I decided to post this here as there are so few current upgrades for the Bonneville GXP'*.
I got tired of the thumping of the Monsoon system, especially on any music with a decent bassline. Figure an 8-SPEAKER MONSOON SOUND SYSTEM
should have good lows. Well, the problem isn't the system but of course the crappy speakers. I went to http://www.crutchfield.com/
and found a set of Polk Audio db 690'*
for the rear and Polk Audio db 675'*
for the front door speakers. The installation is pretty painless, although believe it or not the rear seat comes out for the back speakers :( It'* almost like they built the car around the speakers themselves. But Crutchfield tech support was able to give me detailed instructions for removing it. They also have photos for removing the front door panel as there is a tricky hidden clip in the center of the door.
Anyways, the sound is AWESOME
compared to the OEM setup and the factory grills remain. Crutchfield also has no hassle 30 day return with return shipping! You can't beat that! They also provided free a GM wire harness as GM finds it so difficult to use regular wire plugs, sheesh! Right now Crutchfield has a buy one set get the second half price until the end of August which saves $50 on the front speakers. And if you mention referral code pg6xf-iycua-avb2z
they'll knock off another $20.
I'm sure anyone who takes advantage of this sale will really enjoy it. The Monsoon amp is pretty good, it'* just a shame they stuck such lamo speakers in the car with it. BTW, I only did the 4 speakers but was thinking maybe I'll get a set for the rear door also.