An easy wey to know if your vibration comes from defective suspension
components:

Grab each one of the tires from the top.  Rock it in and out fast and
strong enough to rock the car.  You will feel the play in your hands and
hear the knocking if there is play.

Grab each tire from the left and right sides as if to cause them to turn.

Vibration from alignment is mostly seen in cars with less than optimal
suspension components in particular when the toe is left at 0 degrees
and this is why a lil toe-in can be convenient.

Vibration from wheels and tires is harder to find than one might think.
 It can be caused by a defective wheel, a defective tire, an out of
balance assembly, an improperly mounted tire, a combination of all.
That is why, to my knowledge, the Hunter machine is the only one capable
of finding the real cause of the problem.

Good luck.