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SVS Image - 4 Reasons to Go With Dual Subs
If you’re in the market for a subwoofer, going “dual” can be a great option for a number of reasons. In this article the SVS Sound Experts explain why.

Reason 1: The first reason to go dual is to reduce the chance of phase cancellation, which occurs when two sound waves from a single home theater subwoofer cancel each other out, reducing the bass you hear. This happens when there is a delay between sound waves reaching your ears directly from the subwoofer and those bouncing off a wall or other room surface and reaching your ears an instant later. A single subwoofer is often at the mercy of a room, but dual subwoofers take control of the room with effortless, accurate bass.

Reason 2: The second reason to go dual is increased headroom. The combined power of dual subwoofers working in tandem results in greater dynamic range and deeper, more impactful low frequency effects that you can not only hear, but feel in your chest, your pant legs and elsewhere.

Reason 3: The third reason to go dual is because it makes the subwoofer harder to localize. Even with a fairly deep speaker/subwoofer crossover frequency, it’s often possible to tell where a single subwoofer is placed in the room, particularly if it is not located on the front stage. In comparison, dual subwoofers are nearly impossible to localize. Once listeners experience this immersive bass which seems to emanate from everywhere in the room, they never want to go back to a single subwoofer set-up.

Reason 4: The fourth reason to go dual is when décor and aesthetics are a factor since two smaller subwoofers are often easier to place and conceal, and because the combined output often exceeds that of a single larger subwoofer.

Once you’ve decided to go dual, the ideal placement is generally in opposite diagonal front and rear corners, but they can also be placed along the same front or side wall, or elsewhere, depending on your room’s layout.

Installing dual subwoofers is one of the easiest upgrades you can make to your audio system or home theater, and it can be the most impactful way to achieve accurate, room energizing bass.

For a deeper read on the subject, check out the “Why Go Dual” article on the SVS site and browse their subwoofer selection at Happy Listening!
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SVS-Prime Tower SB2000 Piano gloss
Placement of subwoofers is a process driven by competing variables that differ in every home. Décor, floor space, furniture, speaker placement, seating location, and of course, sound quality all factor into the decision of where a subwoofer should be placed. If you have flexibility, there’s an artistry to subwoofer placement that can be aided by understanding some basic acoustic principles and set-up techniques.

To help you with subwoofer placement in a 2.1, 5.1, 7.2.4 or any other audio set-up, the Sound Experts at SVS offer these – 5 Tips for Finding the Best Location for Your Subwoofer(s):

Try a Front Corner First – Corner placement generally does the best job of exciting all possible room modes, resulting in a denser wave pattern in the room. While this can often make for hugely impactful bass, it can sometimes result in a “boomy” sound depending on your listening position.

Do the Subwoofer Crawl – If you still find excessive peaks or nulls in your listening position, you can set-up a subwoofer in the prime listening spot in your room, literally the exact spot you would normally sit when listening to your system. Then play a recurring bass line or test signal and crawl around so your ears are at the same level as the subwoofer would be. Wherever the bass sounds best during your crawl is the best location for your subwoofer. For a more detailed description, please visit the SVS art of subwoofer placement tutorial.

• Use EQ to Fight Dead Spots – Many AV receivers offer auto-EQ for all speakers, including the subwoofer and will automatically adjust output for standing waves or room anomalies. If not, there’s several affordable external EQ systems available for shaping your subwoofer’s performance to accommodate your room.

• Consider Going Dual – Two small subwoofers can be easier to place than a single larger subwoofer in many rooms. You also get the advantage of increased sound wave density in the low end and a smoother frequency response at more listening positions in the room. Plus, two subwoofers will not have to work as hard for the same acoustic output as one larger subwoofer.  

• Be Flexible With Listening Location – If your situation only allows for the subwoofer to reside in a single location with no compromises, that’s OK. Sometimes moving seats just a few feet can make a big difference and move your ears out of a peak or null and into a neutral sounding location.

Once you’ve decided on a location, many subwoofers have sophisticated DSP amplifiers that allow you to optimize the in-room performance with incredible precision. If you are interested in a deeper dive into Subwoofer DSP, check out this SVS Sound Experts blog post: Understanding DSP – Unlock the Full Power of Your Subwoofer.

If you’re ready to experienced deep, accurate, mood altering bass, SVS offers sealed and ported subwoofers in a range of sizes and finishes, for all home theater and audiophile set-ups.



What Makes a Great Subwoofer 5 Key Performance Attributes

Adding a subwoofer can be the most impactful upgrade you can make to the performance of an audio system or home theater. But a truly great subwoofer adds dimensions of impact, excitement, and low frequency extension without negatively impacting the overall accuracy and believability of the system’s sound. Here are five key attributes all of the best subwoofers must possess.

  1. Have outstanding low frequency extension – This seems obvious, but many subwoofers don’t have the ability to reproduce the deepest bass, so attempt to make up for it by exaggerating the mid-bass performance to address the deficit. A great subwoofer is capable of delivering all the low frequencies in the content being played, sometimes at frequencies so low they can only be felt, not heard!
  2. Be able to produce those low frequencies at the highest sound pressure levels (SPLs) – A great subwoofer plays effortlessly loud and distortion free, no matter how demanding the source material.   Lesser subwoofers use amplifier limiting to cap output, resulting in the bass “disappearing” when the listener turns up the volume past conversational levels.
  3. Be accurate in terms of frequencies produced, and NOT produced – A great subwoofer adds no sonic signature and is completely faithful to the source content delivering the bass notes or low frequencies exactly as the artist or director intended. Lesser subwoofers deliver boomy “one note” bass that is never convincing or enjoyable.
  4. Have speed and control in transients to stop and start reproducing bass according to the actual program content – A great subwoofer has speed in musical or cinematic transients so as to keep pace with the content. Lesser subwoofers can’t keep up with the content or the full range speakers, making the overall system sound smeared and undetailed.
  5. Blend seamlessly with full range speakers – Subwoofers are great, but in order to function properly they must be a seamless part of the overall sound of the system, never drawing attention to the bass alone.

From strumming bass guitar riffs and drum beats to the most complex and demanding movie sound effects, a great subwoofer reveals deep layers of sound a speaker is simply not equipped to handle. And while some subwoofers merely add bass, a truly great subwoofer elevates the listening experience in a unique and visceral way.

If you’ve never experienced this level of performance, SVS offers a 45 day in-home trial with free shipping both ways, so you can judge for yourself, in your own home, how dynamic and impactful subwoofer sound can be.