Price: (as of – Details) Featuring updated Tractrix Horn technology, the Klipsch Reference R-40M Bookshelf Speaker Monitors with 4” woofers deliver the cleanest, most natural sound possible. ALL NEW 90° x 90° TRACTRIX HORN: Experience the cleanest, most natural sound possible. The increased outer horn dimensions allow for directivity control over a larger bandwidth of… Continue reading klipsch Reference Next-Generation R-40M Horn-Loaded