Major rattles from front suspension

[Kisner]

I know I won't know for sure until I have a shop inspect it but maybe someone can give me some clues as to what might be causing this.

Have a 68 coupe and when driving on a good road it drives and rides like a brand new car. Had a front-end alignment a few months ago, tires and wheels balanced, all new shocks, and all new tires. Everything steers perfect. However, when I hit a bump in the road I have a major rattle coming from somewhere up front low to the ground. Sounds like a bunch of stuff is lose. I've visually inspected everything and everything appears to be hooked up correctly and tight. I have no clue where it could be coming from and am not much of a mechanic. Doesn't sound like it's coming from the wheels but could be. Sounds more like underneath towards the middle. Could it be worn/damaged bushings, ball joints, wheel bearings, or what? Thanks.