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The Dayton Audio Pro Odeum 18F is a professional 45.7cm subwoofer designed for sound reinforcement systems requiring a high output level and stable bass reproduction. Its 1200W RMS power handling, ferrite motor and 4-inch voice coil allow it to reach a sensitivity of 96.4dB, while ensuring a maximum linear excursion of 10.6mm to strengthen the impact and reach of the bass.
Its ribbed paper cone favors a compromise between rigidity and lightness, while the aluminum demodulation ring reduces distortion and power compression. The ventilation located under the spider and at the rear of the perimeter improves the thermal dissipation of the voice coil, which maintains the speaker's behavior during extended use. With a frequency range of 35Hz to 1kHz and an impedance of 8Ω, the Odeum Pro 18F fits into many sound reinforcement enclosures, for the design, replacement or upgrade of a professional system.

Technical specifications
| Specifications | |
|---|---|
| Product type | Subwoofer |
| Nominal diameter | 45.7cm (18") |
| Power | RMS: 1200W Max: 2400W |
| Impedance | 8Ω |
| Frequency response | 35Hz-1kHz |
| Sensitivity | 96dB @ 2.83V/1m |
| Voice coil diameter | Ø101.6mm (4") |
| Thiele-Small parameters | |
|---|---|
| DC resistance (Re) | 6.5Ω |
| Voice coil inductance (Le) | 2.25mH @ 1kHz |
| Resonance frequency (Fs) | 32Hz |
| Mechanical quality coefficient (Qms) | 8.97 |
| Electromagnetic quality coefficient (Qes) | 0.42 |
| Total quality coefficient (Qts) | 0.40 |
| Total moving mass + air load on cone (Mms) | 193.6g |
| Mechanical compliance of suspension (Cms) | 0.13mm/N |
| Cone surface area (Sd) | 1200cm² |
| Force factor (BL) | 24.44Tm |
| Compliance equivalent volume (Vas) | 287.7 litre |
| Max linear excursion (Xmax) | 10.6mm |
| Mounting informations | |
|---|---|
| Total external diameter | 462mm (18.19") |
| Cutout diameter | 413.8mm (16.29") |
| Depth | 192.8mm (7.59") |
| Number of mounting holes | 8 |
| Materials | |
|---|---|
| Cone | Paper |
| Magnet | Ferrite |
| Frame | Aluminum |
| Voice coil wire | Copper |
| General | |
|---|---|
| Weight | 15.74kg |
| Package | 1x Dayton Audio Pro Odeum 18F |
| Speaker Power (W RMS) | 1200 |
| Speaker Type | Subwoofer |
| Impedance (Ω) | 8 |
| Loudspeaker diameter (mm) | 462.0 |
| Diaphragm type | Paper |
| Efficiency / Sensitivity (dB) | 96.0 |
| Max Linear Excursion (Xmax) (mm) | 10.6 |
| Lowest frequency (Hz) | 35 |
| Highest frequency (Hz) | 1000 |