A New Life For An Old Amplifier
An audio amplifier was once a fairly simple analogue device, but in recent decades a typical home entertainment amplifier will have expanded to include many digital functions. When these break they…
Bose SoundTouch Smart Speakers Get An Open Source Lifeline
After initially announcing that Bose will completely turn off all ‘smart’ features in its SoundTouch series of speaker products, the company has seemingly responded to the wave of unhap…
How Do PAL And NTSC Really Work?
Many projects on these pages do clever things with video. Whether it’s digital or analogue, it’s certain our community can push a humble microcontroller to the limit of its capability. …
Know Audio: Microphone Basics
A friend of mine is producing a series of HOWTO videos for an open source project, and discovered that he needed a better microphone than the one built into his laptop. Upon searching, he was face…
A USA Feature For A Europe-Market Sony Receiver
A feature of many modern network-connected entertainment devices is that they will play streamed music while on standby mode. This so-called “network standby”is very useful if you fancy…
Reverse Engineering A Soundsystem’s API
We’ve all been stymied by a smart thermostat, coffee maker, or other device which would work fine on its own but ultimately seems to be worse off for having an Internet connection — so…
How To Turn Cheap Speakers Into Something A Little Better
[Adam Francis] bought some cheap speaker drivers from AliExpress. Are they any good? Difficult to tell without a set of enclosures for them, so he made a set of transmission line cabinets. The resu…
Responsive LCD Backlights With A Little Lateral Thinking
LCD televisions are a technological miracle, but if they have an annoying side it’s that some of them are a bit lacklustre when it comes to displaying black. [Mousa] has a solution, involving…
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