I recently bought a 1999 Trailblazer with the 6-speaker Bose system. It came with an aftermarket Panasonic head unit 50x4. The driver's door speaker blew so I'm thinking about replacing the door speakers and maybe the dash speakers as well. I also have a 12in. Pioneer Sub in an enclosed custom box I'm going to throw into the mix as well.

My first question is will 4x6's (30 RMS) go into the dash? I have a guy off of Craigslist wanting to get rid of a pair of Sony XS-V4642A 4-way 4x6 coaxials for pretty cheap, I'm thinking of throwing them into the dash. Should I just stick with tweeters?

Will 5x7's fit into either the front or back doors? Another guy off of Craigslist getting rid of a pair of Alpine type R 5x7 coaxials for a good price. Though, I may stick with 6.5's for all four doors.

If I have the 4x6's (30 RMS) in the dash and say a pair of 6.5's in the front doors that are (50 RMS) how will that affect the sound beings the dash and front door speakers are ran off of the same channels?

Maybe I'll go with the 4x6's in the dash, 6.5's (50 RMS) in the front doors and the 5x7's (100 RMS) and the sub in the back???? Can a head unit that is 50x4 push the 4x6's, 6.5's, and the 5x7's or will I need to use power from the amp I'll use on the sub?

Sorry if it's a little confusing, any help will be greatly appreciated. Thank you.

 

https://blazerforum.com/forum/audio-video-electronics-8/oem-speaker-sizes-24051/
^ read through that. ur best bet is to stick with factory sizes. i would do 4x6 plates in the dash, 6.5s in the doors and call it a day

 

Thanks for the response!!

What do you think about using the Sony XS-V4642A 4-way 4x6 coaxials (30 RMS) in the dash, a pair of Pioneer TS-A1667 3-way 6.5's (50 RMS) & a pair of Kicker 6.5 component subwoofers (100 RMS) in the doors, and the 12 in. Pioneer (600 Watts max if think) sub in the back?

If this would be an okay setup, how should I place the 6.5's. Pioneer's in the front and Kickers in the rear doors?

My head unit is 50x4, how should I incorporate an amp into the equation and how many watts?

I just wanted to add that the assistance given on this forum is incredible and greatly appreciated!!