Forfærde Inspicere inden for folded horn Rejse forsøg Bred vifte
PLAN Simple 18" L36 Folded Horn Subwoofer - YouTube
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Elements of acoustical engineering (1940) Elements of acoustical engineering elementsofacoust00olso Year: 1940 BOTTOM VIEW A SECTION A-A B Fig. 8.21. Folded horns. SECTION A-A' c directional characteristics of a ring shaped mouth
Exploded view of the Basic folded horn design | Stereophile.com