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Thread: Speaker Positioning (toe-in)

  1. #1
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    Default Speaker Positioning (toe-in)

    The Ascend manual recommends that speakers be placed apart .73 times the distance of the midpoint between the speakers to the listening position. The manual also then says that speakers should be toed-in so that the tweeters point directly at the listening position, about 5 or 10 degrees. From my calculations, one would need a 21.6 degree angle to have the tweeter point directly at the listening position.

    I’ll lay out how I came to that conclusion below.

    Let’s say we sit 10 ft from the midpoint between the speakers. That places the speakers 7.3 ft apart. Divide 7.3 by 2 and add .313 ft (for half the width of the speaker), and we get 3.96 ft. Now we can use Pythagorean theorem to find out the distance between the listening position and the tweeter. That number is 10.76 ft. When we plug these 3 numbers in, the angle of the speaker should be 21.6 degrees.

    A 10 degree toe-in angle would put the listening position 22.5 ft away.

    Assuming that math is correct (I hope it is because I’ve checked it about 7 times!), which guideline should be followed more literally? Tweeters pointed directly at the listener at 21.6 degrees or a toe-in angle of 5 to 10 degrees?

    Thanks!
    Last edited by ed_bob; 11-24-2018 at 09:37 AM.

  2. #2
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    Default Re: Speaker Positioning (toe-in)

    Clearly I have a little too much time on my hands with the long holiday weekend....

  3. #3
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    Default Re: Speaker Positioning (toe-in)

    I would start with the 10 degrees, then experiment with increasing the toe in and see what you like better. Another consideration is if you have a wide listening position, like a couch. 10 degrees may just refer to the overall listening area.
    Nate

  4. #4
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    Default Re: Speaker Positioning (toe-in)

    Iím right around 10 degrees now, maybe a touch more. Due to aesthetic reasons and room constraints, my speakers are only about 5í apart, and I sit about 8.5í away from the midpoint. Iíve experimented with more aggressive toe in and found it enhanced the center image, but the soundstage suffered a bit. My listening position is a 3 seat couch, and the tweeters pretty much point right at either side of the center cushion. This seems to be a good balance between soundstage and center image but also sounds good enough when my wife and I are sitting on the couch together.

    Iím curious to hear what Dave recommends as an ideal toe in for a single listener.

  5. #5
    Join Date
    Dec 2016
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    Default Re: Speaker Positioning (toe-in)

    What specific speakers do you have? Note the RAAL ribbon tweeters Ascend uses have very wide horizontal dispersion, so varying from theoretical perfect toe-in for any Ascend speakers with ribbons should be less problematic than those with other tweeter

  6. #6
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    Default Re: Speaker Positioning (toe-in)

    I have the Sierra-2. I almost forget that Ascend makes speakers without RAAL tweeters as well, and that this manual is a general guideline for all Ascend loudspeakers.

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