In the previous post I talked about sourcing kits and boards suitable for novices. Once confidence builds and a little experience and knowledge is gained, other projects beckon and you find yourself perusing projects designed by generous folk who release their designs into the wild. Although most are usually just schematics, occasionally these may come…
Category: DIY Audio
A novice’s guide to DIY kits and boards with support
Whilst there is a proliferation of DIY audio PCBs available through sites such as Ebay and the many other Chinese based sites, there appears to be a relative dearth of suppliers of DIY kits and boards with accompanying support. For those with a little experience, a PCB with accompanying schematic is all that is required…
All together now….building an integrated DAC/streamer.
A while ago, when building my friend’s chipamp, I had the intention of incorporating an internal DAC and streaming capabilities into the enclosure. Nothing special, just a Pi Zero and DAC HAT. Noise problems that I didn’t have the time (or knowledge) to troubleshoot meant the amp was just built as standard. The idea of…
Rod Elliott ESP P88 Pre-amplifier
I’ve been impressed by the ESP projects by Rod Elliott, they work well, are simple for novices but with plenty of scope for modifications. The projects come with extensive documentation, including construction advice if you buy the PCBs. I decided to try his well regarded Project 88 preamplifier to go with my Nelson Pass ACA….
Chipamp.com LM3886 PCB
This is the original chipamp.com board for the LM3886 amplifier, generously released into the public domain by its designer Brian Bell. The board size is 30x74mm so comes in really cheap when ordering. Although the schematic is provided below, it is also worth having a look at the datasheet for more information. Click here to…
Ray Samuels Audio XP-7 Headphone Amplifier clone
I bought a mixed bag of boards recently and came across this one knowing nothing about it, apart from it appearing to be a headphone amp. I finally found out that it is a clone of a commercial project – the Emmeline XP-7 which has been around for a number of years. A cursory search…
LM3886 Amplifier Build Files by 00940
A thread on DIYAudio was concerned with creating an open source PCB layout for the LM3886 amplifier. Although initiated and largely designed by user 00940, there has been some input from others, including advice from Tom Christiansen of Neurochrome, resulting in this implementation. Gerber files, the set of files necessary for a PCB lab to…
Chipamp power supply
This power supply comes courtesy of Brian Bell, former owner of Chipamp.com. After relinquishing control of this small company to another individual, the company appeared to go downhill, but after its demise, Brian generously released the designs he created, including this power supply, into the public domain. If board dimensions are kept below 100mm X…
Public Domain Audio Project PCBs
This page is a repository for build files which are considered public domain. It is hoped that by distributing these files widely, they remain visible to DIY enthusiasts looking for free projects that do not infringe on the copyright or intellectual property of the designer. You can download these projects, modify them as you wish…
An open source LM3886 chip amplifier.
I decided to build an amplifier for a friend. There are a number of good chips for amplifiers and I managed to purchase a pair of LM3886 opamps new for £5 from a seller on DIYAudio a few months ago. With the chip decided upon, a suitable layout was sought. As much as I would…