Once again, thank you guys for your replies. I am most likely going to go with 600.4 amp, 602s and at28s based on your suggestions. Before I make the jump, I am wondering if anyone in the Joliet/Chicagoland area would be willing to let me listen to their setup, with or without these speakers/amp?

 

Fire I am in lockport if you want to swing by and have a listen.
Moto Mike is also from the area.
There are a few others in the area but I haven't seen them on the forum in quite sometime.

I sent you a PM with my number

 

There are a couple guys in the Joliet/ Lockport area. Their systems are pretty impressive. Look up Babyboy and Moto mike. Very helpful guys!!!!

 

if you run the 602's they are a coaxial speaker with a tweeter. no need for the At 28's. if you run the DD Aw.6.5's you will need the AT 28 tweeters. DD AW 6.5 w/ AT 28 and the 602's are both good choices but if $$$ is not a big concern the DD AW components will sound better. They could both use more power then the 600.4 puts out, Focal and new BT 4250 are the new power house amps but also cost more! I'm a big fan of the Hybrid Technology speakers (BT) and have some on my bike along with some DD VO type speakers. DD VO 6x9's in my lids, Vo 6.5 in my lowers! My sig has the rest! Good idea to listen to some different set ups, see what sounds good to your ears!