B115 is a versatile, portable full range active speaker suitable for applications in medium to large venues. The bass-reflex cabinet is equipped with a 15” woofer and a 1.35 ”compression driver boosted by a 1200 W Class D amp module. B series’ advanced DSP featuring FIR filters allows a smooth audio performance as well as an impressive dimension/sound pressure level up to 130 dB.

B series speakers feature 3 input channels (Mic/line, Line, Bluetooth) with independent levels. Bluetooth devices can be easily connected thanks to the on-board “PAIR” button. Moreover, 4 different on-board presets allows users to optimize the audio performance for the application in use.

A clean design integrates 3 handles and rigging points for fixed installation to the lightweight polypropylene cabinet which also allows horizontal stage monitor use,thanks to a 40° inclination of 2 sides of the box (a dedicated preset wedge EQ is selectable on board). The flange for pole fixing on the bottom of the box allows users to choose a 0° or a 7.5° inclination of the cabinet placed on a standard 35 mm tripod

Covers for transport and weather protection are available as accessories for every model in Montarbo B series.


System type Two way bass reflex
MAX SPL 130 dB
Frequency Response (-10dB) 50Hz-20KHz
HF 1.35” (34mm) driver
LF 15” – 2.5” V.C (65mm)
Coverage (H x V) 90° H x 60° V
Crossover frequency 1.8 kHz
Amplifier class D
RMS Power 600 W
Peak Power 1200 W
Cooling Fan
Advanced Functions FIR Filters
DSP 28/56 Bit
Bluetooth® 5.0 (stereo)
Connectors I/O CH1: Combo CH2: XLR-F + jack 6,35mm (1/4”) AUX IN: mini-jack 3,5mm LINE OUT: XLR-M
Controls Ch. levels, MAIN level, PRESET button, Channel sens. LINK/MIX selection
Cabinet Polypropilene
Dimensions 430 x 725 x 405 mm (16.9” x 28.5” x 15.9”)
Weight 21.6 kg (47.62 lb)
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