This isn't the crossover you are looking for, then.

You need to design one with a highpass or bandbass for midrange, and a highpass for the tweeters.

It is the one that came from Alpine and currently works with my SPX-137R Component setup. I just want to duplicate the crossover. There is no lowpass on this crossover it is a bandpass and highpass setup.

 

Originally Posted by thatoneguy
Correct instructions for inductors from manual (value and wire gauge)

Identical cores, Look like what is shown in your photo: 3/4" inside diameter, 1/2" tall, 18ga Enameled Wire:

0.10mH - 72 turns, 16.5 ft wire, Est Resistance 0.12 Ohms
0.18mH - 95 turns, 23.5 ft wire, Est Resistance 0.16 Ohms
0.25mH - 110 turns, 28 ft of wire, Est Resistance 0.20 Ohms
0.32mH - 123 turns, 32.5 ft of wire, Est Resistance 0.23 Ohms

Again, the 1.5Ω/10W Resistor should be mounted above the board about 1/2" for air circulation, the bottom side of the board is discolored due to that resistor overheating.

I just need to know which core does what freq.? You suggested the .18 and the .32 earlier I believe.