ResonantLive Sound Archive

Equipment file · Bi-amplified studio monitor

4350 monitor

JBL · 1973

Evidence status · documented

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

The JBL 4350, announced in January 1973, was a four-way, bi-amplified monitor with two 2230A 15-inch woofers, a 2202A 12-inch low-mid driver, a 2440 compression driver on a horn and lens, and a 2405 ring tweeter, quoted at 30 Hz–21 kHz ±3 dB.

Introduced
1973
Category
Bi-amplified studio monitor
Intended use
Monitoring and mixdown
Production
JBL

Why it mattered

  1. 01

    A reference monitor of 1970s studios built for high-level mixing.

  2. 02

    Its bi-amped horn-and-cone design shared drivers with JBL's touring systems.

Engineering record

Drivers
Two 2230A 15-inch, 2202A 12-inch, 2440 compression driver on 2311 horn/2308 lens, 2405 tweeter[1]
Crossover and response
250 Hz electronic and 1,200 Hz passive crossovers; 30 Hz–21 kHz ±3 dB[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

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. 1Pro-Note Vol. 1, No. 6: New Monitor On The WayJames B. Lansing Sound · brochure · 1973-01
  2. 24350B InformationJBL Professional · technical paper

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