Very interesting, thank you! Basically 8cm can't play bass and Organ isn't there, while 20 can't play trebles and Female vocal just not there. 13 seems to be good middle ground. For full picture a 16cm is needed;) But this is very good comparison anyways, to get an idea how speaker size translates into its sound.
Thank you for your comment. This series has a consistent structure and sound quality of each part, so you can compare each diameter. The diameter you need depends on your preference. I thought it would be a good idea to add a tweeter to the 20cm speaker.
Winner is Tangband W3-1878. The bass is limited but does not bleed through the rest of the audio spectrum. From experience, the full-range loudspeaker performs very poorly in a bass-reflex load and here again this is confirmed.
Thank you for your comment. This series has consistent sound quality, but when I actually listened to it, the sound quality of the 20cm aperture was particularly outstanding.
I like 13 the most. Soft and detailed highs, very flat FR (there are no mid bumps), linear phase as expected, enough bass support. But 20 could be selected with people who likes B&W sound for instance.
