I have tried many 5 1/4" comp. sets. The JBLs or Infinity is what I
would choose if I were to pick out of the 4. The JBLs have better (not
the best) bass response. But I have great experience with both brands.
Although, the both of them have a characteristically 'weak'/'muffled'
sub bass output (we're talking below 100Hz), they are extremely clear
and precise in the vocal and higher frequency range. I cant compare that
with the Kenwoods because I have never heard them. With 5 1/4"s, you
have to be a little realistic; meaning, don't expect booming bass. They
are small diameter woofers. Small speakers dont move a lot of air, which
doesnt produce a lot of bass. If bass is something that you really want
I would try supplementing with small midss (6 1/4") (replacing the
Infinity/JBL woofers or try installing kickpanels with components that
have larger woofers. Hope this helps somewhat.

EFFENDI

The audible difference is minimal but the efficiency will be different so
some will play louder than others fed the same wattage. Most offshore-made
coaxials are very similar. P.