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Low Earth Orbit
DIY Audio
60 Degree DIY Mid Hi - AKA PM60
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<blockquote data-quote="Peter Morris" data-source="post: 148054" data-attributes="member: 652"><p>Re: 60 Degree DIY Mid Hi</p><p></p><p></p><p></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">This is more or less what I have done with the Lake – make the amplitude and phase flat (within reason) within each band. When you add everything together with linear phase crossovers they add perfectly and there will be no issues in the time domain.</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">To minimize the system's latency I have used an IIR filter between the subs and low.</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000">In my latest settings I have EQ-ed the natural roll-off of the DIY to perfectly match a 12dB - 100Hz Butterworth function (to about -10dBor more). Then I add 12dB Butterworth high-pass filter to create an almost perfect 24dB LR curve (Two 12dB Butterworth filters added together = 24dB LR)</span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'Calibri'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">I then used a 24 dB LR crossover on the subs and an all-passfilter so that the phase response of the sub matched the DIY from between (about) 50Hz to 200Hz. </span></span></span></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 148054, member: 652"] Re: 60 Degree DIY Mid Hi [FONT=Calibri][SIZE=3][COLOR=#000000]This is more or less what I have done with the Lake – make the amplitude and phase flat (within reason) within each band. When you add everything together with linear phase crossovers they add perfectly and there will be no issues in the time domain. [/COLOR][/SIZE][/FONT][FONT=Calibri][SIZE=3][COLOR=#000000]To minimize the system's latency I have used an IIR filter between the subs and low. [/COLOR][/SIZE][/FONT][FONT=Calibri][SIZE=3][COLOR=#000000]In my latest settings I have EQ-ed the natural roll-off of the DIY to perfectly match a 12dB - 100Hz Butterworth function (to about -10dBor more). Then I add 12dB Butterworth high-pass filter to create an almost perfect 24dB LR curve (Two 12dB Butterworth filters added together = 24dB LR) [/COLOR][/SIZE][/FONT][SIZE=3][COLOR=#000000][FONT=Calibri]I then used a 24 dB LR crossover on the subs and an all-passfilter so that the phase response of the sub matched the DIY from between (about) 50Hz to 200Hz. [/FONT][/COLOR][/SIZE] [/QUOTE]
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60 Degree DIY Mid Hi - AKA PM60
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