
A THX Certified Multimedia Speaker system is designed for those who crave the power and performance of home theater and studio sound at the desktop.
A deep understanding of the filmmaking process is at the very heart of every THX Certified 2.1 and 5.1 speaker system from Logitech. Engineered to mirror the performance characteristics of professional studio speakers, THX certification recreates peak, Reference Level quality at your desktop listening position.

Logitech Z623 2.1 Speaker System
THX worked closely with Logitech during product development, ensuring the two-satellite and subwoofer Z623 speaker system was meticulously mapped to THX design standards. Then, THX performed more than 400 bench tests, including frequency response, noise, distortion and power. The result is a THX Certified Multimedia Speaker system that delivers THX Reference Level sound pressure and fidelity – letting you hear every bass note, sound effect and dialogue as it was created in the studio.
For the best listening experience, THX recommends having a 28-inch viewing distance from your speakers and desktop display to your seating position. If you have a 5.1 Logitech system, the Front Left and Right speakers should be placed to the side of your display, with the Center Channel Speaker either above or below the display —aimed at the listening position. The Surround speakers should be positioned 56 inches from your seating position. Click here to get more Speaker Setup Tips from THX.