Is this a good idea? I have a Kenwood Z828 Deck with 2 10" Memphis subs & Coustic 800DB amp in a single cab. How would it sound with factory speakers?

 

This is a recipe for a very bass heavy, "out of balance" system, in my opinion. Even driven with a aftermarket HU, the stock speakers have no prayer of reproducing anything approaching "quality" sound. However, by integrating them with the other gear, there will be a big difference in the part of the total frequency spectrum that will be reproduced. Taking into consideration a job well done with the amps and subs, the sound quality will not improve, necessarily, but the frequencies reproduced and the loudness of them will increase. The difference in the system will be very noticeable, and oftentimes people tend to say this type of set-up sounds "better", when actually all it is, is louder. Louder is NOT necessarily better, just louder. Bottom line, it depends on what you want from your system. If you want loud, clean(I mean really loud and clean) sound reproduction, this ain't gonna get it. If you want muddy, blubbering, thumping bass with no sound quality otherwise, then this is the way to go.

 

I dont want to be in DB race or nothing. Just that being inside and out you can hear the music and the bass. Would my system blow the factory out?

 

If you run the factory speakers off the Kenwood HU then you likely WON'T damage any speakers. Certainly you can't add much of an amp to them or they're done. If you are looking to "hear" music outside your truck, then you're going about this the wrong way. If you want to "hear" bass, then this is a good start. But the system will not be musical, just loud. There is a huge difference between loud bass and loud quality reproduction throughout the frequency spectrum. It isn't at all difficult to put together a loud system. It is not so easy, however, to put something together that actually has great sound quality.

 

What about if I added 2 tweeters? And if I was in my truck would I be able to hear music?

 

If I may ask, what is it exactly you are wanting from your system? And what kind of budget do you have?

 

Basicly I want a good system for cheap. That the music and bass can be heard from inside and out. If that is not possiable with what I have then I will do something else. But how would tweeters sound in a factory system?