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<blockquote data-quote="AP0C552" data-source="post: 8379895" data-attributes="member: 622198">Hello!I just did an install of 4 Hertz Ecx 165.5 6.5&quot; coaxial speakers into my 2014 kia rio.They sound quite impressive on factory deck, and are quite efficient speakers!The only immediate problem I notice is quite a lot of harsh sibilance. To the point that I am almost wondering if something is causing it. I have to turn treble down to like -6 on my head unit.Are there any well known causing for sibilance. I read that bad wiring could do it. But I don&#039;t see how this could be the case. Could under powering the speakers cause sibilance?The stock speakers has no dedicated tweeter, so maybe is the treble of the head unit just exceptionally exaggerated?Any feedback or guidance on this matter would be highly appreciated!Thanks //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</blockquote>

[QUOTE="AP0C552, post: 8379895, member: 622198"] Hello! I just did an install of 4 Hertz Ecx 165.5 6.5" coaxial speakers into my 2014 kia rio. They sound quite impressive on factory deck, and are quite efficient speakers! The only immediate problem I notice is quite a lot of harsh sibilance. To the point that I am almost wondering if something is causing it. I have to turn treble down to like -6 on my head unit. Are there any well known causing for sibilance. I read that bad wiring could do it. But I don't see how this could be the case. Could under powering the speakers cause sibilance? The stock speakers has no dedicated tweeter, so maybe is the treble of the head unit just exceptionally exaggerated? Any feedback or guidance on this matter would be highly appreciated! Thanks [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] [/QUOTE]

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