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DAYTON AUDIO RS225P-4A Speaker Driver Woofer Paper 80W 4Ω 93dB 35Hz - 5500Hz Ø20.3cm
Dayton Audio RS225P-4A
Speaker Driver Woofer Paper 80W 4Ω 93dB 35Hz - 5500Hz Ø20.3cm
Dayton Audio's Reference Series paper-diaphragm drivers combine state-of-the-art distortion performance. They also offer a more linear frequency response and smoother high-frequency attenuation, allowing for extended bandwidth and easier crossover integration.
The diaphragm of this RS225P-4A loudspeaker benefits from a special design, combining natural pulp, synthetic Kevlar and fiberglass to create an advanced non-woven fiber composite, offering the perfect combination for a smooth, natural and detailed sound reproduction.
Technical characteristics
| Specifications | |
|---|---|
| Speaker driver type | Woofer |
| Nominal diameter | Ø203mm (8") |
| Power | RMS : 80W Max : 120W |
| Impedance | 4Ω |
| Frequency response | 35Hz - 5500Hz |
| Sensitivity | 92.9dB @ 2.83V/1m |
| Voice coil diameter | Ø38.6mm (1.52") |
| Weight | 2.72kg |
| Thiele-Small Parameters | |
|---|---|
| Resonant frequency (Fs) | 37.7Hz |
| DC Resistance (Re) | 3.3Ω |
| Voice coil inductance (Le) | 0.51mH |
| Mechanical quality coefficient (Qms) | 1.85 |
| Electromagnetic quality coefficient (Qes) | 0.48 |
| Total quality coefficient (Qts) | 0.38 |
| Compliance equivalent volume (Vas) | 45.8L |
| Mechanical compliance of suspension (Cms) | 0.71mm/N |
| Force factor (BL) | 6.4Tm |
| Moving mass of diaphragm (Mmd) | 25g |
| Maximum linear excursion (Xmax) | 6mm |
| Surface area of cone (Sd) | 213.8cm² |
| Materials | |
|---|---|
| Cone material | Paper / Kevlar |
| Surround material | Rubber |
| Frame material | Cast Aluminum |
| Magnet material | Ferrite |
| Mounting informations | |
|---|---|
| Total external diameter | Ø223mm (8.78") |
| Cutout diameter | Ø183.9mm (7.24") |
| Depth | 88.9mm (3.5") |
| Bolt circle diameter | 209mm (8.23") |
| Number of mounting hols | 6 |
| optimum cabinet size (Measured with BassBox 6 Pro High Fidelity) | |
|---|---|
| Sealed volume | 12.743L (0.45ft.³) |
| Sealed F3 | 83Hz |
| Vented volume | 27.467L (0.97ft.³) |
| Vented F3 | 49Hz |
| Speaker Power (W RMS) | 80.0 |
| Speaker Type | Woofer |
| Impedance (Ω) | 4 |
| Loudspeaker diameter (mm) | 203.0 |
| Diaphragm type | Paper |
| Diaphragm type | Kevlar |
| Efficiency / Sensitivity (dB) | 93.0 |
| Max Linear Excursion (Xmax) (mm) | 6.0 |
| Lowest frequency (Hz) | 35 |
| Highest frequency (Hz) | 5500 |
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