if the amp i use is 320w and put more than that in speakers, will it cause problems other than lower volume?
like i bought this: https://www.amazon.com/dp/B09LM1BGYF
and i wanna add these: https://www.amazon.com/gp/product/B01JH3PNSO
#Audiophile question
hexed timber
cinder geyser
the wattage just tells you how much energy the speaker can handle on its input. if your amp can deliver more than the speaker can handle you can easily kill the speaker by turning the volume too high.
on the other hand - flooring your amp because it is too weak to achieve desired volume with a given speaker will lead to clipping. that in turn can lead to the signal into the speaker having a lot of the energy shifted to higher frequencies and can still kill the tweeters even if the speaker is rated for higher wattage than the amp delivers.
back to your question - none of that really determines how loud a speaker is. that is down to the speakers sensitivity. that parameter doesn't seem to be listed for any of those linked. sensitivity tells you how many dB you get per W of input power to the speaker.