ResonantLive Sound Archive

Equipment file · Processor-controlled loudspeaker lineage

M3D precursors / processor-controlled systems

Meyer Sound · JM-3 in the 1970s; M3D around 2000

Evidence status · verified

Claims in this file are tied to item-specific sources.

Loudspeaker and dedicated control electronics treated as one calibrated system.

Introduced
JM-3 in the 1970s; M3D around 2000
Category
Processor-controlled loudspeaker lineage
Intended use
High-level touring reinforcement with calibrated control electronics
Production
1970s onward in successive systems

Why it mattered

  1. 01

    Treated loudspeaker and corrective electronics as one engineered system.

  2. 02

    The lineage led from external analog correction and alignment toward self-powered arrays with integrated processing.

Engineering record

Early alignment
The 1977 JM-10 used co-planar low/mid geometry and analog delay to align high-frequency arrivals.[1]
M3D integration
M3D combined amplification, processing, high-frequency manifold design, and low-frequency directional control in one line-array element.[2]

Original pricing

No reliable original system price located

2026 equivalent

Not calculated without a reliable original price.

This profile spans several generations rather than one retail configuration.

Use in the field

McCune Sound used the early JM systems for festival stages and Oakland Coliseum-scale work.[1]

Manuals & original documents

Sources

  1. 1Development of the McCune JM-3ProSoundWeb · reference
  2. 2M3D data sheetMeyer Sound · brochure

Contribute to the record

Know more about M3D precursors / processor-controlled systems?

Corrections, firsthand information, original documents, and credited photograph sources are welcome.

Your email is private and will not appear in the archive. Contributions are not published automatically.

Back to all equipment Back to The modular touring machine

Help build the archive

A missing piece? A correction?

Contribute to Resonant
Support the archiveVenmo@mercer-aplinCash App$MercerAplinHow it’s used