Smooth BS 12N/250A

Smooth BS 12N/250A

General Characteristics
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
Thiele-Small Parameters
Nominal Impedance
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
Constructive Characteristics
Magnet Neodymium
Voice Coil Winding Copper
Voice Coil Former Fiberglass
Cone Material Paper
Surround Material Treated Cloth
Dust Dome Material Solid Paper
Basket Material Aluminum Die-Cast
Surround Treatment Yes
Electrical Characteristics
Nominal Impedance
Rated Power 250 W
Musical Power 500 W
Sensitivity@1W,1m 96.4 dB
BS12N250A
12",
250 watts
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.

Lows
Fat
Mids
Subdued
Highs
Subtle
Bassist Description
Rich, fat and open.
Specification Sheet
Product Dimensions
Note: all dimensions are in mm.