Smooth BS 12N/250A
|Nominal Overall Diameter||320 mm||13 in|
|Nominal Voice Coil Diameter||65 mm||3 in|
|Magnet Weight||220 g||8 oz|
|Overall Weight||2.5 kg||5.51 lbs|
|Flux Density||1.14 T|
|Voice Coil Winding Depth||18 mm||0.71 in|
|Magnetic Gap Depth||10 mm||0.39 in|
|Voice Coil DC Resistance||RE||5.5 Ω|
|Resonance Frequency||ƒS||47 Hz|
|Mechanical Q Factor||QMS||12.58|
|Electrical Q Factor||QES||0.45|
|Total Q Factor||QTS||0.43|
|Mechanical Moving Mass||MMS||56.7 g|
|Mechanical Compliance||CMS||200 µm/N|
|Force Factor||BxL||14.37 Wb/m|
|Equivalent Acoustic Volume||VAS||81.3 lt.|
|Maximum Linear Displacement||XMAX||± 5.5 mm|
|Excursion Limit||XVAR||± 8.9 mm|
|Reference Efficiency||nO||1.81 %|
|Diaphragm Area||SD||530.9 cm2|
|Voice Coil Inductance @ 1kHz||LE||1 mH|
|Voice Coil Winding||Copper|
|Voice Coil Former||Fiberglass|
|Surround Material||Treated Cloth|
|Dust Dome Material||Solid Paper|
|Basket Material||Aluminum Die-Cast|
|Rated Power||250 W|
|Musical Power||500 W|
|[email protected],1m||96.4 dB|
Available in 8Ω
Smooth Sound speakers are extremely clean and round with superb headroom. Equipped with neodymium magnets and aluminium baskets, they offer great linear excursion and dynamics. They are ideal for modern styles where extended low end is required. Neodymium magnets offer a 50% reduction in weight guaranteeing very light systems. The proprietary aluminium basket was specially designed to avoid sound wave reflections on the rear side of the cone, thereby allowing for faster and better cooling of both the voice coil and the air moved by it.
The 12'' bass speaker provides a good upper mid range tone.
Rich, fat and open.
Want a more in-depth demonstration of our speakers? Try our Jensen speaker demonstration.
Having trouble playing our sound samples? Access the files directly.
Frequency Response Charts
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