https://www.cnet.com/news/elacs-carina-speaker-shaping-up-to-be-designer-andrew-jones-next-hit-at-ces-2019/ > All of the speakers are based on 5.25-inch aluminum drivers and Jones told me he sourced a different folded tweeter from the one the company typically uses to keep costs down. The BS243.4 bookshelf features a bass reflex located on the bottom of the speaker and this in combination with the tweeter achieves a frequency range of 46Hz to 30kHz. > Jones treated me to a demo of the still-in-development speaker, and despite the change from a dome tweeter to the Jet, the design unmistakably bore his signature sound. It had an ultra-wide sound stage that enveloped the room with just a slight forwardness in the upper mids, though without harshness or brightness. For a small speaker with a 5.25-inch driver, the bass was impressively deep and punchy.