I never reccomended the Diamond Hex's, they're JUNK!!
No just playing, they're good, but I don't take credit(or blame
) for the rec., I just rec. components over coaxials. But yes they will in fact tear the Polks a new one.
If you want to wire active, you will want to use the onboard crossovers in the headunit, not the amps. It is pretty complicated, are you sure you want to go active? It can take many hours to set it up right, but it can yeild better results. But you do have a very capable headunit for it.
Do you still have the manual for the cd player? If so, re-read it, especially the part where they talk about setting it up in 3 way mode.
Basically you are going to want to wire the front channels of the amp to power the tweeters. And the rear channels to power the mids. Wiring is quite simple. You will not be using the passive crossovers supplied with the component set.
The tricky part is setting up all the right crossover points, slopes, where to set the eq's, then you have to play with time alignment. It can be very time consuming and mentally challenging, but you seem smart enough to grasp the concept.
The RCA connections from the headunit to the amp should be the same as you have now. Front RCA's to front channels of the 4 ch amp, rear RCA's to the rear channels of the amp. Sub channel to the sub amp.
You need to put the headunit into 3 way mode. Now I'm not too familiar with Alpine headunits, but I THINK you might have a switch in the back of the headunit that you will have to switch over. I could be wrong though. Read your manual(STUDY you manual and take notes)
Now these crossover points I'm going to give you are in general. You need to listen to what sounds best to your ears and go from there.
Quick terms....HPF High Pass Filters, Allows freqencies above this crossover point to play through. (High Pass)
LPF, opposite of HPF, allows lower frequencies to pass through its given crossover point.
Bandpass. This is what you get when you set the HPF and LPF for the mids, you get frquencies between these two crossover points.
Tweeters- HPF on, set to anywhere from 2Khz to 3.5khz. Gotta find the sweet spot where the tweeters aren't playing too low to distort, and not too high to where the mids won't be able to cover the gap in frequencies between the mids and tweeters.
Mids- Mids are a little trickier. You have to set both HPF and LPF. HPF 60-90 HZ, give or take. You want to set the HPF so that the mids aren't playing so low that you will have distortion. Lower frecencies are for the subs. But you want you front speakers to play as low as the can(cleanly). This helps so that you can't localize the subwoofers. You want the mids to blend well with the subs so that it sounds like it's all coming from the front.
Mid-LPF ON 2khz-3.0khz, again you gotta play with these figures and see what sounds best. You don't want your mids straining to play the higher frequencies.
You also need to set the crossover slopes (db) You may want to talk to Klaymen333, i know he has experience with wiring Diamond Hexes active, he can probably help more than I can since he has hands on experience with those drivers.
Linear Mode
