Adjusting phase on a subwoofer is very similar to what happens when you move it along a wall. That's because the phase of both devices changes with frequency. If you don’t know the frequency range of your speaker, use a subwoofer matching tool. Even if you can get them in phase at 80 Hz, they might not be at 100 Hz. But it's not accurate to think of your sub and main speakers as being in or out of phase, except maybe at one particular frequency. Bruce recalled his days setting up sound systems when he'd use a 1.5-volt battery to test subwoofer phase. We always try to get the best sound at the 0 setting, but the phase control can be a … That's good. The blending should sound clean and seamless. Still, it got me wondering if I could come up with a simpler phase check than the ones I suggested in the article, which required either measurement or careful listening. Your subwoofer is properly placed and setup. Home Theater Speaker Wiring Tips, Diagram and Guide for 5.1 or 7.1 Hom... What is 180 Gram Vinyl, and Is It Better? should i do this method playing all speakers together (main+sub) or just in the sub? Now it's time to level match it to … It adjusts the waveform slightly, and that, in turn, changes where the peaks occur in the room. If your subwoofer and main speakers are in phase, the woofer cones on the subwoofer and the speakers will move forward and backward in sync at the subwoofer crossover frequency. Set the crossover point 10 Hz higher than the low end of your speaker’s tolerance range. If they were out of phase, he'd hear a double thump. Next, adjust the gain (or volume). Almost all of today's subs have built-in amps, so this method wouldn't quite work with them. Set the crossover point 10 Hz higher than the low end of your speaker’s tolerance range. My e-mail convo with Bruce gave me some ideas and, ultimately, a method that's simpler than my original. This is the important part, and the part that I’ve done incorrectly … It's provided because the speakers and subwoofer sound best when they are in-phase -- meaning their woofers move in and out in sync with each other. Listen for smooth transitioning between the subwoofer and the speakers. Direct Drive vs Belt Drive Turntable- Which is Better For Turntables? Fluance . Listen for smooth transitioning between the subwoofer and the speakers. First, let me digress a little with an explanation about phase. These settings will give the AV receiver or pre/pro enough leeway to set the final sub level correctly during its auto-setup routine. The "Bass Management Boot Camp" article about subwoofer setup that I wrote for the November S+V inspired an in-turn inspiring e-mail from reader Bruce Erwin.Bruce recalled his days setting up sound systems when he'd use a 1.5-volt battery to test subwoofer phase. Set … If you don’t know the frequency range of your speaker, use a subwoofer matching tool. 5.1 & 7.1 Surround Sound Speaker System Setup & Placement Gu... What is the Difference between a LP and EP? To … That's bad. All Rights Reserved . If there’s a bass bump at the crossover frequency, adjust the volume to match your main speaker’s output. That's with passive subwoofers, though. Add enough additional delay and the output audio wavefront cycles around and gets back in proper Phase alignment with the input electrical signal (or more properly, with the audio you are trying to match from the Main speakers). 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The "Bass Management Boot Camp" article about subwoofer setup that I wrote for the November S+V inspired an in-turn inspiring e-mail from reader Bruce Erwin. Craving Custom? The blending should sound clean and seamless. If the sub and mains are out of phase, the woofer cones on the main speakers will move backward while the subwoofer cone moves forward, and vice-versa. And all you need to do it is a piece of free software and a meter you've either already got or can get for nothing. “Pirates of the Caribbean: Dead Men Tell No Tales” Review, Bomb Squad Academy Review: A Puzzle Game and More. Calibrating your Sub. They'll cancel each other's output. They'll reinforce each other's output. Privacy Policy, How to Set the Phase and Crossover Frequency on Your Subwoofer. The Phase adjustment on the Sub works by adding ADDITIONAL delay.