A standard microphone and audio amplifier are used to send the signals to the transmitter, which is just a typical garden-variety laser that anyone could find for a few dollars. A few LEDs prevent ...

Luckily, [Terry] at D-Lab Electronics has a few suggestions on budget-friendly transformers, and even shows off a nice three-tube audio amp using them. The reason transformers were and still are ...

Fluance has expanded its powered loudspeaker options with the Ri91 and Ri71 reference models. Both feature AMT tweeters and ...