They probably are with new woofers but with a vintage woofer you can use as large as you want because of the high impedance drivers. The high impedance and large coils and strong magnets allows them to control themselves and not need an amp to control them.
6.5 vs 8 vs 10 woofer
IMHO I think the 8 is the ideal size cone for mid/small sized listening rooms. Even for large size listening rooms.
The lower mid hz's seem cleaner/clearer. And there is so little fq's in 905+ of the music we listen to, it seems to me the 8 driver is the most perfect size cone.
A 10 size cone has the potential to become overwheling, aggressive, attacking when amp gain is pushed just a tad too much, = Better volume control with a 8 vs a 10.
The 6.5 misses some of that lower bass which a 8 can voice superior.
After listening to several YT vids with a 10 FR, I had considered going 10, but i think staying with a 8 avoids regrets.
I listen at low/mid volume.
The lower mid hz's seem cleaner/clearer. And there is so little fq's in 905+ of the music we listen to, it seems to me the 8 driver is the most perfect size cone.
A 10 size cone has the potential to become overwheling, aggressive, attacking when amp gain is pushed just a tad too much, = Better volume control with a 8 vs a 10.
The 6.5 misses some of that lower bass which a 8 can voice superior.
After listening to several YT vids with a 10 FR, I had considered going 10, but i think staying with a 8 avoids regrets.
I listen at low/mid volume.