ResonantLive Sound Archive

Equipment file · Ring-radiator horn tweeter

075 bullet tweeter

JBL · 1950s–1960s

Evidence status · documented

Identity and core specifications are documented; some historical fields remain unavailable.

The JBL 075 'Ring Radiator' is a compression driver with a 1-inch phenolic ring diaphragm feeding an annular throat into a solid aluminium horn. JBL's brochure presents it as a high-frequency reinforcement for extended-range drivers such as the [[jbl-d130|D130]], crossed over at 2,500 Hz.

Introduced
1950s–1960s
Category
Ring-radiator horn tweeter
Intended use
High-frequency add-on for cone loudspeaker systems
Production
JBL, to 1973; succeeded by the 076

Equipment photographs · 1

JBL 075 ring-radiator tweeters

1 / 1 · JBL 075 ring-radiator tweeters

JBL 075 ring-radiator tweeters·Jacques from Cape Town, South Africa·CC BY 2.0

Why it mattered

  1. 01

    It gave smooth high-frequency output for upgrading JBL cone systems.

  2. 02

    It was used as the top end of many JBL-based PA and theatre systems in the 1960s and 70s.

Engineering record

Diaphragm and magnet
1-inch phenolic diaphragm, Alnico magnet[1]
Crossover
Minimum 2,500 Hz via the N2600 network[2]

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

No named deployment could be tied to this exact item by a checked source yet. Know of one? Suggest it on the contribute page.

Manuals & original documents

Sources

  1. 1JBL 075 Speakers — Specs & HistoryVintage Technology Archive · reference
  2. 2JBL Signature Model 075 High Frequency Ring RadiatorJames B. Lansing Sound · brochure

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