Energy Connoisseur 2-Way In-Wall 6.5" Rectangular Speaker - Pair offers 8 Ohms, 40 Watts, 75-20K Hz, Tweeter is 1/2" mylar. The Energy® Connoisseur Series speakers feature the perfect mixture of precision sound and affordability. The polypropylene woofer and silk or mylar tweeters boast accurate treble, wide dispersion and incredible stereo imaging. All Energy® speakers come with a five year warranty so you can install them with confidence. Energy®, a Klipsch Group, Inc. brand has been a leader in audio research and development as well as in the engineering and manufacturing of speakers since 1973.