M-S Recording Technique

The “Mid/Side”, or M-S recording technique, was first designed by EMI engineer Alan Blumlein. He invented the method in 1933 and used it for some of the first stereophonic recordings. The M-S microphone recording technique is commonly used in broadcasts,...

Solid-State Guitar Amplifier

Solid-state circuits found in guitar amplifiers are often based on a transistor or semiconductor. These amplifiers are in most cases cheaper to produce and more reliable than tube-based versions. They are much lighter and less fragile than them as well. Solid-state...

Thermoacoustic Speakers

What are Thermoacoustic speakers?   Thermoacoustic speakers are speakers that generate sound waves from temperature fluctuations. They rapidly heat and cool conducting materials. Unlike conventional voice-coil speakers, thermoacoustic speakers do not rely on...

Transparent Ionic Conduction Speaker

What is a Transparent Ionic Conduction Speaker?   A transparent ionic conduction speaker is a relatively new form of technology. In 2013, a research team from Harvard University introduced transparent ionic conduction speakers to the public. Jeong-Yun Sun and...

Heil Air-Motion Speakers

What are Heil Air-Motion Speakers?   People often confuse Air-Motion Speakers’with ribbon loudspeakers when they see the folded diaphragms set in the shorthorn. But they are quite different. A ribbon radiates the sound by the whole diaphragm moving backward...