Hallo to audio lovers. Past few days i decided to sell my 30years old Infinityes as im tired of watching them and buy something old/new for me.So Aurums by Quadrals caugth my eye so i went for it. The have beautyful design and good choice of speakers inside wich are 2x8"woofers, 2x5" midds and on top RIBBON TWEETER..mmm nice. Wood finish is exelent !! So i buy them and brought them home..After few minutes i notice that is not much clearance in sound and everything is muddy sounding!? W*F.. i just buy.. Im schoked. Soo after good nite rest i started testing and speakers are all ok. Woofers and bass port are in faze, midds are allso good placed and tweeters 100% okay, so only thing i could think of was FILTERS !! So i open the speakers to find out "##€"#€##"€€€."!"";+€-*:#;€.. What in gods name was Quadral thinking?? See picture as i cant talk now.. I must stop..Sorry
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It is clear that top tweeter and midd are filtered separatly same as bottom midd and subbs are parallel filtered again. So 4diferent steps. So i pull out my old trusty tube audio generator and start the oscilloscope so i can see the cut out frequencies. What i saw was mix of 2nd order with 3d order crossovers so it become clear that Quadral did there best to temper the sound in name of perfect results from labo tests wich i found awfull . There are people who like neutral lifless sounds but not me. Speakers must sing same as good singers So i decide to strip the filters and reuse components to build my own 2nd order 3way crossover. So i found calculator online and start the work.You can see the math here for Xsover..
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