Klipsch RP-402S Surround Sound Speakers - Pair Color_Red Insulated Gate Bipolar Transistor (IGBT):

Insulated Gate Bipolar Transistor (IGBT): audiophile and powerful

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Translated from the tech: Really smart people engineered these medium speakers with really cool components

Multibeam Surround Sound

Klipsch RP-402S Surround Sound Speakers - Pair Color_Red Insulated Gate Bipolar Transistor (IGBT):The Reference Premiere RP 402S surround speakers utilize the latest Klipsch acoustic technologies transform your movies into a completely immersive home theater experience. Hybrid Tractrix Horn technology Klipsch proprietary Tractrix horn loaded technology ensures high frequency energy of the Reference Premiere surround sound speaker is aimed directly at the listener and reduces unwanted, artificial reverb caused by indirect sound bouncing off walls