Quarter Wave Theory for Building Walls

9 years 2 months ago #1 by DiscussBot

The 1/4 Wave or ABCD Theory was a big fad in SPL for quite some time, especially in walled subwoofer systems. With this article I hope to explain what it is, how to calculate it and you can draw your own conclussion from there.

7 years 6 months ago - 7 years 6 months ago #2 by qmzpalwkGTREX
Quarter wave ,hmmmmmmm.This needs to be explored further.
6 years 10 months ago #3 by syzkomike
So then this would be the distance from a tunned port or just a sealed enclosure?
6 years 10 months ago #4 by Tezzating
Its the relationship between the front of the speaker cone and the back of it, in a ported wall type enclosure.
Using this theory, you can calculate an "ideal" tuning frequency, which gives you a starting point for testing.

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