What is the 83% rule for speaker placement?

It’s not uncommon for audiophiles to get lost in the world of high-end equipment, spending thousands of dollars without ever reaching the end of their quest for the perfect soundstage. The reality that so many audiophiles forget is that no matter how good your equipment is or how many cool new audio gadgets you’ve upgraded your music setup with, the basic physical factors of an audio setup can be as important to sound cohesion as the brand of your speakers. This means it’s essential to plan where you and your speakers are positioned in a room to get the most out of your audio experience.

According to audio expert, consultant and author Jim Smith, the golden ratio is determined by the distance between your speakers and where you are listening from. Smith, best known for this book (and his imprint) “Get Better Sound”, suggests that the distance between your speakers should be equal to 83% of the distance between you and the midpoint of the plan between those speakers. Although not a hard and fast rule, Smith uses this initial 83% measurement as a benchmark when doing new installations and then adjusts from there.

Simply put, the 83% rule measures two distances in a two-speaker setup. The first measurement is the distance between your speakers. The second imagines the plane between the speakers as a flat line and measures the distance from the middle of that plane to where the listener will be seated. The positioning forms a triangle, with the two speakers and the listener as the points of the triangle.

Smith recommends using the clew as an anchor. With this set, you can start by finding the optimal position for both speakers and then make fine adjustments. The reason the ruler works is basic acoustics. If the speakers are placed too far away, the stereo image may sound accurate but disconnected, and the low mids may not blend in as naturally (Smith describes setups where the distances have formed an equilateral triangle, which he says results in a technical sound but boring musical presentation). If the speakers are too close together, the presentation can collapse inward and lose width, and presentation is key, even if you’re only using Bluetooth speakers in your home gym.

To set up your own space according to the 83% rule, you need to start with the equation X/Y=0.83, where the distance between your speakers is the X value and the listening distance from the midpoint is the Y value. From there, it’s just simple math. For example, if your speakers are spaced 10 feet apart (representing X), then you would multiply that number by 0.83 to see that your optimal listening location is approximately 8.3 feet (Y) from the midpoint.

Of course, in small rooms where this rule is not possible, manual setup may be necessary to achieve perfect sound. Also be sure to account for toe-in, which is the angle at which you turn a speaker to face the listener(s). Once the spacing and seating is roughly in place, you can tilt the speakers inward and make small adjustments until the voices come into focus and the presentation begins to sound musical rather than analytical. And while you’re setting up your rear speakers, don’t forget to check out the best soundbars you can buy in 2026.