Class D Amps

Posted on Jun 24, 2016 in Amplifiers

The EA iAMPs are all “Class D” amplifiers. Class D amplifiers are highly efficient and have a great power to size ratio. EA’s Class D amps are so efficient in fact (85%) that the need no cooling fan (a source of noise and weight). In the early days of the iAMP 800 we put a […]

Neodymium Magnets

Posted on Jun 24, 2016 in Speaker Cabinets

Neodymium, or Neo, is the new buzzword among speaker manufacturers, and well it should be. Neodymium is an extremely lightweight, yet highly magnetic material that some believe will revolutionize the speaker industry. The advantages of a highly sensitive, lightweight driver in musical instrument amplification are obvious. The EA NL-210 weighs in at a mere 39 […]

Transmission Line Cabinets

Posted on Jun 24, 2016 in Speaker Cabinets

Imagine a tuba stuffed into a rectangular box. The tuba’s mouthpiece is mounted to the rear side of the woofer. That is the concept of the Transmission Line Cabinet. In a transmission line, the sound wave from the back of the woofer is channeled down a long pathway filled with a fibrous bundle of wool […]

The Whizzer Cone, or Wizzy

Posted on Jan 20, 2015 in Speaker Cabinets
The Whizzer Cone, or Wizzy

We here at EA are perfectionists. It is difficult to admit when we have goofed. But, well as much as I hate to admit it, we goofed big. We goofed big and glorious and wonderful. We goofed in a way that has brought us sonic pleasure and a really big grin. EA is known for […]

Speaker Sensitivity and Kevlar

Posted on Jan 19, 2015 in Speaker Cabinets

Sensitivity represents one of the most useful specifications published for any speaker. Sensitivity, measured in decibels, is a representation of the efficiency and volume you can expect from a device relative to the input power. This is important because it requires twice the power to increase the volume of a speaker by 3dB. For example, […]