Ok Quarter Wave Question Need Some Answers


Silver Member
Username: Insearchofbass

Post Number: 725
Registered: Jun-04
ok i took this from a website giving the equasion for quarter wave theory for maximum wave heres his example for 40 hz. (below) Then i did one for 36 hz because i remembered another box i had tuned to 36 hz and the fact that it was two 4 inch ports 9.8 inches deep and i came out with 93.96 inches (basically 94 inches) for quarter wave for that note. now my question is if i was that far off from first quarter wave could that seriously effect my output spl wise? (id assume so) Thoughts appreciated on this.

(1128 ft/sec)/(40 1/sec) = 28.2 ft
Since the maximum amplitude of a sine function occurs at the first quarter...we will take 28.2/4=7.05 (roughly 7 ft or 84 inches)
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