Alright so I've spend the last week researching and planning my audio build. I set myself a budget for 2K for everything and I did it by like 75 bucks. Just 2 things that didn't fit into said budget. I have the bose in my 04 coupe. So I got component for the front doors, some 3-way 6"x9" for the rear deck on one amp and the sub on another. My issue is the rear seat side speakers. I don't want to buy another amp (over budget) to power those speakers for there so could I use the Alpine headunit to power them or by having the rear line out being used does it shut off the speaker out put from the internal amp? If that will work I am willing to go a bit over budget and get a new set of speakers for there. Also would I really notice a differece if I used those vs didn't use them?

Also, The headunit is an Alpine IVA-W505 with the 7" touch screen. If later down the road (soon most likely) I get a car PC can I run it on that screen with the touch controling the PC? I know it has 1 A/V input but my question is would the touch screen portion of it work? If not I can live with it, just curious.

 

Here is what I'm getting:

Headunit: Alpine IVA-W505
Speaker AMP: Infinity Reference 475a
Sub Amp: Infinity Reference 1300a
sub: Infinity kappa 104.7
Front components: Infinity Reference 6020cs
Rear Speakers: Infinity Kappa 692.7i

My budget was just for component not install parts

Any insight into something I may have missed would be good

I will be making my own box and amp racks. I'll be doing a 4080 style enclosure for the sub, but not sure how to do the amps.

 

You don't need to use both the 6x9s and the 6.5's in the rear. Use one or the other or neither, but not both. The 6x9s only reproduce bass frequencies in the Bose system. In your new system, the 6x9s will be full range.

 

Alright, thanks Gilley. No the question becomes. Which speaker location is better? I'm guessing the 6x9 since the other side doesn't have many options (atleast on crutchfield)

 

I would replace the rear side speakers. You need 6.5 inch coaxials. They are cheaper and easier to replace than the 6x9s.

 

You don't need either actually

But if you did want to keep the 6 x 9's and still wanted to hook up the rear speakers, you can wire them off the HU as you mentioned. However, as Gilley mentioned, I'd do one or the other, because the sound stage will be moved more towards the rear and behind you rather than in front.