In the spec sheets of the 4425, JBL write that they used a "All Pass Crossover Network".
What exactly means that?
Where can I get the Audio Eng. Soc. Article about it (vol28 pp575-584)?
Does anybody have the Audio Eng. Soc. Article about Bi-Radial monitor loudspeaker design (vol31 No. 6 June 1983)?
Thanks for help