Electro-Voice (EV) Sentry III speakers (ad, Dec. 1973)

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If they danced in the recording studio, what will they do at home?

We’ve gone about the serious business of designing the best possible loudspeaker for professional studio monitor use. With computers and anechoic chambers and all the rest. And, having gained a basic new insight into bass speaker performance, we've come up with what looks like a winner. The Sentry III.

We've run all the curves that prove, in a most scientific, sober fashion, that the system is really quite good.

We've got pole graphs, and frequency response curves, distortion measurements, total power output curves, power handling test resifts, and SPL data galore.

But what happens when we demonstrate the Sentry III? Leading to divulge--but they are top men) leap about in their control rooms DANCING for heaven's sake! Snapping their fingers and feeling the sound, and reveling in the sensory pleasure of a clean first octave. And last octave too, for that matter.

And they run from one side of the studio to the other trying to find holes in the distribution of the highs ... and they can't ... and they LAUGH! It's very unseemly (but secretly quite gratifying). So we try to thrust our good numbers and graphs at these serious engineers, but they'd rather listen and compare and switch speakers. And make rude remarks about their old monitors, music lover will stand still long enough to heed our technical story.

Perhaps you, as a serious-minded music lover will stand still long enough to heed our technical story. And appreciate that the very same sonic virtues that intoxicated these recording engineers have an honest place in your home. Especially when your goal is music reproduction at or near original concert levels.

In fact, several recording engineers have ordered Sentry III speakers for their own living rooms. Some with the accessory equalizer that extends response to 28 Hz.

Please write for our technical explanation of the Sentry III. You'll also get the select list of dealers who have been entrusted to demonstrate this remarkable speaker. Pay one of them a visit ... and bring your dancing shoes.


The New SENTRY III Monitor Loudspeaker

SENTRY III. Frequency Response. 40-18 000 Hz + 3 4B; Sound Pressure on axis at 4' with 50 watt input, 113 dB; Dispersion, 120° horizontal, 60° vertical; Size 28 x 20 D x 34 ½ H; Weight, 150 lbs. $600.00 suggested resale net. SEQ active equalizer extends response to 28 Hz +/- 3 dB. $60.00.

ELECTRO-VOICE, INC., Dept 1234A, 602 Cecil St., Buchanan, Michigan 49107 USA


(Audio magazine, Dec. 1973)

Also see:

Electro-Voice (EV) speakers (Mar. 1972)

Electro-Voice speakers (ad, Mar. 1973)

Electro-Voice Interface:A speaker (Mar. 1976)

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Updated: Tuesday, 2020-01-14 14:25 PST