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Τα ακουστικα χωριζονται σε 2 κατηγορίες αρχικα.η τιμη τους ειναι εδω http://reviews.cnet.com/headphones/klipsch-image-x10i-copper/4505-7877_7-33974721.html , και απο οτι κορυφαιο ειχα αγορασει (περιπου 12 ζευγη) αυτα ηταν τα καλυτερα.Αν μιλαμε για ανοικτου τυπου (ψειρες) γιατι εσυ εβαλες κλειστου.
Η βασική διαφορά είναι πως τα κλειστά τύπου απομονώνουν από το χώρο ενώ τα ανοικτά όχι.ποια η διαφορα κλειστου με ανοιχτου , γιατι απο το 1986 που αγοραζω ακουστικα οτι κλεινει το αυτι μεσα του, τα ξερω ως κλειστου τυπου............
Closed headphones have a closed, or sealed, cup. Open headphones are open behind the driver.
Closed headphones will keep you from hearing outside sounds and also keep people around you from hearing your headphones - you'll see this referred to as "leaking."
It might sound like closed is best, but you have to remember that a driver produces sound from both sides, not just the one pointing at your ear. A sealed cup will have reflections, resonances and other shortcomings. Some closed headphones deal with those issues very well, but you're always going to have to compromise somewhere if you're going to be closed.
On the other hand, open headphones don't have these problems. Back waves just go out to the side - they don't reflect or cause problems. Because of that, you can get much better fidelity from an open headphone. At least I think so, but I'm sure someone will weigh in on the other side.
Αυτό που περιγράφεις (πώς έρχεται σε επαφή με το αυτί) είναι τα περί Circumaural - SupraAural κλπ κλπ...γιατι απο το 1986 που αγοραζω ακουστικα οτι κλεινει το αυτι μεσα του, τα ξερω ως κλειστου τυπου............
Circumaural headphones (sometimes called full size headphones) have circular or ellipsoid earpads that encompass the ears.Because these headphones completely surround the ear, circumaural headphones can be designed to fully seal against the head to attenuate external noise.Because of their size, circumaural headphones can be heavy and there are some sets that weigh over 500 grams (1lb). Ergonomic headband and earpad design is required to reduce discomfort resulting from weight.
Supra-aural headphones have pads that press against the ears, rather than around them. They were commonly bundled with personal stereos during the 1980s. This type of headphone generally tends to be smaller and lighter than circumaural headphones, resulting in less attenuation of outside noise. Supra-aural headphones can also lead to discomfort due to the pressure on the ear as compared to circumaural headphones that sit around the ear. Comfort may vary due to the earcup material.