ResonantLive Sound Archive

Equipment file · Studio monitor loudspeaker

Sentry III

Electro-Voice · 1973

Evidence status · documented

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

Electro-Voice introduced the Sentry III in 1973 as a three-way monitor with a 15-inch woofer and radial-horn midrange and tweeter, advertised as computer-aided and anechoically tested, with 40 Hz–18 kHz ±3 dB response.

Introduced
1973
Category
Studio monitor loudspeaker
Intended use
Studio monitoring and hi-fi
Production
Electro-Voice

Why it mattered

  1. 01

    It extended EV's widely used Sentry monitor line.

  2. 02

    It represents studio engineering running alongside 1970s touring PA.

Engineering record

Drivers
15-inch woofer, 1823M radial-horn midrange, ST350A radial-horn tweeter[2]
Response
40 Hz–18 kHz ±3 dB, extendable to 28 Hz with an equaliser[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

No authoritative manual or original document has been located for this profile.

Sources

  1. 1Electro-Voice Sentry III advertisementAudio (via gammaelectronics.xyz) · brochure · 1973-12
  2. 2Specifications of ElectroVoice SENTRY IIIaudio-database.com · reference

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