Dunno really. One thing one could do is spectrum analyse what is on the source matl, what exits the final amplification stage, and compare to measurement of what's coming out of the spkrs, I suppose.
I guess most people would probably just sit & listen, hoping that the perceived acoustic differences (if any) would be significant and repeatable. The problem (and I agree with an earlier comment of yours) is that many speakers inside a room are notorious distorters anyway...
Empirically however, it's quite easy to effect some change just by changing the type of wire connection in the amp-spkr circuit... now, if the resulting amplitude response (and power response, I guess) seems to favour certain frequencies that were lacking before, it's perceived as more "revealing" (although, all that usually means is strengthening of upper end frequencies + some bass...).
I guess most people would probably just sit & listen, hoping that the perceived acoustic differences (if any) would be significant and repeatable. The problem (and I agree with an earlier comment of yours) is that many speakers inside a room are notorious distorters anyway...
Empirically however, it's quite easy to effect some change just by changing the type of wire connection in the amp-spkr circuit... now, if the resulting amplitude response (and power response, I guess) seems to favour certain frequencies that were lacking before, it's perceived as more "revealing" (although, all that usually means is strengthening of upper end frequencies + some bass...).