Equipment photographs · 1
1 / 1 · JBL D30085 Hartsfield corner-horn system, circa 1957
JBL D30085 Hartsfield corner-horn system, circa 1957·Harman International, courtesy Mark Gander and John Eargle·© Harman International; used for identification and historical commentaryWhy it mattered
- 01
It applied the corner-horn principle of the Klipschorn with JBL drivers.
- 02
It is a hi-fi crossover, included here because its drivers came from the same lineage as JBL's professional horns.
Engineering record
- Loading
- Folded horn-loaded 15-inch woofer, using corner placement to extend the bass horn[1]
Original pricing
No reliable period price located
2026 equivalent
Not calculated without a reliable original price.
Public price evidence was not sufficient to publish a defensible original figure.
Use in the field
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Manuals & original documents
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