The DSR215 from Yamaha is a professional-quality 2-way active loudspeaker, ideal for sound reinforcement applications. The rugged cabinet houses a pair of 15" ferrite cone woofers and a 2" titanium compression tweeter with a neodymium magnet, which provides maximum efficiency and low weight. Exclusive LTBD (Long Throw, Broad Dispersion) constant directivity waveguides provide a wide coverage pattern to reach a broad audience. Internal Class-D amplifiers provide 1300W of output power for a strong, distortion-free performance. XLR and 1/4" inputs let you connect a variety of mic or line level sound sources, while an XLR output lets you daisy-chain additional speakers.

Onboard DSP includes FIR-X tuning for smooth crossover transitions and 24-bit AD/DA converters for maximum dynamic range. D-CONTOUR processing provides consistent clarity and high and low output levels. Extensive protection circuitry prevents damage from DC faults, clipping, overheating, and over voltage. The speaker has a pair of integrated carrying handles for easy transport.

• Ideal for sound reinforcement applications in theaters, houses of worship, and more
• The rugged cabinet houses a pair of 15" ferrite cone woofers and a 2" titanium compression tweeter, which has a neodymium magnet for maximum efficiency and low weight. The drivers are custom-designed for premium quality
• Exclusive LTBD (Long Throw, Broad Dispersion) constant directivity waveguides provide a wide coverage pattern of 90° x 60° to reach a broad audience
• Internal Class-D amplifiers provide 1300W of output power for a strong, distortion-free performance
• PFC switching mode power supply provides clean power with minimal HF noise, ensuring maximum power output and stable operation
• XLR and 1/4" inputs let you connect a variety of mic or line level sound sources, while an XLR output lets you daisy-chain additional speakers
• Onboard DSP includes FIR-X tuning for smooth crossover transitions and linear phase response, while 24-bit AD/DA converters provide maximum dynamic range
• D-CONTOUR processing provides consistent clarity and high and low output levels. This processing can be turned on or off depending on your environment and type of sound desired
• Extensive 3-way fail-safe protection circuitry protects the amplifier modules, power supply, and drivers from DC faults, clipping, overheating, and over voltage to ensure reliable operation under the most severe conditions
• Integrated carrying handles provide easy transport

The digital crossover networks employ high-order FIR* filters that provide linear phase response. Yamaha's proprietary FIR-X tuning simultaneously optimizes frequency and phase response, while adjusting the time alignment between the HF and LF transducers. The end result is sound quality with much better clarity and imaging than is possible with typical crossovers.

All signals are precisely processed by a 48-bit internal processing (76-bit accumulator) high performance processor for optimum sound quality. The DSR Series employs high precision discrete AD and DA converters with superior S/N ratio and dynamic range. The analog signal is transmitted on dual channels, converted to digital and summed inside the processor. By using this algorithm, approximately 3dB of improvement in S/N ratio was realized.

D-CONTOUR is a multi-band dynamic processor featuring intelligent sensing. Normally a compressor is used to boost SPL, but this would effect the entire audio bandwidth resulting in a constricted feel to the sound. D-CONTOUR works by constantly monitoring the output of multiple frequency bands, feeding the data back into the intelligent sensing system. This system then calculates the optimum EQ adjustments for each frequency band, resulting in maximum SPL while maintaining musicality. These EQ adjustments are performed in a highly intelligent manner, linked directly to the auditory response of the human ear. Hence the DSR Series can continuously deliver sound that is natural, clear and powerful - regardless of volume. D-CONTOUR can be turned on or off depending on the acoustic environment and type of sound desired.

Yamaha's next-generation Class-D amplifiers deliver as much as 1300W* of power with precision damping for tight and crisp sound from compact, lightweight modules. Through the ideal combination of amplifiers, transducers and DSP, the DSR Series loudspeakers provide the highest levels of power in their class and SPL up to 138dB, while maintaining precise dynamics and sound reproduction. Efficiency is such that convection cooling is all that is necessary, eliminating the need for fans. * DSR118W: 800W

The heat sink uses super-efficient cooling fins and is integrated with the aluminum diecast rear panel. Circuit boards are installed on the back of the rear panel, with all parts including the DSP, amplifiers and power supply laid out to ensure maximum heat conductivity. With the entire structure dedicated to preventing heat buildup, the service lifetimes of all components are significantly increased. Furthermore, the internal structure is designed to achieve the highest sound quality. For example, the DSP unit is completely shielded to separate it from the amp and power supply, preventing noise interference.

The DSR Series employs a high efficiency switching-mode power supply with PFC (Power Factor Correction). PFC harmonizes the phases of the load current and power supply voltage, maximizing power output and ensuring stable operation under severe conditions. The full resonance switching method uses both voltage resonance and current resonance, creating a clean power supply waveform with minimal high frequency noise. This clean, efficient power supply enables the entire speaker system to achieve its full performance potential.

To ensure the highest possible reliability, the DSR Series employs many of the same protection functions used in our top-class TXn Series professional power amplifiers. These functions protect all aspects of the power supply, power amplifier modules and transducers so that they can operate to their full potential while ensuring reliable operation even under the most severe conditions.

Each DSR Series loudspeaker has a white LED behind the front grille. When engaged, the LED illuminates while the power is on and also indicates the onset of system limiting. In addition, the brightness varies depending on the amount of limiting, so it is easy to monitor the status of the speaker from in front of the speaker system. This makes it easier to ensure that your mixer level is optimal, so you get the best sound from your DSR.