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Crossover 101 - Page 3 Graphic 5: Two-way 2nd Order 800 Hz Graphic 6: 3rd Order Low Pass Filter Phase Shift = -270 degrees (Note: graph indicates that Phase went to -180 degrees and wrapped around or continued thru another 90 degrees) Graphic 7: 3rd Order High Pass Filter Phase Shift = +270 degrees Graphic 8: Two-way 3rd Order 800 Hz Graphic 9: 4th Order Low Pass Filter Phase Shift = -360 degrees Graphic 10: 4th Order High Pass Filter Phase shift = +360 degrees What is Constant Directivity Horn EQ? Constant Directivity high frequency horns require a special form of equalization that permits them to exhibit proper high frequency response. In this article we will explain the need for the high frequency compensation known as CD horn EQ. The current Peavey models RX-22 and 44XT compression drivers require this form of high frequency equalization when used on our constant directivity high frequency horns, or for that matter, any manufacturers constant directivity high frequency horn. Page 1 | Page 2 | Page 3 | Page 4 | Page 5

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