Based on this, we generally recommend designating all the main speakers as "small," which sends the low frequencies in all the main channels to the subwoofer. But the main channels often have very low frequencies as well, and those frequencies are much better served from the subwoofer rather than the main speakers. Most movie soundtracks are mixed in 5.1 or 7.1 surround sound, and the ".1" subwoofer channel carries much of the deepest bass-things like explosions, revving engines, and sonic action you can feel in your chest and throughout your body. (The crossover frequency is another parameter you can set in the AV receiver and normally defaults to 80 Hz.) The powered subwoofer has its own amplifier, so the amps in the AVR are free to give the midrange and high frequencies all the power they need to sound their best. That way, all frequencies below the crossover point are sent to the subwoofer rather than the main speakers.
To avoid this problem, it is far better to include a powered subwoofer in just about any home theater speaker system and, in most cases, designate all your main speakers as "small," regardless of their physical size. Asking an AV receiver to drive full-range speakers to play low frequencies with authority puts a real strain on the amps and robs the midrange drivers and tweeters of the power they need to create an expansive soundstage with massive dynamic impact. Even worse, attempting to reproduce those subterranean tones requires a huge amount of amplifier power. When many large, so-called full-range speakers try to deliver deep bass, they can sound distorted and overworked. SVS SoundPath RCA Audio Interconnect CableĮven most physically large speakers can't reproduce low frequencies nearly as well as a dedicated subwoofer.
SoundPath Tri-Band Wireless Audio Adapter
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