B-Line 15″

The space miracle

The B 15 comprises a single 15″ driver mounted in a vented box, with a sophisticated adaptive port that optimises the airflow and improves its response. This technology, developed through exhaustive research, enables a lower cut-off frequency while having smaller volume. This translates into deeper and dynamic bass from a compact enclosure. In addition to the speakON® connectors on the back, the subwoofer includes two additional located on the front. This guarantees wiring flexibility and ease of use, reducing setup time even in large configurations. Finally, the set of accessories specially designed for the B-Line, makes their setup and transportation easier, safer and more comfortable.

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Features

The great advantage of powered speakers is the built in amplifier. So there is no need for an external device – the internal amp is optimally matched to the woofer! In the B 15A and the B 15A FS, an 800 W (peak) Class-D amplifier is at work. Integrated DSP presets allow loading of preset system setups that are optimally matched to SE AUDIOTECHNIK products. Thus, the entire system is quickly and easily set up and perfectly adjusted. The directivity can be effortlessly changed in a flash from normal to cardioid or end-fire configuration via the large display and the push/rotary controller. Parameters such as EQ, Delay, Sensitivity and Phase can be adjusted and stored in your own User Presets.

If there is no room for floor subwoofers in front of or under the stage, but low frequencies need to be reproduced cleanly and powerfully, then you have to fly the sub. That’s why we’ve given the B 15A a flying harness, making the B 15A FS the most versatile model of the B-Line. Like the B 15A, it can be operated on the ground or in a stack, but can also be flown by means of a quick and easy-to-attach flying grid. From 34 Hz upwards, the flying subwoofer provides support from lofty heights with rich bass, if required. The B 15A FS delivers 133 dB max SPL and is impressively powered by an 800 W (peak) Class-D amp with a wide range of adjustment options.

Products of the 15'' - Series

B 15

B 15A

B 15 FS

B 15A FS

B15 SFi M

Stacking frame for mounting the M-F3A PRO on top of a B 15 or B 15 A subwoofer

B15 SFi L35

Stacking frame for mounting the L 35 on top of any B 15 or B 15A subwoofer

SPS 20

M20 Pole support to pole mount an M-F3A or M-F3A PRO on any B-Line subwoofer.

B 15 TD

Dolly board for B 15 or B 15A subwoofer

Specifications

Model:	B 15	B 15A	B 15 FS	B 15A FS
ACOUSTICAL
Frequency range (-3dB) *:	39 Hz – 130 Hz	40 Hz – 220 Hz		42 Hz – 220 Hz
Frequency range (-6dB) *:	33 Hz – 160 Hz	33 Hz – 260 Hz		33 Hz – 260 Hz
Coverage angles (-6dB) [H x V]:	Omnidirectional	Omnidirectional	Omnidirectional	Omnidirectional
Nominal impedance:	8 Ω	8 Ω	8 Ω	8 Ω
Sensitivity **:	92 dB	+14 dBu (3.88 V) +4 dBu (1.23 V) 0 dBu (0.775 V) 0 dBV (1 V) -10 dBV (0.316 V)		+14 dBu (3.88 V) +4 dBu (1.23 V) 0 dBu (0.775 V) 0 dBV (1 V) -10 dBV (0.316 V)
Peak power:	1600 W	800 W		800 W
Continuous power ***:	500 W
Maximum Peak SPL ****:	136 dB	136 dB		136 dB
System type:	1-way passive system	1-way self-powered system	1-way passive system	1-way self-powered system
Transducers:	1 x 15″ driver	1 x 15″ driver	1 x 15″ driver	1 x 15″ driver
Enclosure type:	Vented box	Vented box	Vented box	Vented box
Connectors:	Input / Link signal: 4 Neutrik speakON® NL4 Link output: 1 Neutrik speakON® NL4	Input signal: balanced XLR 3-pin female Link output: balanced XLR 3-pin male Power input: powerCON® 20A Power link output: powerCON® 20A	Input / Link signal: 4 Neutrik speakON® NL4 Link output: 1 Neutrik speakON® NL4	Input signal: balanced XLR 3-pin female Link output: balanced XLR 3-pin male Power input: powerCON® 20A Power link output: powerCON® 20A
Wiring:	Pins 1+/1- : driver Pins 2+/2- : link (Output CH 2, pins 1+/1-)	Pin N: Neutral Pin L: Conductor Pin E: Ground	Pins 1+/1- : driver Pins 2+/2- : link (Output CH 2, pins 1+/1-)	Pin N: Neutral Pin L: Conductor Pin E: Ground
MECHANICAL
Product dimensions [H x W x D] (Including rigging):	514 x 494 x 650 mm	520 x 495 x 654 mm		520 x 495 x 654 mm
Net weight:	30 kg	37.1 kg		37.1 kg
Packaging dimensions [H x W x D]:	613 x 550 x 733 mm	613 x 550 x 733 mm		613 x 550 x 733 mm
Total weight:	33.1 kg	37.1 kg		37.1 kg
Cabinet:	15 – 18 mm plywood	15 – 18 mm plywood	15 – 18 mm plywood	15 – 18 mm plywood
Cabinet finishing:	Black or white polyurea coating	Black or white polyurea coating	Black or white polyurea coating	Black or white polyurea coating
Grille:	Powder coated perforated steel	Powder coated perforated steel	Powder coated perforated steel	Powder coated perforated steel
Hardware	– 4 rubber feet and top recesses for stacking – M20 pole thread – 2 SE Audiotechnik® ergonomic handles	– 4 rubber feet and top recesses for stacking – M20 pole thread – 2 SE Audiotechnik® ergonomic handles	– 4 rubber feet and top recesses for stacking – M20 pole thread – 2 SE Audiotechnik® ergonomic handles	– 4 rubber feet and top recesses for stacking – M20 pole thread – 2 SE Audiotechnik® ergonomic handles
Stacking:	Two-point SE Audiotechnik® stacking system	Two-point SE Audiotechnik® stacking system	Four-point SE Audiotechnik® rigging system	Four-point SE Audiotechnik® rigging system
ACCESSORIES
Stacking frame for M-F3A PRO:	B15 SFi M	B15 SFi M	B15 SFi M	B15 SFi M
Stacking frame for L35:	B15 SFi L35	B15 SFi L35	B15 SFi L35	B15 SFi L35
Pole bar:	SPS20	SPS20	SPS20	SPS20
Transport dolly:	B15 TD	B15 TD	B15 TD	B15 TD
Transport cover:	B15 TC	B15 TC	B15 TC	B15 TC
Amplifier rain cover:		P801DL RC		P801DL RC
_{All product specifications are subject to change without prior notice.}	_{* Measured with a 6th-order Butterworth low-pass filter applied at 130 Hz}	_{** Half space, 1W / 1m, on axis}	_{*** According to EIA-426B Standard (based on RMS Voltage}	_{**** Max Peak SPL = Sensitivity + 10log10(Continuous Power) + 12 dB Crest Factor}