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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 | |
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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 | |
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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 | |
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Cone | Coated paper |
Surrounf | Rubber |
Voice coil wire | Copper |
Voice coil former | Aluminum |
Frame | Steel |
Magnet | Ferrite |
Mounting informations | |
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External diameter | Ø260mm |
Cutout diameter | Ø227mm |
Depth | 109mm |
Bolt circle diameter | - |
Number of mounting holes | 5 |
Taille de caisse optimale | |
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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 |