Dynamic compression in speakers themselves?


The primary audio characteristics I want to achieve in my system is an open, uncompressed, unstrained, and highly dynamic presentation.  What I don't know much about is how much speakers can or do contribute to loss of dynamics and impact.  I have a very powerful amp, but it seems that when I increase the volume, yes, the speakers get louder, but perhaps not commensurate with the increase in the volume control.  I do think I understand that this type of presentation is more easily achieved with larger scale speakers, but even with my large speakers, I feel something is wanting. 

I guess my question is, what factors contribute to any compression occurring in the speakers themselves?  Also, can the age of a speaker cause a loss of dynamics?  Mine are ~20 years old.  I'm thinking to get new speakers in the foreseeable future, so I'd like to understand more about this.  This question is in regard to traditional dynamic speakers.
mtrot

Enter your text ...Yes you have the amplification covered quite well.

 Just get busy auditioning different brand speakers and that's it. Yes 20 yrs does make a difference. Especially if driven hard. I did a lot of research a while back and bumped int a company that makes a machine to measure cone breakup using laser dopplar. I also bumped into a company called Accuton. They make the kind of quality I think you are looking for. I didn't look any further because the speakers are out of my league. Your amp has the power, now you have to get a no compromise speaker that can handle the signal. Get the checkbook ready.Can't wait to see what you end up with.


Thanks.  Lol, my wife and I took in the Doobie Brothers concert here tonight.  It was great, but.....  well, as soon as they started playing, I immediately developed a severe inferiority complex with regard to my speakers!  The power and immediacy of the guitars and drums shots was amazing.  Yeah, I understand that a home system is not going to match that, and I wouldn't want to listen for much time at those levels.  But, it sort of informs you of what "good" is, with respect to dynamic sound.
Yeah, I understand that a home system is not going to match that
Sure it can.
Post removed 
A home system based on pro studio main monitors (mentioned above) is going to be very much the same level of immediacy of guitars and drum shots. It is quite easily done. Of course you won’t listen loud like that all day long.