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This standard Dayton Audio DCS305-4 subwoofer is ideal as a replacement for an HS subwoofer of the same size or for creating a subwoofer.
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Subwoofer 4Ω ⌀30.5cm 250W RMS

The DCS305-4 is a standard subwoofer speaker that will be suitable for most systems, replacing an HS subwoofer of the same size or simply for creating a new subwoofer. For maximum versatility, this speaker has been designed to be suitable for both open and closed speakers. The very robust diaphragm and the large suspensions ensure a high linear excursion for excellent performance in low frequencies.
| Specifications | |
|---|---|
| Speaker type | Subwoofer |
| Nominal diameter | 30.48cm (12") |
| Diaphragm material | Paper / Kevlar |
| Magnet material | Ferrite |
| Voice coil wire material | Copper |
| Overall outside diameter | 306mm |
| Depth | 153mm |
| Power handling | RMS : 250W MAX : 500W |
| Impedance | 4Ω |
| Sensitivity | 90.5dB @ 2.83VW/1m |
| Frequency response | 23Hz - 200Hz |
| DC Resistance (Re) | 3.3Ω |
| Voice coil inductance (Le) | 2.06mH @ 1kHz |
| Resonant frequency (Fs) | 24.2Hz |
| Mechanical Q (Qms) | 5.07 |
| Electromagnetic Q (Qes) | 0.43 |
| Total Q (Qts) | 0.40 |
| Diaphragm Mass Inc. Airload (Mms) | 160g |
| Mechanical compliance of suspension (Cms) | 0.27 mm/N |
| Surface area of cone (Sd) | 498.8cm² |
| Volume of displacement (Vd) | 468.8cm² |
| Maximum linear excursion (Xmax) | 9.3mm |

| Sealed Volume | 32.28 Litres |
| Sealed F3 | 48 Hz |
| Vented Volume | 96.84 Litres |
| Vented F3 | 26 Hz |
| Speaker Power (W RMS) | 250.0 |
| Speaker Type | Subwoofer |
| Impedance (Ω) | 4 |
| Loudspeaker diameter (mm) | 305.0 |
| Diaphragm type | Kevlar |
| Diaphragm type | Carbon kevlar |
| Efficiency / Sensitivity (dB) | 90.0 |
| Max Linear Excursion (Xmax) (mm) | 8.4 |
| Lowest frequency (Hz) | 23 |
| Highest frequency (Hz) | 200 |