To understand car stereo speakers, it helps to think of sounds as falling into three basic categories: high-frequency sounds, low-frequency sounds, and mid-range ones. Most people think of low-frequency sounds as bass and high-frequency ones as treble. The woofers and subwoofers of a car stereo’s speaker system handle the bass sounds, while tweeters handle treble.
Groundshaking bass, that’s what subwoofers are all about. It’s not just the volume that creates the thumping vibration so familiar to anyone who lives near a teenager or a hard-core car audio fan, it’s the types of sounds subwoofers are designed to handle. Subwoofers pick up the very low-frequency sounds (100 Hz or less) that ordinary bass speakers can’t handle.
Anyone venturing into the world of digital camera ownership for the first time can be forgiven for feeling a bit overwhelmed by the choices. Here are some basics of buying digital cameras to get you started.