R115 is a high-output 2-way active loudspeaker designed for portable PA systems, touring rigs, and medium-sized events. Its 15” low-frequency and 1.75” high-frequency drivers deliver powerful sound with extended lows, clear mids, and articulate highs. Powered by onboard DSP, it ensures balanced tonal response, controlled dispersion, and reliable coverage. With versatile inputs and a robust cabinet, R115 offers professional sound reinforcement in a practical, portable design.
OVERVIEW
Montarbo R115. High-Output Versatility
R115 is a professional 2-way active loudspeaker engineered for high-output portable PA, touring, and medium-sized live events. Its bass-reflex architecture combines a 15” low-frequency driver with 3” voice coil and a 1.75” HF compression driver, delivering extended low-end authority, clear midrange, and detailed high frequencies. The system reaches a maximum sound pressure level of 132 dB, ensuring intelligibility and dynamic impact across demanding performance environments.
The loudspeaker’s 90° × 40° coverage pattern provides wide horizontal dispersion with controlled vertical directivity, enabling precise audience coverage and minimizing unwanted reflections. This makes R115 ideal for mobile PA systems, front-of-house setups, stage monitoring, touring, and rehearsal spaces.
Powered by a Class D amplifier platform rated at 600 W RMS / 1200 W peak, R115 delivers responsive transient performance with ample headroom. Its passive radiator design ensures efficient low-frequency extension without the need for active cooling. Onboard DSP processing—including FIR filters, 24-bit / 48 kHz conversion, and 28/56-bit internal processing—optimizes crossover behavior, phase alignment, and overall tonal balance.
Front-panel controls offer channel-level adjustment, preset selection, input sensitivity, and LINK/MIX routing, while comprehensive connectivity—including Combo, XLR, and 1/4” inputs with XLR line output—enables flexible multi-speaker deployment and scalable system expansion.
Constructed from multilayer wood with a protective polyurea coating, the cabinet is engineered for touring durability. Measuring 427 × 705 × 428 mm and weighing 25.9 kg, R115 combines high output and extended bandwidth with reliability and practicality for professional portable and live performance use.
FEATURES
High-output 2-way active loudspeaker with extended low-frequency reach
Powerful 15” LF driver and 1.75” HF driver for dynamic, authoritative sound
Integrated DSP with FIR filtering for precise tuning and tonal balance
Flexible connectivity and LINK/MIX routing for multi-speaker setups
Touring-grade wooden cabinet with polyurea finish for robust portability
TECHNICAL SHEET
Acustical Data
Speaker Type
2-way Active bass reflex
Frequency response [-10 dB]
48 Hz – 20 kHz
Max SPL
132 dB
HF
1.75″ driver
LF
15″ – 3″ V.C.
Dispersion
90° H x 40° V
Crossover frequency
1.5 kHz
Amplifier
Amp Class
D
RMS Power
600 W
Peak Power
1200 W
Cooling
Passive radiator
DSP
Advanced functions
FIR filters
DSP
28/56 Bit
AD/DA Converter
24Bit / 48kHz
Controls
Channel level
MAIN level
PRESET
Channel 1 sensitivity
LINK/MIX output
Connectors
CH1: Combo,
CH2: XLR-F +
6.35 mm jack (1/4”)
LINE OUT: XLR-M
Enclosure
Dimensions
W x H x D
427 x 705 x 428 mm
[16.8” x 27.8” x 16.9”]
Weight
25.9 kg
[57 lb]
Cabinet
Multilayer wood with polyurea finish

APPLICATION
R115 is ideal for portable PA systems, touring bands, DJs, and medium-sized live events where high SPL, clarity, and impact are required. Its extended low-frequency response, articulate mids, and focused high frequencies make it well-suited for music playback, live performance, and speech in small-to-medium venues, rehearsal spaces, and mobile setups.
Thanks to its flexible connectivity and scalable signal routing, R115 adapts seamlessly to different configurations—from stand-mounted mobile setups to multi-speaker front-of-house arrays. Built for touring durability and reliable performance, it provides professionals with a versatile, high-output solution for demanding portable and live sound reinforcement applications.
ACCESSORIES






