With the Wharfedale Diamond 220, you can listen to a balanced sound with a deep bass. At the bottom of this bookshelf speaker you'll find a bass reflex port. Together with the 130mm woofer of woven kevlar, the speaker provides a strong bass sound. This way the low tones of a rock song sound powerful and dynamic. The 25mm soft dome tweeter produces clear treble tones. As a result, the effects, dialogue or singing voices aren't lost in the mix. The casing consists of a combination of MDF and chipboard. This material reduces resonance, so that distortion in the sound is minimal.