If you're tweaking crossovers you really should think about getting a mic to measure exactly what the drivers are doing. You can get setup with a good test mic, like a Behringer ECM8000, mic preamp, and cables for about $150 and possibly e able to use the sound card in your PC. I went ahead a bought a USB external Sound Blaster card for $50 so I can use it with my PCs or laptops. You could also use a cheap Radio Shack meter, but it's not as accurate. You can download Room EQ Wizard for free and that's good enough to get reliable results.
What I've recently done is to use the mic to measure at my normal listening position. I thought I was going to need to do major changes in my crossovers. As it turned out I was able to get very good results throughout the frequency range just by adjusting speaker, and even driver, locations in the room.
Another great tool I found, also free, is a circuit modeling software called Micro-Cap. They have an eval/student version you can download and it will handle circuits up to about 25 components. Plenty good for xovers. It's is very intuitive to use. You build the circuit with elements from the library, supply their values, label the nodes you're interested in, and have it run the analysis. Micro-Cap runs on top of Pspice so it's about as good as it gets.
Measurements can't tell us everything, but they do take the guesswork out of this. You'll cut down a lot of iterations and quickly pay for the mic, preamp, and cables in savings on all those coils and caps you would need to do trial and error.
What I've recently done is to use the mic to measure at my normal listening position. I thought I was going to need to do major changes in my crossovers. As it turned out I was able to get very good results throughout the frequency range just by adjusting speaker, and even driver, locations in the room.
Another great tool I found, also free, is a circuit modeling software called Micro-Cap. They have an eval/student version you can download and it will handle circuits up to about 25 components. Plenty good for xovers. It's is very intuitive to use. You build the circuit with elements from the library, supply their values, label the nodes you're interested in, and have it run the analysis. Micro-Cap runs on top of Pspice so it's about as good as it gets.
Measurements can't tell us everything, but they do take the guesswork out of this. You'll cut down a lot of iterations and quickly pay for the mic, preamp, and cables in savings on all those coils and caps you would need to do trial and error.