Room Acoustics Forum by Rives Audio Welcome! Need support, you got it. Or share you ideas and experiences.

---

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Room Acoustics Forum by Rives Audio ]

---

[ Alert Moderator ]

---

Re: First Reflection Point Formula

Posted by David Aiken (A) on May 13, 2006 at 23:01:28

In Reply to: Re: First Reflection Point Formula posted by clio09 on May 13, 2006 at 16:01:37:

"(a/a + b) x c gives me (2/2 + 6) x 7"

You read the formula as (a/a) + b which is 1 + b and that gives the answers you came up with, but that's a misread of the formula. I probably should have made it a bit clearer by writing it as follows:

[a/(a + b)] x c

so that what you're doing is dividing 2 by (2 + 6) and then multiplying that answer by 7. That gives you 0.25 X 7 or 1.75 for your dimensions.

(a/a + b) is always going to be less than 1. It's a divided by a + b. You then multiply that by c and the answer will always be less than c which is great because the reflection point has to be along the wall somewhere between a point level with you and one level with the tweeter.

David Aiken

This post is made possible by the generous support of people like you and our sponsors:

Sonic Craft

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2025, Audio Asylum, all rights reserved ]

---

[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]

---