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<blockquote data-quote="keep_hope_alive" data-source="post: 7126922" data-attributes="member: 576029">excellent graphic and response above.there aren&#039;t a lot of parametric eq&#039;s on the market, and they have few bands for adjustment, typically 3-4 (unless you are digital).&nbsp; parametric EQ&#039;s are great when you know what to listen for.&nbsp; you can sweep the frequency to find the problem areas, then sweep the Q to nail down the desired width.graphic EQ&#039;s can be octave band, 1/2 octave band, 1/3 octave band, etc.&nbsp; they are what people are used to seeing and are easier to adjust since there is less flexibility.&nbsp;&nbsp; here is a description on the limits of various octave bands<a href="http://online.physics.uiuc.edu/courses/phys193/Labs/Octave_Bands.pdf" target="_blank">http://online.physics.uiuc.edu/courses/phys193/Labs/Octave_Bands.pdf</a>most head units have very basic EQ&#039;s - if you can call bass, mid, and treble an &quot;EQ&quot;.&nbsp; some have 7-band or 15-band EQ&#039;s, few have more.&nbsp; having an EQ built into a head unit keeps the system simple but navigating to the EQ is different for each head unit and some are better than others.external EQ&#039;s have to live somewhere so you have additional space being taken up, and you have additional wiring.&nbsp; adding to the complexity is that most have 2-ch input and 4-6ch output.&nbsp; this means you gain or lose flexibility depending on the head unit and your system setup.each system is unique and each owner is unique.&nbsp; there is not one answer or setup for everyone.&nbsp; but with more input we can offer our suggestions based on experience helping people get what they need/want.using an EQ requires knowing what it&#039;s actually doing to the signal and output. it also helps to know where the system&#039;s deficiencies are and if they can even be corrected with an EQ.&nbsp; an EQ can help most systems just as easily as it can hurt them (sound-wise).&nbsp;&nbsp; but the best thing is to start playing with it and use your ears.</blockquote>

[QUOTE="keep_hope_alive, post: 7126922, member: 576029"] excellent graphic and response above. there aren't a lot of parametric eq's on the market, and they have few bands for adjustment, typically 3-4 (unless you are digital). parametric EQ's are great when you know what to listen for. you can sweep the frequency to find the problem areas, then sweep the Q to nail down the desired width. graphic EQ's can be octave band, 1/2 octave band, 1/3 octave band, etc. they are what people are used to seeing and are easier to adjust since there is less flexibility. here is a description on the limits of various octave bands [URL="http://online.physics.uiuc.edu/courses/phys193/Labs/Octave_Bands.pdf"]http://online.physics.uiuc.edu/courses/phys193/Labs/Octave_Bands.pdf[/URL] most head units have very basic EQ's - if you can call bass, mid, and treble an "EQ". some have 7-band or 15-band EQ's, few have more. having an EQ built into a head unit keeps the system simple but navigating to the EQ is different for each head unit and some are better than others. external EQ's have to live somewhere so you have additional space being taken up, and you have additional wiring. adding to the complexity is that most have 2-ch input and 4-6ch output. this means you gain or lose flexibility depending on the head unit and your system setup. each system is unique and each owner is unique. there is not one answer or setup for everyone. but with more input we can offer our suggestions based on experience helping people get what they need/want. using an EQ requires knowing what it's actually doing to the signal and output. it also helps to know where the system's deficiencies are and if they can even be corrected with an EQ. an EQ can help most systems just as easily as it can hurt them (sound-wise). but the best thing is to start playing with it and use your ears. [/QUOTE]

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