SB15P - Self-Powered LF Extension

The L-ACOUSTICS® self-powered coaxial range offers a complete integrated system approach and has been designed to fulfill the highest audio expectations for a broad range of professionalsound reinforcement applications. This compact and versatile package combines all the benefits of onboard amplification, digital signal processing (DSP) and contemporary coaxial transducer technology. The P series both covers the needs of fixed installation by driving down the installation and system set-up costs, and simplifies the logistics for rental businesses with regard to easier storage, handling, transportation and inventory management.

As well as delivering cutting edge audio quality, the integrated amplification and DSP module offers comprehensive transducer protection, precise system drive engine and optimized onboard preset library. The presets are instantly accessible and provide the sound designer with total creative freedom for any conceivable application.

L-ACOUSTICS^® introduced the MTD115, the first coaxial loudspeaker for sound reinforcement, in 1989. Initially designed for multipurpose applications, the coaxial technology has demonstrated numerous advantages over classic two-way systems which typically suffer from interference around the crossover point resulting in lobing and uneven frequency and power response.

By superimposing HF and LF acoustic centers in a coaxial design, a virtual point source brings significantly improved radiation characteristics. This is particularly valuable in distributed sound reinforcement applications where most listeners are located off the system axis. As the sound field of coaxial enclosures is stable over the entire frequency spectrum and in all directions, all listeners benefit from an even sonic performance within the enclosure beamwidth.

The particular benefits of coaxial technology are related to the radiation characteristics of a point source. The natural studio monitor sound quality and the aural sensation of transparent sound typical of coaxial systems is adapted to proximity applications such as stage monitoring, front-fills, under-balcony fills and FOH live monitoring.

The point source technology is also suited to distributed applications in semi-reverberant spaces where a single reflected source offers a more coherent radiation field with less reflected virtual sources than a dual acoustic source typical of horn-woofer combinations.

All coaxial systems are available as plug and play solutions with built-in amplification and DSP (P series) or amplified controllers available with a complete set of dedicated preset libraries for FOH, fill and monitor modes. This integrated package offers the user a fast and easy set-up and
ensures performance consistency, predictability and the best possible component protection.

• 40 Hz

• 131 dB

• LF: 1 x 15’’ weather-resistant transducer, 4’’ coil

• Input stage: balanced input, max level for 0 dB setting: + 12 dBu
• DSP: 24 bit/48k Hz
• Amplifier power rating: 1 x 1000 W (8 ohms)

• H x W x D: 440 x 520 x 520 mm - 17.3 x 20.5 x 20.5 in
• Weight (net): 36 kg - 79.4 lb
• Connectors: 2 x XLR in parallel, 2 x Powercon® 120 or 230 V selectable by switch
• Material: 18 mm and 24 mm Baltic birch plywood
• Finish: grayish-brown RAL 8019^®
• Front: sandblast-coated steel grill, acoustically transparent ‘‘Airnet’’ black cloth
• Rigging: integrated handles and pole mount socket, safety bolt insert, optional ETR15P adjustable bracket

• Multi-purpose, self-powered 2 way enclosure, 50 - 20k Hz
• 1 x 12’’ LF transducer + 1 x 3’’ HF compression driver
• 90° Axi-symmetric directivity
• Amplifier DSP 24 bit/48 kHz, 1 x 1000 W

• Self-powered, active 2 way live monitoring enclosure 55 - 22k Hz
• 11 x 8’’ LF transducer + 1 x 1.5’’ HF diaphragm compression driver
• 100° Axi-symmetric directivity
• Amplifier/DSP 24 bit/48 kHz, 1 x 500 W (LF), 1 x 250 W (HF)

• Self-powered compact subwoofer, LF limit 40 Hz
• 1 x 15’’ LF transducer
• Amplifier DSP 24 bit/48 kHz, 1 x 1000 W

• Rigging brackets with 10° angular increments for 115XT HiQ, 12XT and 8XT

• 1 850 seats
• 4 SB15P

• 400 seats
• 108P & SB15P

• 3 108P & 1 SB15P