| Term | Definition |
|---|---|
| Efficiency Rating | The loudspeaker parameter that gives the level of sound output when measured at a prescribed distance with a standard level of electrical energy fed into the speaker. The loudspeaker parameter that gives the level of sound output when measured at a prescribed distance with... Read More |
| Electronic Crossover | Uses active circuitry to send signals to appropriate drivers. More efficient than passive crossovers. Uses active circuitry to send signals to appropriate drivers. More efficient than passive crossovers. |
| Electrostatic Loudspeaker | A speaker that radiates sound from a large diaphragm that is suspended between high-voltage grids. A type of loudspeaker made popular with audiophiles by Quad. Brands such as Martin-Logan, Soundlab, Innersound, and Quad keep the technology alive. |
| Equalizer | Electronic set of filters used to boost or attenuate certain frequencies. |
| Euphonic | As a descriptive audio term, usually refers to a coloration or inaccuracy that non-the-less may be sonically pleasing. Often found in low-powered tube amplifiers, which tend to emphasize the midrange. |
| Extension | How extended a range of frequencies the device can reproduce accurately. Bass extension refers to how low a frequency tone will the system reproduce, high-frequency extension refers to how high in frequency will the system play. |
