SVC on Twitter    SVC on Facebook    SVC on LinkedIn

Related Articles

 

Power Amplifiers

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


   Follow us on Twitter    

Carvin’s DCM-L series is an amp that delivers great sound and reliability, ultra-light weight, models from 200W to 3800W, and made-in-the-U.S.A. quality. Each amp is Audio Precision tested, which includes a burn-in under full load to assure reliability and specs. The DCM3000L is 15lbs. and features ultra-low THD at 0.03 percent at 8Ω, soft-start power-up that prevents tripping AC breakers, Speaker Guard that protects from harmful DC, shock-proof SMT reliability, and a three-year warranty. The Class A/B linear topology features high current bipolar output devices that reduce distortion to a near theoretical zero limit while delivering high slew rate performance. Five high-ratio 6063-T5 flow-through aluminum heat sinks remove heat fast with multispeed fans that run quiet under 2Ω loads. Air is pulled from the rear and exhausted to the front to keep the rear of the rack cool. The accessory group features recessed front controls with status indicators that won’t get bumped or easily moved. A rear ground lift switch eliminates ground loops. A parallel input switch eliminates the Y adapter typically used for paralleling channels. The mono bridge switch delivers the full power of the amp (both channels) into one output. The limiters are available at the push of a button to help control peaks protecting your drivers. Connecting is done with balanced XLR and 1/4in. TRS inputs.

Crest Audio Pro-Lite 2.0

Crest Audio Pro-Lite 2.0

The Crest Audio Pro-Lite 2.0 power amplifier features a lightweight, efficient design with high power and stable performance. It is designed with an advanced, high-speed Class-D design with a switch-mode power supply that reduces weight while increasing reliability, thermal efficiency, and output power in parallel, stereo, and bridged modes. It boasts two channels with independent, fourth-order 100Hz crossovers and power ratings of 540W per channel at 4Ω stereo (up to 2,000 watts bridged at 4Ω) at just 11.6lbs. The onboard protection suite includes Crest Audio’s proprietary Automatic Clip Limiting (ACL) circuitry, which prevents the amplifier from sending potentially damaging clipped signals to the loudspeakers, as well as DC, temp, signal, and active safeguards, all referenced on the front panel with LED indicators. The Pro-Lite series is backed by a free five-year extended warranty.

Crown DriveCore

Crown DriveCore

Crown’s new DriveCore install series of amplifiers are based on proprietary technology and feature digital audio transport via Harman’s proprietary BLU-Link, balanced analog inputs, and a priority router that allows for the specifying of a primary input and automatic switching to the other input if audio is lost. HiQnet protocol over standard TCP/IP provides for better monitoring, control, and audio manipulation, as well as allows the Audio Architect software and powered by Crown app to work with DCi amplifiers. DSP capabilities include LevelMax limiters, input/output EQ, delay, matrix mixer, and speaker-line monitoring. Power points of 300W or 600W in 2-, 4-, and 8-channel configurations are possible in a 2RU form factor. They also feature direct drive constant voltage using either 70Vrms or 100Vrms. Highly efficient internal cooling fans provide airflow to the most heat-generating parts.

Electro-Voice CPS line

Electro-Voice CPS line

New to Electro-Voice’s CPS line are the multi-channel amplifiers CPS 4.5, CPS 4.10, and CPS 8.5. They offer 4- and 8-channel independent Class-D Variable Load Drive (VLD) amplifier blocks, each one capable of delivering up to 500W and 1,000W into Low-Z or High-Z loads. Each channel can be configured individually for maximum power output intoeither 2Ω, 4Ω, 70V, or 100V networks without involvement of any output transformers. In addition to low current consumption and heat dissipation, these amplifiers provide remote standby switching with just 5W consumption in standby mode. An optional remote-control module RCM-810 provides control and supervision features via IRIS-Net, including monitoring of amplifier status and realtime load supervision. In addition, via RCM-810, the variable load drive characteristics can be set for maximum power output into any load between 2Ω and 10Ω, in steps of 0.1Ω. Other features include rear-mounted attenuators, switchable 50Hz high-pass filter (Hi-Z mode), complete protection: thermal, overload, shorts, HF, DC, back-EMF, inrush current, Phoenix-type input and output connections, remote power-on/off contact, programmable power-on delay settings, and front-to-rear fans.

Extron XPA 4002

Extron XPA 4002

Extron’s XPA 4002 and XPA 4002-70V are the newest additions to the XTRA series of high-power, multi-channel power amplifiers. Both XPA 4002 models are now available, together with the XPA 2002 high-impedance models, XPA 2003C, and XPA 2004. The XPA 4002 and XPA 4002-70V deliver two channels of 400Wrms for low impedance and 70V speaker systems. Possible applications are large environments such as auditoriums, convention centers, and houses of worship for powering a large quantity of high-impedance distributed speakers, high-powered speaker cabinets, or paging horns. They feature a highly efficient, advanced Class-D design with patented CDRS (Class D Ripple Suppression) technology that provides a smooth, clean audio waveform and an improvement in signal fidelity over conventional Class-D amplifier designs. XTRA series power amplifiers are housed in a compact 1RU, convection-cooled full-rack width enclosure, and do not require fans for cooling, making them great for installation in racks as well as enclosures with limited space and ventilation.

Lab.gruppen E Series

Lab.gruppen E Series

Lab.gruppen’s new E series amplifiers are built upon the company’s amplifier platform IntelliDrive Energy-Efficient Amplifier (IDEEA). For operating efficiency, the E series uses a new high-headroom universal power supply accepting any mains voltage from 70V to 265V at 50Hz or 60Hz. The Class D output stage is highly efficient (above 90 percent), while the inherently bridged topology allows up to twice the rated power output on one channel when the other channel is unused or driving a low-power application. Each channel has a two-position switch that sets the output for driving either low impedance or high impedance (70V) loudspeaker systems, with a +4dBu sensitivity regardless of load type. E series amplifiers are designed for ease of installation and reliable service, with notable features including a 50Hz high-pass filter (switchable per channel), inputs and outputs on detachable Phoenix-type screw terminals, and a temperature-controlled fan that turns off for low-level signals. Comprehensive circuit protection and fault indication are also included. E Series amplifier models include E4:2 – 400W, E8:2 – 800W, and E12:2 – 1,200W.



Acceptable Use Policy
blog comments powered by Disqus

Browse Back Issues
BROWSE ISSUES
  July 2014 Sound & Video Contractor Cover June 2014 Sound & Video Contractor Cover May 2014 Sound & Video Contractor Cover April 2014 Sound & Video Contractor Cover March 2014 Sound & Video Contractor Cover February 2014 Sound & Video Contractor Cover  
July 2014 June 2014 May 2014 April 2014 March 2014 February 2014