Electro-Voice SENTRY III
¥ 465,000 (1 unit, around late 1970 s)
Commentary
This is a floor-type speaker system that uses the same mid-range tweeter as the SENTRY IVB and has a new woofer section.
A newly designed 38 cm cone type woofer is installed in the low range.
A radial horn type mid-range with a radiation angle of 120 degrees or more is adopted for the mid-range, and 1823M is installed as a driver unit.
The ST350A, a radial horn type tweeter with a radiation angle of 120 degrees or more, is mounted in the high range.
The tweeter also has a self-resetting, purely electronic protection circuit.
The enclosure is finely tuned to the newly designed woofer, enabling playback to 10 Hz lower frequencies while reducing the size by 30% compared to the SENTRY IVB.
Model Rating
| Method | 3-Way, 3-Speaker, Bass Reflex System, Floor Type |
| Unit | For low band : 38 cm cone type For Middle Range : Horn Type (1823M) For High Range : Horn Type (ST350A) |
| Frequency characteristic | 40 Hz to 18 kHz ± 3 db |
| Output sound pressure level | 94dB/W/m |
| Impedance | 8 Ω |
| Maximum allowable input | 50W (long average) 500W (peak) |
| Crossover frequency | 400 Hz, 3.5 kHz |
| External dimensions | Width 724x Height 876x Depth 521 mm |
| Weight | 70.8kg |