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The Dayton Audio PCS12-4 is a 30.48cm (12") paper cone subwoofer speaker, designed for DIY projects and multi-way systems seeking deep bass extension, high output level and easy integration. Its polypropylene-coated paper cone, combined with an inverted dust cap of the same finish, produces energetic bass while retaining a sober appearance, while the 30 Hz resonance frequency promotes an extended response in a properly designed enclosure.
With a sensitivity of 90.6 dB, an impedance of 4 Ω, a 7 mm Xmax and a power handling of 180 W RMS, it delivers significant impact without requiring oversized amplification. Its wide-roll rubber surround accompanies the movements of the cone in order to maintain controlled excursion, while the fully vented motor improves heat dissipation during extended listening sessions. Finally, its low-profile stamped steel basket simplifies installation in a dedicated enclosure or in a custom build, to effectively reinforce the bass range of an audio system.

Technical specifications
| Specifications | |
|---|---|
| Product type | Subwoofer |
| Impedance | 4Ω |
| Sensitivity | 90.6dB 2.83V/1m |
| Frequency response | 25Hz-300Hz |
| Voice coil diameter | 3.81cm (1.5") |
| Nominal diameter | 30.48cm (12") |
| Power | RMS: 180W MAX: 360W |
| Thiele-Small parameters | |
|---|---|
| Resonance frequency (Fs) | 30Hz |
| Cone surface area (Sd) | 487cm² |
| Voice coil inductance (LE) | 2.1mH |
| DC resistance (Re) | 3.5Ω |
| Mechanical quality coefficient (Qms) | 6.4 |
| Electromagnetic quality coefficient (Qes) | 0.75 |
| Total quality coefficient (Qts) | 0.67 |
| Force factor (BL) | 9.7T·m |
| Total moving mass + air load on the cone (Mms) | 106.5g |
| Mechanical compliance of suspension (Cms) | 0.26mm/N |
| Compliance equivalent volume (Vas) | 3.14ft³ |
| Max linear excursion (Xmax) | 7mm |
| Mounting informations | |
|---|---|
| Cutout diameter | 27.43cm (10.8") |
| Depth | 13.59cm (5.35") |
| Number of mounting holes | 8 |
| Total external diameter | 32.38cm (12.75") |
| Materials | |
|---|---|
| Diaphragm | Treated paper |
| Magnet | Ferrite |
| Frame | Steel |
| Surround | Rubber |
| Voice coil wire | Copper |
| General | |
|---|---|
| Weight | 3.7kg |
| Package | Sold individually |
| Speaker Power (W RMS) | 180.0 |
| Speaker Type | Subwoofer |
| Impedance (Ω) | 4 |
| Loudspeaker diameter (mm) | 304.8 |
| Diaphragm type | Paper |
| Efficiency / Sensitivity (dB) | 90.6 |
| Max Linear Excursion (Xmax) (mm) | 7.0 |
| Lowest frequency (Hz) | 25 |
| Highest frequency (Hz) | 300 |