I need some help on tuning my subs and frequencies

[darksparkz]

Okay, in my 97 Camry LE, I have the following:

CDT EF-61 w/ 1" silk dome tweets
Aura RPM2000 150Wx2
Alpine CDE-9852 w/o sub preouts
Alpine 12" Type-R SWR-1242D RMS is 500W, peak is 1500W, dual voice coil 4-ohms
Infinity ref1600a 400Wx1 @ 4-ohms
Some Q-Logic 12" vented/sealed enclosure 1.25 cu ft@ 35hz according to specs.

My Aura amp powers my front CDT comps, and the Infinity mono block powers the sub. My rear speakers are just powered by HU, but I turned them off now.

My Aura amp runs directly to the HU and to the battery, but now my infinity amp is powered directly to the battery and takes the 'output' connections from the Aura amp for sound.

My Aura amp has settings for HP, LP, and full, of course I set it to HP now because I have a sub, correct? My Infinity amp does not have those settings, it only has 10db bass boost and gain settings and lp frequency, ranging from 32hz to 320hz

My HU has settings that allow me to change bass and treble frequencies.

Now, I need some helping setting frequencies for everything. The infinity amp only pushes out 400W@4ohms RMS, while my alpine requires 500W@dual 4-ohms, does that mean I'm technically only powering it 200W@dual 4-ohms? Should I set the infinity amp to full output and bass boost, because it's not going to distort because it's not getting much power anyways.

What should my LP settings on my infinity amp be at? 80hz? What about frequencies for my alpine HU for bass (1 (narrow) to 4(wide), and freq @ 60hz, 80hz, 100hz, 120hz) and treble(7.5khz, 10khz, 12.5khz, 15khz)? The type of music I typically listen to ranges from techno, trance, and some r&b and rap.

Last one, also, I'm supposed to point the sub to the rear of the car and closer to the rear of the car too right?

I know this is a tough question to answer, and most would just say play around with it, but what's a proper setting for an round about answer?

Thanks a lot for your help!

[Corollacrazy42]

You can leave your Aura on Full if your using passive crossovers. If not you need a to be able to control the freq. going into both the tweeter and the midbass (either through the headunit or an external crossover)

You don't wanna run your amp on full tilt or full bass boost also. Ruin your amp very quickly... LP on the amp should be at around 80, but if you have that set you have no need for the headunits crossover. If you do decide to use the headunit as your crossover, make sure you put the sub amp to full otherwise your double crossing. Also... You shouldnt have treble running to your sub...?

Pointing to the rear is best... not so sure about having it as close to the back as possible but just move it around to see where it sounds best.

[darksparkz]

Well, what I meant for treble and bass settings on the HU is meant for just the overall settings.

So if I set the LP on the sub's amp, I just leave the treble and bass frequencies on the HU at default? What about bass bandwidth, ranges from 1 for narrow to 4 for wide?

Edit: Also, is there any problem due to me running my infinity amp from the outputs of the aura amp's RCAs? My HU doesn't have a sub preout, so would it be better just to re-route my infinity amp RCAs straight to the HU?>

[Corollacrazy42]

Well I've never really seen anyone run the rcas from the other amp... but I suppose it is possible if it is actually working.

Bassbandwidth you can just play around with to see what you like best.

Do you just have the stock HU? That will help me to be able to answer your question.

[darksparkz]

No, I have an aftermarket Alpine CDE-9852