Hello!
I saw my recent post just finished, and noticed "dentdog's" post right above mine. He said to "do without a crossover" He's right and correct. Install a very-good 4" or 5" driver without crossover in a "transmission-line" box (lossy bass-reflex) and acheive near-perfect reproduction over much of the audible frequencty range limited only by driver performance. Try a coaxial driver, can be larger up to 8" for more bass (and larger box). System will have nearly flat frequency response and linear phase over much of audible frequency range in midrange but with limited sound power. There will be no sweet spot (limited only by driver polar response). If you live in apartment and cannot play loud, and can do without low bass, this kind of system will do well on small-combo jazz and classical chamber music. Observe if a coaxial it may have built-in crossover which may not work as well as no crossover.
Mechanical crossover ("wizzer cone") might be OK.
RIMO
I saw my recent post just finished, and noticed "dentdog's" post right above mine. He said to "do without a crossover" He's right and correct. Install a very-good 4" or 5" driver without crossover in a "transmission-line" box (lossy bass-reflex) and acheive near-perfect reproduction over much of the audible frequencty range limited only by driver performance. Try a coaxial driver, can be larger up to 8" for more bass (and larger box). System will have nearly flat frequency response and linear phase over much of audible frequency range in midrange but with limited sound power. There will be no sweet spot (limited only by driver polar response). If you live in apartment and cannot play loud, and can do without low bass, this kind of system will do well on small-combo jazz and classical chamber music. Observe if a coaxial it may have built-in crossover which may not work as well as no crossover.
Mechanical crossover ("wizzer cone") might be OK.
RIMO