After I posted my plans for XLR cable tester to Facebook audio DUY group, there was discussion on similar circuits other people has made. Steve Smith wrote (put here with his permission): “If you’re into making your own stuff, this will show up any fault with a mic cable when connected to phantom power. Three →
The microphone of the beast? Depends on the culture. We’ve all heard about the infamous number 666, which is rather cryptically referred to as the “number of the beast” in the New Testament, and has more recently become known as the number of the Antichrist. In the Bible, 666 is also the number of talents →
Behringer Cable Tester CT100 is a pretty nice and cheap cable tester for all kinds of audio cables.The CT100 accepts many type of cable you might use in a recording or live performance situation: XLR, mono and TRS phone (¼”, 1⁄8″, TT), RCA and even MIDI. here are three operating modes: Cable Test, installed Cable →
The Western Electric Model 500 and its subsequent variants were so ubiquitous that you almost couldn’t go anywhere without seeing one, especially in the United States. You have seen and heard this literal fixture of American life phone on countless of TV series and movies. Unfortunately many producers have been a little lazy and did →
Building a sound system is often a highly personal process, from deciding what to get, to assembling and using it. Here is my PA system I built in 1990′s and used for some mobile DJing. The need for measurements were that it should fit easily to a normal size car with everything else that is →
A ground loop in your AV system caused by antenna connection or TV cable is very common if you have your computer connected to the same system. This type of ground loop problem can be solved by using suitable isolator between your AV system and the antenna cable. Antenna isolator is very convient way to →
I have designed many years a VGA cable based video camera cable which could hande video in two directions (from camera to mixer and return video to cameraman), a two-way voice connection (ClearCom type) and 12V power to the camera. All the signals run along an equally long (tens of meters) VGA cable. These were →
I saw thus funny audio system noise troubleshooting video at Facebook. It was originally posted to YouTube under name Where does that noise come from? →
After the mid 90s boom in popularity glitch has become a critical part of contemporary popular esthetics. How to make Analog Video Glitches | Circuit Bending video discusses how to make unique analog “glitch” textures for your next video: Karl Klomp‘s Dirty Video Mixer is one of the best known and wide used simple circuits →
I have had several situations where everything is hum free, but when I disconnect or power down the signal source (smart phone, computer etc..) I start hearing annoying humming noise. The noise goes away when the signal source is plugged in and powered. Latest example was some cheap multimedia speakers connected to USB sound card. →