I recently installed a new system in my 2010 Corolla, but I'm still looking to make some tweaks to it. I'm just getting back into car audio, it's been a while since I've had anything decent in my car. The biggest two things on my list right now are replacing the Head Unit and possibly switching from a ported to a sealed box. Here are the specs of my current setup.
Head Unit: Clarion CX501 Double-DIN (Thinking of Upgrading to Pioneer AVH-X4500BT)
Dash Kit: Metra 95-8204
Wiring Harness: Metra 70-1761
Steering Wheel Control: Metra Axxess ASWC
Front Speakers: Polk Audio DB6501
Rear Speakers: Polk Audio DB691
Subwoofers: 10" Infinity Reference 1062w
Enclosure: Atrend E10Dv B Box (Thinking of Switching to a Sealed Box)
Mono Subwoofer Amplifier: AudioPipe AP15001D 1500W Mono D
4 Channel Speaker Amp: Pioneer GM-6500F
I plan on doing the big 3 upgrade when I find the time and upgrading the alternator as well. I only notice slight headlight dimming when the subs hit at night, so I don't think I need another battery, the big 3 and alternator upgrade should take care of it. The mono amp I bought said I should be using a 1 farad or higher capacitor, but everything I've read has said they are worthless, so I don't think it's worth it. Additionally, a bad capacitor fried my last system, so I don't plan on buying another one unless I absolutely have to.
Some of the wiring I've used is Oxygen Free Copper, some is copper clad aluminum. For the most part, everything carrying a signal is OFC, while things like the grounds are copper clad aluminum. I don't know if the OFC wiring makes a difference or if it's just marketing hype, so I tried to use it in the places I thought it would matter.
I originally went with a ported box because the last system I installed was garbage (I was broke) and I had no idea how hard a set of nice subs would hit with a half decent amp pushing them. I'm starting to think that was a bad choice. I listen to all types of music, but primarily I like hard rock (Linkin Park, Disturbed, Rage Against the Machine, etc) and Techno (Daft Punk, Pendulum, Prodigy, Skrillex, etc). Although the subs hit really hard in a ported box, I know I would get better frequency response in a sealed box and as it is I'm not using half of what the subs can put out in their current configuration. I'm wondering if any regular dual sealed 10" box will work or if it's worth spending the money on something like the Rockford Fosgate P3-2X12 1200 Watts Dual Rms Subwoofer Enclosure. There's a big difference in price, and I'm not sure that it wouldn't be better spent in another area.
As far as the head unit goes, I've seen several great reviews on the Pioneer AVH-X4500BT. I really want a head unit that is compatible with the iPhone 5 and works well with it.
Any help or suggestions would be greatly appreciated. I wouldn't say that cost is not a concern, but another few hundred or even another grand wouldn't break the bank. I want to get this system sounding right with clean bass and the full range of sound. A lot of that has to do with tuning it right, which I'm working on, but I'm sure I've made some mistakes in the equipment I've purchased (like the head unit) or am missing some things that would help. Eventually, I may try and tighten the trunk with sound proofing to reduce rattle, but I want to get the system right first.