The Klipsch Forte is a horn speaker. It uses horns on the mids and highs, not mere waveguides. Compression drivers actually need horns, with the skinny neck, flare, and all. It's an acoustic transformer. Bass horns require big size to be effective at low frequencies. Therefore not used often or practical, unless in BLH, and even then, not much below 80Hz in most implementations. Waveguides are typically the little makeshift horns "lite" used with small dynamic drivers, i.e. tweeters. The small JBL self-powered monitors use waveguides. They don't have a longish neck and flare to mount to a compression driver with a tiny exit of 1-2". Let's not redefine horn / compression drivers as waveguide / compression drivers.