Admittedly Bob I know nothing about audio but I do think the factory HK system is sort of weak. I have a Challenger as well. What kind of ohms would a replacement sub need to have and what is the maximum depth that could be put in that enclosure? Can I get a part number on these subs or something equivalent? Have you added additional power? Finally when you say tuning are you just talking about the equalizer? Thanks.
Well... this is in a Charger, which did not come equipped with the dual sub box. Thst being said, when I added the box, I rewired the OEM HK woofers for an 8 ohm load and powered them with an old Kicker ZX400.1 Class D monoblock amp. That gave me a 100 watt output, which suited the OEM HK woofers just fine. They are rated at about 75 watts RMS... so it was a matter of time before they melted down. LOL.
I've done led color mods, on a few cars, lately and had a small paypal stash... so I sprung for the subs.
We're working with a 5.75" mounting depth, so a low profile subwoofer is just what the doctor ordered. These VD-10 SKAR Audio DVC subs are rated at 500 watts at 2 ohms... with a 4.78" mounting depth.
I will be posting a thread, with more details, on this mod. Suffice it to say, if you're upgrading the subs, add a dedicated sub amp, to power the box. The factory cabin amp will absolutely not power an aftermarket speaker.
The ohm rating on the subs you go with, will depend on how you wire them, in the box and what load your amp is stable down to. For example, my amp is rated for 400 watts, at 2 ohms.
My voice coils are wired in series, for a 4 ohm load, then the speakers are wired together in parallel, for a total amp load of 2 ohms.
As for tuning, my amp crossover, gain and boost are all set at null, so I will have to tweak the actual amp settings, for the best imaging. This is best done with the volume at, or above 22, in order to compensate for the bass "roll off" that is programmed into the cabin amp.
I know... uber technical, but I'm here to help. If you want to do this, shoot me a PM and I'll walk you through it... or anyone else, for that matter.
Long winded, I know... but there you go!
Bob
Riverside, California