This is a really old article, and still relevant and covers this false notion about the perfection of 6db crossovers... https://www.passlabs.com/technical_article/phase-coherent-crossover-networks/ |
Physics and electrical engineering does not change suddenly because you don't own a speaker company. I don't own a speaker company, but I likely know far more about truly advanced active speaker design than David, Richard and John combined. Pass has done extensive measurements with his amplifiers driving real speakers, so his body of knowledge extends well beyond just the terminals on the back of his amplifiers. |
John Dunlavy also said this, Dunlavy: That's right. You can go one way but not the other. Flat on-axis response provides very poor correlation, in general, with what you hear. On the other hand, if you have near-perfect impulse and step responses, it follows that you must also then have from that a near-perfect frequency response on-axis. And using a first-order crossover network is the only way you can achieve accurate impulse and step responses. As soon as you go to a second-order crossover, the impulse response is hideous. And as Toole proved when at Harman, a flat on-axis response was absolutely critical to how well a speaker will be considered to sound. |
