Helix LM3886 Amplifier

Category: Product Published: Monday, 15 October 2018 Written by Richard Hoogeveen

After hearing the LM3886 try-out of Jan in a small mediaplayer I decided to design my own LM3886 solid state amplifier. After reading many hours and trying some designs I finally convinced myself to design my own version of the LM3886 printed circuit board. Years ago I designed many printed circuit boards up to 8 layers and I do know the pitfalls. The pcb layout is one of the most important part of your design. The pcb contains input noise filtering and on the outputs are the often seen Thiele and Zobel (snubber) components for stability.

I also read about the very interesting USA built switching power supplies of Connex, they make them especially for audio. A 300 Watt Connex SMPS  is in the Helix amplifier. The case is from the well known Italian Modu company.

The Helix sounds absolutely amazing and has very low distortion numbers !

 

Helix

2 x 75 Watt / 4 Ω, 0.005% THD

2 x 40 Watt / 8 Ω, 0.0025% THD

0 - 85Khz (-3dB)

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Introduction price for a hand build amplifier 799,- Euro

 Built your own "Helix" ?  ->>> Populated 80 x 65 mm LM3886 pcb (1 channel) 109-, Euro

 

 

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