quadral ALTIMA® diaphragms give the woofer and low/midrange units clarity and transparency, while the double annular diaphragm made from silk fabric is responsible for the finely honed treble response of the RiCom-alpha tweeter. Add to this an optimally designed cabinet with real-wood veneer finish and a combination of high quality and compact dimensions. By design a purist two-way system, this speaker nevertheless includes an integrated long-throw woofer that impressively boosts response in the lowest bass regions.