MC2 Audio Launches E100 Amplifier
British manufacturer MC² Audio has announced that its highly anticipated E100 amplifier is now shipping. The remarkably compact 4-channel amplifier is the flagship of the companys highly successful E series. The official launch marks not only the companys most powerful four-channel amplifier, but also the first 4 channel proprietary class-D switchmode amplifier to be developed by MC², which is based in Honiton, Devon, UK. Various proprietary technologies have been utilised in the design. These include a Hybrid Dual Loop Feedback system (HDLF) for load independent, accurate audio reproduction, a high performance Active Energy Steering Circuit (AESC), custom drive circuitry and magnetic components to ensure highly efficient, high power, low impedance operation without compromise. Right from the outset, the E100 was designed to run 2-ohm loads, thus giving huge power in excess of 3,500W from each of the four channels. This gives the amplifier further flexibility for running bass applications and allows bridging of a pair of channels down to 4 ohms. As such, bridging a pair of channels via the rear panel switches turns the E100 into a very powerful bass amplifier offering 7,400W at 4 ohms and over 5,300W into 8 ohms. Outstanding distortion and noise figures are quoted right up to maximum output. In order to achieve high sonic quality, full range, from a class-D amplifier, MC² developed a unique Hybrid Dual Loop Feedback system (HDLF). This corrects errors generated in the switching amplifier stages and the output reconstruction filters, minimising distortion and maximising Signal To Noise ratio. As such, this also ensures the E100 will faithfully reproduce audio signals completely load independent. In addition, the HDLF is part of MC²s unique Class-D modulator technology. Each section of the Modulator and Feedback circuits design is carefully analysed to ensure that minimal errors are introduced into the audio signal chain. As part of the extensive R&D process, MC² (mc2-audio.co.uk) also spent several months studying and modelling individual components and the behaviour of the switching circuitry employed. The results of this work included a high performance Active Energy Steering Circuit (AESC), custom drive circuitry and magnetic components.Audio Amplifier Circuits - News
These include a Hybrid Dual Loop Feedback system (HDLF) for load independent, accurate audio reproduction, a high performance Active Energy Steering Circuit (AESC), custom drive circuitry and magnetic components to ensure highly efficient, high power,
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It acquired the circuit's low-power audio amplifier technology when it bought Bristol-based fabless chip firm Audium. "The wireless amplifier is capable of delivering 13W burst power into 8Ω," said the HiWave, "At normal listening volume,
Longtime EDN contributor Bob Pease was a staff scientist at National Semiconductor Corp., where he specialized in analog-circuit, amplifier, and band-gap voltage reference design. His first article for EDN was published on February 20, 1979.
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