guys possible ba to make a pair of 18k to 30k speakers to sound almost like 80k ones just using better cables and accoustic treatments? just how important are accoustic treatments sa sq? will the expensive speakers still sound good with just a little treatment or dapat sagad sagad to bring out the speaker's potential?
Coming from my own experience, no, not really.
Coming from my first Diamond 9.1 pair to my current setup, I can reasonably say you do get what you pay for as you go up the ladder. But at a certain price point, you begin to hit diminishing returns in terms of price-performance ratio.
Though as they say, system matching and proper placement are key. You don't need to go all out. Sometimes placement lang ok na.
I'd advise getting your speakers first, then tailor fit the system around it. Audition and know the sound you prefer. Pwede super detailed (makalansing yung highs), warm (bilog yung tunog) bass-heavy (tugs-tugs-tugs type) neutral. . .
Consider your listening area. Kung maliit, choose speakers that perform well nearfield and sound good in moderate volumes. Harbeths sound very well nearfield. Dynaudios, for example, need volume and space to breathe.
As a rule, you need more space for floostanders and big bookshelf speakers. Small bookshelves excel in soundstage and imaging but lack low-end oomph.
DIY speakers are fine, but depending on the maker, and even the purpose of the speaker, you will probably be hit with a significant decline in resell value vs established brands.