Amplifiers

AV Integrated Systems Magazine introduces ‘Product of the month’. Each month, the magazine will highlight one link (read product) from the Audiovisual integration chain and this issue’s selection is “Amplifiers”.

Choosing the right amplifier for your specific needs may get complicated. Manufacturers are introducing various series of models with features, which include, varying output power capabilities, low latency, flexible in/out connectivity etc. thereby accommodating a wide range of installation environments. This list, which is intended to be a guide, highlights six such models, but does not endorse any product.

Dynacord - IPX10:4

IPX series are dedicated amplifiers for fixed install application such as e.g. stadiums, arenas, houses of worship, concert halls, theaters and other applications that require high‑power multichannel amplifiers with sophisticated speaker processing. Dynacord’s IPX 10:4 uses high efficiency Eco Rail technology for lower operating costs. The integrated DSP can run either in 48 kHz or true 96 kHz including FIR-Drive. Besides analog inputs also Dante and OCA via OMNEO network inputs are available. Comprehensive fallback options allow redundant scenarios. Each channel can be individually operated in low impedance mode or 70V/100V Direct Drive mode. By bridging also 140V/200V Direct Drive is available. By the possibility to parallel two channels and parallel‑bridge four channels, all kind of loudspeakers can be driven. Due to the digitally controlled interleaved PFC supply reliable operation is ensured even under challenging mains supply situations. Reactive current is limited to a minimum, which reduces costs for mains installations and mains fusing in the installation. In the case of idle mode or light mode operation, IPX series amplifiers automatically switch to a lower Eco Rail further reducing operating costs. In Eco Mode, the amplifiers stay fully functional and supervised. While IPX series amplifiers are fully integrated into IRIS‑Net, an OLED display on the front panel allows quick local control and supervision of the amplifier. The connectivity of IPX series amplifiers is optimized for fixed install applications.

Extron - XPA

Extron has introduced the XPA Ultra line of power amplifiers, an engineering breakthrough that provides the ability to put more amplifier channels in a smaller space, with less radiated heat, than ever before. All XPA Ultra amplifiers run cooler than other Class D amplifiers, extending component life and eliminating the need for ventilation rack space. The XPA Ultra lineup includes a new and improved ultra-fast wake up from standby to ensure the beginning of audio is not cut off. An everlasting power supply, professional grade signal-to-noise ratio, ultra-low inrush current, and our patented CDRS - Class D Ripple Suppression, are also part of the Extron technology found inside every XPA Ultra amplifier. These ENERGY STAR qualified amplifiers deliver 35 watts or 100 watts per channel into 8 and 4 ohms or 70 volt systems. The XPA Ultra lineup of UL 2043 plenum rated amplifiers include single and side by side rack mount hardware and a newly designed rear panel that makes installing the optional Flexible Conduit Adapter Kit easier than ever. Recessed, detente level controls with laser etched markings provide enhanced visibility and repeatability of settings.

Crestron - AMP-8150

Crestron Avia AMP-8000 series amplifiers are designed to complement the Avia family of digital signal processors and are well-suited for all types of commercial audio applications. Each model furnishes eight channels of clean, efficient amplification in a space-saving 1 RU rack-mountable chassis. Each channel is configurable for Lo-Z or Hi-Z operation, as well as stereo and bridged modes. Network connectivity enables configuration, monitoring, and control via the Avia Audio Tool software, a Crestron control system, or Crestron Fusion. The advanced Class D technology maximizes efficiency to reduce power consumption and heat dissipation. An internal universal power supply with power factor correction ensures consistent performance with varying line voltages. The AMP-8150 model delivers 150 watts per channel into 4 or 8-ohm “Lo Z” loads. Each channel is individually configurable via software for use with “Hi-Z” distributed speaker systems. Adjacent pairs of channels may be configured for stereo or bridged operation. Stereo mode enables remote control of a stereo pair of speakers using a single set of controls. The bridged mode allows two channels to be combined to provide a single channel delivering 300 watts into 8 ohms. Two versions of the AMP-8150 are offered. The namesake AMP-8150 model supports 4/8 ohm and 70V output and operates on 100-120V AC line power. The “international” AMPI-8150 model supports 4/8 ohm and 100V output and operates on 220-240V AC line power. Both models feature professionally balanced inputs and support input signal levels up to +24 dBu. Rear panel input attenuation controls allow for signal level matching. Remote level control and monitoring is enabled using the Avia Audio Tool software or using a touchscreen control panel or mobile device through integration with a Crestron control system. Integration with a control system also enables centralized monitoring and control of multiple amplifiers throughout a facility as part of a Crestron Fusion managed the enterprise.

