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<blockquote data-quote="Peter Morris" data-source="post: 148124" data-attributes="member: 652"><p>Re: FIR filters</p><p></p><p></p><p></p><p>If you want to flatten the phase response of any system, typically you are delaying the highs to match the arrivals of the lows. Even if the lows are still arriving at the same time you will have increased the apparent latency.</p><p></p><p>In addition if you want to do some deconvolution on an impulse response that has some resonance in it, it will take time especially if you want to remove all of the resonance.</p><p></p><p>Focusing will not a change sensitivity. What EAW did was force the compression driver to be flat to about 20 KHz, if you low passed it at about 16KHz you got most of your SPL back. There was also an issue between 1Khz and 2KHz which was caused by the output of the two 7” drivers taking a dive. It took a bit of fixing. <a href="http://eaw.com/docs/1_Current_Products/KF/Spec_Sheets/KF730_SPECS_revD.pdf" target="_blank">http://eaw.com/docs/1_Current_Products/KF/Spec_Sheets/KF730_SPECS_revD.pdf</a></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 148124, member: 652"] Re: FIR filters If you want to flatten the phase response of any system, typically you are delaying the highs to match the arrivals of the lows. Even if the lows are still arriving at the same time you will have increased the apparent latency. In addition if you want to do some deconvolution on an impulse response that has some resonance in it, it will take time especially if you want to remove all of the resonance. Focusing will not a change sensitivity. What EAW did was force the compression driver to be flat to about 20 KHz, if you low passed it at about 16KHz you got most of your SPL back. There was also an issue between 1Khz and 2KHz which was caused by the output of the two 7” drivers taking a dive. It took a bit of fixing. [URL]http://eaw.com/docs/1_Current_Products/KF/Spec_Sheets/KF730_SPECS_revD.pdf[/URL] [/QUOTE]
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