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Power Amplifiers

Apr 2, 2013 12:10 PM, By Mike McIntyre


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There was a time when power amplifiers were measured by weight, meaning bigger and heavier indicated more power; a time when 1,000W amplifiers were nearly impossible because of the amount of power it would take to make them work. Well, those days are over. Power is getting smarter, lighter, and more efficient every day. If your go-to amplifiers don’t include some of the new breed of power mentioned below, you owe it to your clients to take a look.

Ashly Audio ne series

Ashly Audio ne series

Ashly Audio’s Networkable-enabled amplifiers (ne series) allow instant access to a power amplifier or a rack of power amplifiers from anywhere in the world. With different configurations such as: CobraNet, digital inputs and outputs, or microphone pre inputs (multichannels only). Users may also add the Protea digital processor to the power amplifier platform. Ashly’s ne series power amplifiers are engineered with an energy-efficient switching power supply mated to a Class D amplifier design.

Pêma is a Protea-equipped matrix amplifier from Ashly, either 4-channel or 8-channel at 250W or 125W per channel. Pêma is a matrix mixer. All Pêma models have a full 8-in by 8-out matrix mixer, where any input can be assigned to any output or outputs. Pêma is a digital signal processor. In addition to the full Protea suite of DSP settings, there are four new features to Pêma—gain-sharing automatic microphone mixing, an automatic feedback suppressor, ambient noise detection and adjustment, and a realtime clock with an event scheduler. Pêma is more than 80 percent energy efficient out of the box.

Atlas Sound PA60G

Atlas Sound PA60G

Small and compact, and engineered for efficiency and reliability, the Atlas Sound PA60G amplifier is an excellent choice for paging or background music (BGM) systems, small to medium speech privacy systems, and any applications where distributed audio is required. It provides 60W into a 70.7V/100V line and has a balanced line-level input via Phoenix connector and a summing unbalanced RCA input. Output is to 70.7/100V speaker lines via a Phoenix connector. Additional features include status LEDs, removable level controls with set-it-and-forget-it security cover, and a global (100VAC-240VAC) power supply.

Audio Authority SonaFlex SF-16M

Audio Authority SonaFlex SF-16M

The Audio Authority SonaFlex SF-16M is a unique blend of premium, 2-channel amplification, matrix distribution, flexible input options, signal processing, and open control capability. Designed and assembled in the U.S. with the custom installer in mind, the SF-16M gives you a different solution to common residential and commercial distributed audio applications. Simplified switching of popular consumer audio sources such as an iPod, AppleTV, and BluRay player can be located near the listener and connected via Cat-5 to the FlexPort audio inputs. The SF-16M uses Sound Scenes, which are system-wide snap-shots of all volume and source settings. Up to 10 Sound Scenes can be stored and recalled. For installations with multiple SF-16M’s linked together, additional system-wide Sound Scenes can be stored and recalled across all units.

Behringer iNuke

Behringer iNuke

The light-as-a-feather iNuke powers amps by Behringer weigh little thanks to high-density Class-D technology and ultra-efficient switch-mode power supplies. Using transistors with extremely high slew rates and optimizing other parts of the circuitry, these amps react instantly to the most demanding electronic bass impulses. And because they are more efficient than conventional designs, they don’t require the massive heat sinks and heavy toroid transformers typically associated with their conventional Class-D counterparts. The front-panel controls and indicators provide the system’s state of being quickly and simply. All channels feature positive-detent gain controls with signal LEDs that light when a signal is present, as well as clip LEDs to indicate when the signal is distorted and the input signal needs to be reduced. The rear panel has combo XLR and 1/4in. TRS input connectors and professional twist-lock speaker sockets. The rear panel houses switches that enable iNuke amps to work in either dual mono, stereo, or mono bridge mode. A built-in crossover switch enables the amp to operate in biamp mode, sending low-frequency content to passive subwoofers, while the high-frequency output is channeled to full-range loudspeakers.

The iNuke DSP series amplifiers have built-in DSP and 24-bit/96kHz converters to ensure signal integrity with an extremely broad dynamic range. DSP functions include a sophisticated delay for delay-line loudspeakers, crossover, EQ (eight parametric, two dynamic), and dynamics processing with lockable security settings. A convenient front-panel LCD display allows you to setup and make adjustments directly at the amplifier, without the need for a PC. All iNuke DSP models can be set up, controlled, and monitored via the front-panel USB connector. iNuke models include NU1000, NU3000, NU6000, NU4-6000, and NU12000. The DSP models include NU1000DSP, NU3000DSP, NU6000DSP, and NU12000DSP. All models feature a limited three-year warranty, ultra-efficient switch-mode power supply for noise-free audio, superior transient response, and low power consumption. They also feature Zero-Attack limiters offering maximum output level with reliable overload protection. Independent DC, LF, and thermal overload protection on each channel automatically protects the amplifier and speakers without shutting down the show.



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