[dhpnet]

If your passenger rear door speaker is rattling then you must have it faded to the rear. The whole system will sound very weak if you fade to the rear. The Pioneer system is setup with a front sound stage, and all of the sound is only supposed to come from the front. Put the fader in the middle. If it's in the middle then you won't hear the rear door speakers at all, even if you sit in the back seats.

If the sub woofers in the back deck lid are rattling then something is probably loose. When I got my car the buttons on the back of the headliner weren't pushed in all the way, and the headliner rattled and vibrated a lot with sub bass notes. Sit in the back seat and see where the rattle is coming from and check if anything is loose. If the speaker itself is rattling then you should take it to the dealer and have them replace the speaker.

The Pioneer system is not a high power system, but if it's tuned right it's more than loud enough for the average person. It'll make your ears ring.

 

[dhpnet]

I have my Pioneer system set at:
treble=10
mid=3
bass=3
fade=0

Sounds great to me. Although, I did replace the tweeters. The original tweeters are not Pioneer. They are just generic GM tweeters.

Do NOT fade to the rear. It will sound terrible.

 

[dhpnet]

Question for you. With those settings being so far from default, what audio source are you using? If it's CD, then that's cool if it's your preference, but if it's the AUX I'm curious if your compensating for poor analog signal quality. I've found a huge difference in AUX audio quality because of different phones/mp3 player's audio output quality.

That's for all sources. I usually use a USB stick with MP3s encoded at 256K, but also use the same levels for radio. I have never used the Aux plug, bluetooth, or the CD player. I like the bass, so I pump it up a little. The mid range sounds hollow lower than about 1 or 2, and it sounds boxy above about 4 - best at 3.

The generic OEM tweeters that the penny pinchers used with the Pioneer system never sounded good to me. They sounded very closed, lacking brilliance, and generally really bad. There was no level that made them even OK. I replaced them and now the treble sounds great at 10. Very clear highs that are balanced with the strong bass and full mids.