Dayton Audio Reference RS225P-4A
4Ω
8ΩWoofer
| Nominal diameter | 8″ / 223 mm |
| Resonance | 37.7 Hz |
| Q factor | 0.38 |
| Sensitivity | 88.6 dB |
| Linear excursion | ± 6 mm |
| Program Power | 120 W |
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Specifications
- Sensitivity (1W, 1m, infinite baffle) SPL1W 88.6dB
- Frequency response 35 - 5500Hz
Thiele & Small parameters
- Resonance frequency (free air) fS 37.7Hz
- Mechanical quality factor QMS 1.85
- Electrical quality factor QES 0.48
- Total quality factor QTS 0.38
Large signal parameters
- Maximum linear excursion xmax 6mm
- Air volume displaced at xmax VD 128cm³
- Power handling P 80W
- Program power Pmax 120W
Voice Coil
- Nominal impedance Z 4Ω
- DC resistance RE 3.3Ω
- Inductance (1kHz) LE 0.51mH
- VC Diameter 38.5mm
Magnet
- Force factor Bl 6.4N/A
- Motor constant Bl/√RE 3.52N/√W
- Material Ferrite
Diaphragm
- Effective diameter 165mm
- Effective area SD 214cm²
- Moving mass MMS 25g
- Moving mass (without air load) MMD 22.6g
- Material Paper / Kevlar
Suspensions
- Stiffness KMS 1.41N/mm
- Compliance CMS 710µm/N
- Equivalent volume to the compliance VAS 45.8L
- Mechanical resistance RMS 3.2N·s/m
- Surround material Rubber
Dimensions
- Nominal diameter 8″
- 223mm
- Overall diameter 223mm
- Baffle cutout diameter 184mm
- Overall depth 84mm
- Volume occupied by the driver (estimated) 0.76L
- Frame material Cast Aluminium
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Export this driver to a simulation software:
Closed Box Simulator·
Speakerbench
WinISD
Basta!
Hornresp
QSpeakers
SpeakerSim
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