High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place.

---

[ Follow Ups ] Thread: [ Display  All  Email ] [ High Efficiency Speaker Asylum ] [ Return to Search Results ]

---

[ Alert Moderator ]

---

On apparent discrepancies between mouth size and reported response of bass horns

Posted by PK (A) on January 11, 2003 at 03:04:56

Hi,

As far as I understand bass horns – which is not very far - their response should drop like a rock below their cutoff frequency, constrained, at least partly, by the size of the mouth of the horn calculated by the folowing formula:

Afm = (1/ [SF x 4π]) x (c/ F0 ) ^2

However, when I look at the mouth size of a range of respected bass horn designs (e.g., LaScala, Maya Horn, Edgarhorn Titans [not the sub, but the mains], Rog Mogale’s folded bass horns, etc.) The mouth size of these horns appear to be to small in order to obtain the response actually claimed by their manufacturers – even if they were positioned against a back wall (SF = 4).

Please understand, I do not doubt the claimed responses; these manufactorers knows an awfull lot more about horn than I do, and I am sure their claims are justified, but I simply do not understand how these (and other) bass horns are able to obtain a solid response down below their cutoff estimated by the mouth size. What have I missed? I just want to learn about these matters. I thank you a lot in anticipation and look forward to hear from you!

Regards
Peter

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

Parts Connexion

---

[ Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2024, Audio Asylum, all rights reserved ]

---

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

---