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Export this driver to a simulation software:
Closed Box Simulator·
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SpeakerSim
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