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The Dayton Audio SD270A-88 is one of the best subwoofers available today in this price range. The brand's DVC range has been designed to offer the best possible value for money. This loudspeaker features a polyethylene-coated paper diaphragm, wide rubber suspension, large 8 Ohm dual voice coils, vented pole pieces and a dented bowl. The extremely meticulous design of this model makes it an excellent choice for the creation of an economical, high-performance subwoofer.
Technical characteristics
| Specifications | |
|---|---|
| Speaker driver type | Subwoofer |
| Nominal diameter | Ø254mm (10") |
| Power handling | RMS : 80W Max : 160W |
| Impedance | 4Ω |
| Frequency response | 26Hz - 2500Hz |
| Sensitivity | 87.8dB @ 1W/1m |
| Voice coil diameter | Ø38.1mm |
| Weight | 2.81kg |
| Total external dimensions | Ø260 x 109mm |
| Magnet weight | - |
| Thiele-Small parameters | |
|---|---|
| Resonant frequency (fS) | 26.2Hz |
| DC Resistance (RE) | 3.16Ω |
| Voice coil inductance (LE) | 1.12mH |
| Mechanical quality factor (QMS) | 3.23 |
| Electromagnetic quality factor (QES) | 0.5 |
| Total quality factor (QTS) | 0.43 |
| Compliance equivalent volume (VAS) | 107.6L |
| Mechanical compliance of suspension (CMS) | 0.64mm/N |
| Force factor (B·l) | 7.8T·m |
| Mechanical resistance (RMS) | - |
| Diaphragm mass inc. airload (MMS) | 57.7g |
| Moving mass (MMD) | - |
| Max linear excursion(XMAX) | 6mm |
| Displaced air volume at Xmax (VD) | - |
| Efficiencty (η₀) | - |
| Bandwidth efficiency (EBP) | - |
| Surface area of cone (SD) | 346.4cm² |
| Materials | |
|---|---|
| Cone | Coated paper |
| Surrounf | Rubber |
| Voice coil wire | Copper |
| Voice coil former | Aluminum |
| Frame | Steel |
| Magnet | Ferrite |
| Mounting informations | |
|---|---|
| External diameter | Ø260mm |
| Cutout diameter | Ø227mm |
| Depth | 109mm |
| Bolt circle diameter | - |
| Number of mounting holes | 5 |
| Taille de caisse optimale | |
|---|---|
| Sealed volume | 28.32L (1ft³) |
| Sealed F3 | 50Hz |
| Vented volume | 49.55L (1.75ft³) |
| Vented F3 | 34Hz |
| Speaker Power (W RMS) | 80.0 |
| Speaker Type | Subwoofer |
| Impedance (Ω) | 4 |
| Loudspeaker diameter (mm) | 254.0 |
| Diaphragm type | Paper |
| Efficiency / Sensitivity (dB) | 88.0 |
| Max Linear Excursion (Xmax) (mm) | 6.0 |
| Lowest frequency (Hz) | 26 |
| Highest frequency (Hz) | 2000 |