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Joseph J. Sahyoun

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Background Information

Employment History



President and Chief Engineer




Web References (24 Total References)

CustomLounge [cached]

With a constant demand for this amplifier, Earthquake's chief engineer Joseph Sahyoun descended into the Earthquake research laboratories determined to crack the code to the universe and design an amplifier with no compromise in sound quality and competitively priced.

CE Pro Guides - Earthquake Sound Page [cached]

Founded in 1985 by Joseph J. Sahyoun, Earthquake Sound designs, manufactures, and markets high performance audio systems for use in home audio-video systems, after-market and OEM automotive systems.

Features - Secrets of Home Theater and High Fidelity [cached]

A Video Interview with Joseph Sahyoun of Earthquake Audio

I interviewed Joseph Sahyoun, President of Earthquake Audio Corporation, about several of their newest technological developments, including new voice coil cooling that will allow more power to be delivered from subwoofer drivers. Press Release! [cached]

"The Image IW-846X is just startlingly precise," said Joseph Sahyoun, Earthquake's president and chief engineer.

Founded in 1985 by Joseph J. Sahyoun and his brother Abraham Sahyoun, Earthquake Sound designs, manufactures, and markets high- performance audio components for home-audio, home audio/video, and home-theater systems as well as aftermarket and OEM automotive audio systems.

Stereophile Guide to Home Theater / Magazine Archives [cached]

Earthquake's designer, Joseph Sahyoun, created an entirely new design, the Symmetrically Loaded Audio Passive System (SLAPS), that is said to solve both problems.The SLAPS passive radiator eliminates the need for a metal basket, and produces a device whose movements forward and back are symmetrical.It uses two flat diaphragms back-to-back, spaced by about an inch.Each diaphragm is composed of a special multi-layer polyether draw material that combines flexibility with strength, and uses a large-diameter (1.75 inches) roll in its surround material so that it can move the necessary 2 inches to produce a clean 15Hz.

The passive radiator is tuned to 17Hz , a full octave below the sealed cabinet's resonance point.This is said to eliminate most of the problems associated with a ported design.

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