Just bought new 2010 h3 without the monsoon sound system and added a Kenwood dnx6020ex. Since putting it in, my factory speakers sound aweful! What is cheapest way to make it sound better? Add a sub and amp? replace door speakers? I dont really want to lose my cargo space in back, so it have to be something small. I saw the JBL hideaway, but I dont have the right panels because I did not get monsoon package. I went to local stereo store today, of course they said I need some $1000 system to make it better...I have put so much into it already, that $1000 more for a cleaner sound with a little bass just isnt worth it. I figured my fellow Hummer folk could me out...thanks...I am glad I found this page!

 

Try replacing the speakers and see how that sounds. also try setting the eq on the radio

 

Try setting the little **** on the wiring harness. Mine didn't sound good until I played with the voltage **** since my preout's were really high for the stock sound system.

You'll only have that **** if you used a wiring harness adapter from like metra and didn't just hillbilly rig it in.

I put a Kenwood DNX9960 in mine. I have two 15 inch rockford fosgate subs going in this weekend. I'll probably replace the stock speakers very soon too, but they sound fine for ****ty oem stuff, same as it did before the new head unit.

 

Just add $$$$$$$$$$$