B-Line 18″

The golden mean

The B 18 comprises a single 18″ 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.


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! The B 18A is driven by a mighty 1,600 W (peak) Class-D amplifier. 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.
B 15A FS

Products of the 18'' - Series

B 18
B 18A
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B 15 SFi

B18 SFi M

Stacking frame for mounting the M-F3A PRO on top of a B 18 subwoofer
B 15 SFi

B18 SFi L35

Stacking frame for mounting the L 35 on top of a B 18 subwoofer

B18 TC

Transport Cover for B 18 subwoofer

B15 Dollyboard

B18 TD

Dolly-Board for B 18 subwoofer


B15 Drawing

Model:B 18B18A
Frequency range (-3dB) *:37 Hz – 130 Hz34 Hz – 210 Hz
Frequency range (-6dB) *:29 Hz – 160 Hz28 Hz – 260 Hz
Coverage angles (-6dB) [H x V]:OmnidirectionalOmnidirectional
Nominal impedance:8 Ω8 Ω
Sensitivity **:98 dB0 dB
Peak power:2400 W1600 W
Continuous power ***:600 W
Maximum Peak SPL ****:138 dB138 dB
System type:1-way passive system1-way self-powered system
Transducers:1 x 18″ driver1 x 18″ driver
Enclosure type:Vented boxVented 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
Wiring:Pins 1+/1- : driver
Pins 2+/2- : link (Output CH 2, pins 1+/1-)
Pin N: Neutral
Pin L: Conductor
Pin E: Ground
Product dimensions [H x W x D] (Including rigging):572 x 542 x 797 mm572 x 542 x 797 mm
Net weight:41 kg45 kg
Packaging dimensions [H x W x D]:721 x 615 x 885 mm721 x 615 x 885 mm
Total weight:49.5 kg53 kg
Cabinet:15 – 18 mm plywood15 – 18 mm plywood
Cabinet finishing:Black or white polyurea coatingBlack or white polyurea coating
Grille:Powder coated perforated steelPowder coated perforated steel
Hardware2 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
Stacking:Two-point SE Audiotechnik® stacking systemTwo-point SE Audiotechnik® stacking system
Stacking frame for L35:B18 SFi L35B18 SFi L35
Transport dolly:B18 TDB18 TD
Transport cover:B18 TCB18 TC
Amplifier rain cover: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


B-Line Manual English

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B 18 Data Sheet English

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B18A Data Sheet English

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EU Declaration of Conformity – Passive Loudspeakers

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EU Declaration of Conformity – Self-Powered Loudspeakers

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EU Declaration of Conformity – Rigging and Accessories

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