Live music and related events needs lots of electrical power to run the audio, video and light systems. Energy is a big costs for a festival. Besides the cost of the electricity itself, there are typically considerable cost of getting enough electricity for a large event and distributing that electricity where it is needed using →
Here are some interesting videos related to PA and sound reinforcement systems. Wikipedia defines that a public address system (PA system) is an electronic system comprising microphones, amplifiers, loudspeakers, and related equipment. It increases the apparent volume (loudness) of a human voice, musical instrument, or other acoustic sound source or recorded sound or music. The →
https://www.maximintegrated.com/en/app-notes/index.mvp/id/750 This article from MAXIM discusses the key relationship between video resolution and the required bandwidth to accurately process and display that video signal. The equations and table address standard definition, NTSC and PAL, as well as high definition DTV standards. Computer display formats are also covered. →
This posting tells the story how I got a video made of my old computer demo from almost 25 years ago. The story of that computer demo told in Computer Demo: Bogus Party III Video by Bogus Device posting. That old program was designed to run on DOS operating system on a pretty old hardware. →
This is a teardown of Behringer B208D active PA speaker. Inside Here is input pre-amplifier Look inside power electronics metal box Inside here is swich mode power supply (mains to around +-27V) and amplifier board. Amplifier board has 160W class D amplifier chip (below board and possibly broken) for driving low frequency speaker element, 40W →
This is a story goes back to around 25 years. This a a story of Bogus Party III Video by Bogus Device computer demo that I was making in 1993. The demoscene is an international computer art subculture focused on producing demos: self-contained, sometimes extremely small, computer programs that produce audio-visual presentations. The purpose of →
https://www.assembly.org/summer18/demoscene Watch the demo competition live on Finnish national TV! The legendary Assembly demo competition will be shown live on national (Finnish) YLE TV2 channel on Saturday August 4 starting around midnight after the ROG Tournament CS:GO Finnish Championship 2018 Finals. You can view event also on-line: AssemblyTV hosts interviews, chats and of course the →
https://kk.org/cooltools/alex-glow-hackster-io/ Alex Glow creates electronics videos and tutorials at Hackster.io in San Francisco. This article and podcast presents useful tools for making and broadcasting videos to Internet. Check also Cool Tools Honorable Mentions for some awesome looking maker tools and materials that didn’t fit in the podcast! →
Remote powering implies that the power equipment is not local but some distance away. This article is remote powering audio edition. It can be seen a continuation of my earlier Remote powering over communications cabling posting series. Microphone: Plug-in-power Plug-in power is designed to power electret microphones through same audio cable that carries audio. Most →
Here is a story of one cheap HDMI digitizing device. I have wanted to connect devices with HDMI output Open Broadcast Studio video mixer/streaming software running on PC. Usually HDMI to USB adapters are expensive boxes (around $100 or more). But the I saw this really cheap (€16,15 / US$ 18.99) Mini Portable HD USB →