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When using an LFE/subwoofer cutoff (-3dB) at 80Hz / 24dB/octave slope, the frequencies slightly above the 80Hz setting are high enough to still have directional perception, especially if the sub is located in close proximity to the listening position. In the 5.1 Digital realm, the LFE channel was introduced as a means to alleviate the demand placed on the other channels to deliver low frequencies with ample amounts of "oomph" without limiting the dynamic range. The purpose of a subwoofer is to reproduce very low frequencies that most loudspeakers cannot reproduce with authority on their own. It is meant to act like a subwoofer, not a woofer. Many times its easy to forget what a subwoofer is meant to do. Just because THX specified a suggested LFE cutoff frequency, doesn't mean it is always appropriate for all room/speaker implementations or that it must be blindly followed. Bass Management Should Be Crossed over at the Best Setting for Your System While some systems recommend 80Hz (the standard THX setting for Select and Ultra2-based systems) this is not always the best setting for all theater systems. For a deeper dive into crossover frequencies, check out our Digital Bass Management Primer.Setting the correct bass management on receivers and processors is essential to getting the most out of your audio system.If you’re noticing a bass bump at the crossover frequency, try adjusting the volume control to match the output of your main speakers.Ideally, the blending will be so seamless, you won’t be able to localize the bass and everything will play in unison.
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Listen for a smooth transition between speakers and subwoofer.If you’re unsure about your speaker’s ideal crossover frequency, try our SVS Subwoofer Matching Tool, which will recommend the ideal SVS subwoofer for your speakers and tell you the best crossover frequency.Tower speakers with 8”-10” woofers: 40 Hz or Large/Full-Band (i.e., full-range).Tower speakers with 4”-6” woofers: 60 Hz.Very large center, surround, bookshelf: 40-60 Hz.Large center, surround and bookshelf: 60-80 Hz.Mid-size center, surround, bookshelf: 80-100 Hz.Small center, surround, bookshelf: 100-120 Hz.On-wall or Tiny 'satellite' speakers: 150-200 Hz.The numbers below highlight general guidelines for speaker/subwoofer crossover frequencies.The most common crossover frequency recommended (and the THX standard) is 80 Hz.If you know your speaker’s frequency range, set the crossover point roughly 10 Hz above the lowest frequency your speakers can handle cleanly.As with any bass management functions, it’s helps to do some critical listening and experimentation to achieve the best sounding results.Ĭheck out the entire SVS Subwoofer line-up to choose the subwoofer that is best for your TV/movie viewing. If you’re using an AV processor, preamplifier or a DSP subwoofer to adjust the crossover frequency in a two-channel or surround sound set-up, here’s a few tips to get the best performance possible. It’s generally best to leave these settings where they are. Most modern AV receivers feature an auto EQ program that will assign the proper crossover frequency automatically based on the capabilities of your loudspeakers. The crossover frequency of your subwoofer is the frequency at which your speakers start to roll off and your subwoofer kicks in with LFEs and bass notes. SVS SoundPath RCA Audio Interconnect Cable SoundPath Tri-Band Wireless Audio Adapter