An Efficiency Constant Comparison Between Low-Frequency Horns and Direct-Radiators

Keele J,DB(. An Efficiency Constant Comparison Between Low-Frequency Horns and Direct-Radiators. In: AES Convention 54. Audio Engineering Society; 1976. Paper 1127. Available from: https://aes.org/publications/elibrary-page/?id=2287

@inproceedings{Keele1976_2287,
  author = {Keele, Jr., D. B. (Don)},
  title = {{An Efficiency Constant Comparison Between Low-Frequency Horns and Direct-Radiators}},
  booktitle = {AES Convention 54},
  note = {Paper 1127},
  year = {1976},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=2287}
}

TY  - CPAPER
TI  - An Efficiency Constant Comparison Between Low-Frequency Horns and Direct-Radiators
AU  - Keele, Jr., D. B. (Don)
T2  - AES Convention 54
M1  - Paper 1127
PY  - 1976
DA  - 1976/05/06
UR  - https://aes.org/publications/elibrary-page/?id=2287
PB  - Audio Engineering Society
LA  - en
AB  - Evaluation of the efficiency constant for exponential horns reveals that the horn is quite wasteful in its use of enclosed volume when compared to direct-radiator systems. The main advantage of horns lies in the realizability of rather high efficiencies in the 10% to 40% range which is beyond the capabilities of most direct radiators. Use of direct radiators in arrays increases the low frequency efficiency but not without a decrease of high frequency bandwidth. The areas discussed in this paper are illustrated by comparative experimental measurements on three low frequency systems: 1) A dual driver front loaded folded horn, 2) a single driver direct radiator vented-box system, and 3) a four-driver vented-box system consisting of a 2x2 array of a single driver system of item #2.
ER  -