**DISCOUNT INFO** We are on holiday until 27th May ** sale discounts available** please click the info link for details.

**DISCOUNT INFO** We are on holiday until 27th May ** sale discounts available** please click the info link for details.



Accuton S280-18-282 Sandwich Bass Unit

11 inch 18 ohm Ceramic Sandwich Bass Unit. Neodymium magnet.

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The Accuton S280-18-282 is an esoteric 11 inch (280mm) bass drive unit primarily intended for large 3 way floor standing designs and studio monitors of the highest quality.

This high end driver features an ultra stiff ceramic sandwich cone with a soft rubber long throw surround. The large Neodymium magnet and 55mm titanium former yield very low distortion levels. The unique multi spoke chassis design offers incredible rigidity whilst maximising airflow around the rear of the diaphragm.

The spider, pole and voice coil former are fully ventilated for minimal compression. This driver has a substantial power rating of 150 watts and with a peak excursion of 12mm offers effortless and highly accurate bass reproduction.

With an impedance of 18 Ohms this driver is ideal for tube amps or for a parallel bass array.
Full datasheets can be downloaded from the bottom of this page.

Here are some box alignment examples:


Vb: 62L, Port diameter: 70mm, Length: 240mm, Fres: 25Hz, F-3dB: 38Hz, Q: 0.58 (optimal)

Vb: 91L, Port diameter: 70mm, Length: 90mm, Fres: 29.5Hz, F-3dB: 31Hz, Q: 0.50 (extended bass)

Vb: 54L, Port diameter: 70mm, Length: 170mm, Fres: 31Hz, F-3dB: 39Hz, Q: 0.61 (0.7dB Ripple @ 50Hz)

Infinite baffle:

Vb: 39L, -5dB @ 40Hz, -17dB @ 20Hz, F-3dB: 50Hz, Q: 0.71 (typical)

Vb: 101L, -5dB @ 40Hz, -13dB @ 20Hz, F-3dB: 51Hz, Q: 0.50 (extended bass)

A matching passive radiator is available : Accuton P280

Key Features:

  • Ultra rigid ceramic sandwich cone (Corundum / Sapphire)
  • 280mm multi spoke chassis with protective grille
  • High power 55mm voice coil assembly
  • Underhung motor, titanium VC former
  • 25 Hz - 600 Hz in vented box
  • Large Neodymium magnet
  • Long throw max. 12mm

Basic Parameters:

    Resonant frequency (fs) 20Hz DC resistance (Re) 18.5Ω
    Mechanical  Q factor (Qms) 6.74 Power handling 150W
    Electrical Q factor (Qes) 0.27 Sensitivity (2.83V/1m) 88.5dB
    Total Q factor (Qts) 0.26 Chassis diameter 280mm
    Equivalent volume (Vas) 226L Cutout diameter 252mm

    Click icons to download :

    .pdf iconData              .pdf icon3D View (large file)                                                                          

    .pdf iconDimensions

    Built to order - contact us for a lead time.

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