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<blockquote data-quote="zako" data-source="post: 7596576" data-attributes="member: 629735">What you&#039;re observing seems like a symptom of a car with no time correction for the front midbasses. When you move your head to the center of the vehicle, the distance from your ears to your speakers is the same for each speaker, and so the speakers are roughly in an acoustic phase. When you move your head away towards the normal driving position, the speakers are a little out of phase. Low frequencies are the ones that are most affected by the phase issues. If you don&#039;t like it, buy a stereo or a processor with time correction. Pioneer is coming up with a unit that automatically tunes TA and equalizer soon, this may be worth looking into.Some people also mentioning aiming your midbasses. My guess is that aiming midbasses differently will not affect the frequency response in the low frequencies, but it can affect the frequency response towards the upper frequency limit of the driver. All drivers experience a phenomenon called beaming, which basically reduces the dispersion of sound at the upper end of driver&#039;s limit. For 6.5 inch drivers this should start somewhere above of 2-3KHz, well above the midbass range.Of course, all of this could be wrong and you are experiencing the work of some other sonic gremlins..</blockquote>

[QUOTE="zako, post: 7596576, member: 629735"] What you're observing seems like a symptom of a car with no time correction for the front midbasses. When you move your head to the center of the vehicle, the distance from your ears to your speakers is the same for each speaker, and so the speakers are roughly in an acoustic phase. When you move your head away towards the normal driving position, the speakers are a little out of phase. Low frequencies are the ones that are most affected by the phase issues. If you don't like it, buy a stereo or a processor with time correction. Pioneer is coming up with a unit that automatically tunes TA and equalizer soon, this may be worth looking into. Some people also mentioning aiming your midbasses. My guess is that aiming midbasses differently will not affect the frequency response in the low frequencies, but it can affect the frequency response towards the upper frequency limit of the driver. All drivers experience a phenomenon called beaming, which basically reduces the dispersion of sound at the upper end of driver's limit. For 6.5 inch drivers this should start somewhere above of 2-3KHz, well above the midbass range. Of course, all of this could be wrong and you are experiencing the work of some other sonic gremlins.. [/QUOTE]

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