Different kinds of speakers generally have separate requirements when being attached to the receiver in a given setup. Speaker cable has classifications based on the charge that it can handle. These are often distinctive enough for matching to specific kinds of speakers, though most speakers accept less than optimal connections as long as the cable can tolerate their charge.
On eBay, there are a number of brands of cable available. Most of the time, speaker cable refers to general use cable as opposed to cable meant specifically for speciality speaker types like subwoofers. Liven up your next gathering by finishing your dream stereo system with the right cable.