Yamaha - MA/MP Series

With quick, easy setup and intuitive operation, the compact MA and PA series power amplifiers are ideal audio solutions for retail stores, eateries, classrooms or public facilities like hospitals. The compact amplifier series make it easy to bring commercial spaces to life. The MA2120 and PA2120 meet the demands of a wide range of applications requiring higher power as well as more flexible DSP functionality and zone control. All models combine approachable, unobtrusive design with efficient, flexible performance. The MA2030a and MA2120 offer mixing capability with source EQ (Bass/Treble) control, as well as some of the same state-of-the-art DSP technologies that are acclaimed features of professional Yamaha audio gear. Whether providing background music for a café or restaurant or powering a conference room or other application requiring microphone input, the MA/PA series amplifiers are simple yet powerful tools that can help establish an ideal commercial sound environment. The device possesses simple, user-friendly interface with stereo and microphone inputs (MA series). The DSP functions can be optimized for background music (MA series) and is switchable for low (3/4/8 Ω) and high (70/100 V) impedance in the speaker systems. The stereo source EQ with enhancer function (MA series) provides optimum performance with Yamaha VXC/VXS series speakers.

Powersoft - Quattrocanali Series

The Quattrocanali Series from powersoft is designed for installation applications. In just 1 RU, Quattrocanali offers smaller dimensions, lighter weight, and the traditionally amazing sound quality and reliability of all Powersoft products. Quattrocanali Series amplifiers implement a high efficiency microprocessor controlled power supply with built-in PFC (Power Factor Correction) that allows flawless worldwide operation with any AC mains voltage in the range 85-275 VAC tolerant to peak up to 400 V. The patented SRM (Smart Rails Management) technology allows maximizing the efficiency of the system and drastically reduces power consumption at any load and usage condition. A secondary high efficient power supply is present to keep the system responsive at any operating condition, so that system check and monitoring can be performed even in standby and deepsleep modes. Quattrocanali Series is designed to work with lo-Z (from 2 ohms) and with 70V/100V distributed lines: any mixed configuration of low and high impedance output loads can be realized, making the Quattrocanali Series suitable to all application in installed sound reinforcement system. DSP+D versions of the Quattrocanali series extend system performance with the support of Dante digital audio networking architecture and the onboard high-end signal processing.

Bose - PowerShare PS604A

Bose PowerShare PS604A adaptable power amplifier is an ideal installation for performing arts venues, houses of worships, conference centers, retail stores, hospitality venues, and more. Through patented technology, total amplifier power is shared across all output channels, allowing installers the freedom to utilize power where needed. With support for both low and high-impedance loads up to 100V, PowerShare amplifiers adapt to a wide range of applications. Onboard configurable loudspeaker processing and direct access to zone controllers eliminates the need for an additional signal processor in many installations, while quality audio performance and reliability are assured with patented technologies inherited from PowerMatch line. With the inclusion of AmpLink, up to 24 digital audio channels can be sent to the amp from a Bose DSP via a shielded CAT 5 cable. The PowerShare technology allows the total 600 watts of power to be shared asymmetrically across all outputs, as each output is capable of delivering full power. Load-Independent Outputs of Each channel can be configured for low-impedance (4-8 Ω) or high-impedance (70/100V) applications without bridging, use of jumpers, or software settings. The Dual Feedback Loop system, inherited from the field-proven Bose PowerMatch amplifier line, improves performance and reliability through continuous monitoring and control of both the current and voltage delivered to each output load. This combination provides improved linearity and lower distortion, while protecting loudspeakers. Integrated Loudspeaker Processing with optional PowerShare Editor configuration for applications requiring additional signal processing the PowerShare Editor Software offers real-time selection and control of Bose loudspeaker EQs, 9-band PEQs, matrix mixing, crossover, delay, and mute/output polarity through a USB connection. AmpLink transports up to 24 uncompressed, near zero latency, digital audio channels between Bose DSPs and the PowerShare PS604A via shielded CAT 5 cable and also supports a THRU path for daisychaining up to 8 other Bose AmpLink amplifiers, at a distance of up to 10 m between products. The ControlCenter Zone Controller Accessories, the CC-1 zone controllers, can be directly attached for remote adjustment of amplifier outputs. PowerShare amplifiers can be configured to automatically enter standby mode when the audio signal falls below a set threshold, then wake when audio returns.