Electro-Voice Centurion IV Loudspeakers [Specifications and Instruction PDF]

The Electro-Voice Centurion IV and Senior Centurion IV employ identical cabinetry, and differ only in the driver components. The Centurion IV uses the Model 117 system consisting of a 15BWK low-frequency driver, 847HF mid-range coaxial driver, T35B Super-Sonax VHF driver, X336 crossover network, Cable harness and two AT37 level controls. The Senior Centurion IV uses the Model 105 driver components consisting of the 15WK low-frequency driver, 848 HF coaxial mid-range assembly, T35 Super-Sonax VHF driver, X336 crossover network, two AT37 level controls and a cable harness.



The Centurion uses the exclusive Electro-Voice "W" type folded horn. The "W" horn is a single path indirect radiator utilizing the room corner. The completely sealed rear cone air load is used as an acoustic compliance to resonate with the inductive mass of the air in the horn throat, forming a broadly tuned low-frequency resonant circuit which extends and augments the lower bass spectrum of the loudspeaker. Because of the relatively small number of parts, and short length of the horn, efficiency is very high, and radiation in the low-bass and important mid-bass regions approaches that theoretically possible from a perfect horn.

The Centurion is a corner horn type enclosure, and for best reproduction should be placed in a corner situation. The Centurion may, however, be used along a side wall if an artificial corner is constructed behind it. Such a corner should be of a minimum height of 40 inches and have minimum side wall lengths of 4 feet intersecting at 90" behind the loudspeaker. Response of the Centurion is enhanced by more than 6 dB below 200 cycles when used in a corner.


Specifications

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Senior Centurion IW
Sensitivity Rating: 48 db

Power Rating:
Program: 20 watts
Peak: 40 Watts

Size: 40 in. high, 30 in. wide, 22% in. deep
Shipping Weight: 94 lb
(54 lb. Centurion Cabinet only)

Centurion IW
Sensitivity Rating: 51 db.

Power Rating:
Program: 35 watts
Peak: 70 Wolts

Size: 40 in. high, 30 in. wide, 22% in. deep
Shipping Weight: 132 lb
(54 lb. Centurion Cabinet only)

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