so i have a infinity ref tweeter(4ohm) and mid(4ohm)... right now i have 50uf 100v on the mid and on the tweeter 6.6up 100v and a 10w 10ohm resistor in parallel with the tweeter... is this correct???

justin

 

Why don't you just use a passive crossover that came with the component set? It looks so much cleaner and less complicated to wire up.

 

Not really. You would want a coil in parallel with the woofers + lead, a .16mH coil on the mid puts you at 6K (6000 Hz) which is where the 6.6uf cap will put you at on the tweeter (6,000Hz and up). The setup you have now only lets the mid play 800Hz and above, your missing out on a HUGE band of frequencies in the mid-bass. Honestly, I would recommend purchasing a 2 way crossover, you can find them on ebay all day long. The crossover point should be around 3.5-4KHz, and a 12db corssover is better, you are currently runing a 6db setup with just a capacitor on each speaker. Crossover desighn is a tricky thing, but if you want, I can give you some links that will help you wrap your brain around it.

Do you have any subs in your system? If so, you want the mid to play from 80-100Hz and up (high pass), if not, run them into the basement.

Kirk R

 

this is my setup... powerbass xa1500d 2 3xl12d (5cu ft ported box at 35hrtz) Jl e4300 infinity 6.5 comp set in ft doors, 6.5 nakamichi coax in rear... n a pioneer deh-5000...

 

You should purchase a set of x-overs, 12db per octave 2 way. I have a few sets if you need one.

Kirk R

 

this is what i want to do...... i want to make my 4ohm tweeter and 4ohm mid into a 2ohm load and still have a resistor on the tweeter so it will not be as loud...

how can i do this???

 

That wont do you any good, any additional power supplied by the amplifier in a 2 ohm load will be lost in heat thru the resister that will give you a 2 ohm load, and quality load resistors are not cheap. If you want a 2 ohm load, best way to get it is to ad a second pair of matching mid-bass drivers in the rear off of the same channels, this will give you a 2 ohm load for the mids, but the tweeter will be slightly attenuated (4ohm tweeter, 2ohm mid load). The only problem is you will have little control over the rear mid vs. the front.....the joy of system design

I would consider just running a set of two way 12db x-overs on the current set you have, and run with it. Remember, a crossover designed for a specific frequency at 4 ohms will be drastically different at a 2 ohm load (twice as high freq @ 2 ohms vs. 4).

Kirk R

 

Ditto the above^^^, get a set of passive x-overs with tweeter attenuation.
Better yet, get a 4ch amp with good built in electronic x-overs, two channels for the tweeters and two for the mids. 94