Smooth BS 12N/250A | Jensen Loudspeakers

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		8Ω
Voice Coil DC Resistance	R_E	5.5 Ω
Resonance Frequency	ƒ_S	47 Hz
Mechanical Q Factor	Q_MS	12.58
Electrical Q Factor	Q_ES	0.45
Total Q Factor	Q_TS	0.43
Mechanical Moving Mass	M_MS	56.7 g
Mechanical Compliance	C_MS	200 µm/N
Force Factor	BxL	14.37 Wb/m
Equivalent Acoustic Volume	V_AS	81.3 lt.
Maximum Linear Displacement	X_MAX	± 5.5 mm
Excursion Limit	X_VAR	± 8.9 mm
Reference Efficiency	n_O	1.81 %
Diaphragm Area	S_D	530.9 cm²
Voice Coil Inductance @ 1kHz	L_E	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		8Ω
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.

Sound Samples