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DIY For Audio
High efficiency HT speaker build
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<blockquote data-quote="JimGore" data-source="post: 55024" data-attributes="member: 3"><p>Did a quick sim to see what I could get away with in terms of the XO and the correction network to sort the horn "bump" out. Did the circuit on the 15 degree tweeter response.</p><p></p><p>I like the minimalist approach, so I have as few components as I can. In this sim, I managed to do close to a 4th order LR accoustic filter using a 1st order electric, with a notch filter after it.</p><p></p><p>Take a look at the pics below. First pic is the predicted response, with the solid line showing the 4th order LR.</p><p>Second pic shows the circuit diagram. Sorry, it's a bit small - not sure how to get it bigger.</p><p></p><p>The parts list is:</p><p></p><p><strong>Crossover:</strong></p><p>* 6.3uF capacitor</p><p></p><p><strong>Notch filter: </strong></p><p>* 2.3 uF capacitor</p><p>* 0.8mH inductor</p><p>* 27 ohm resistor</p><p></p><p>That massive resistor has the job of damping the 10dB bump in the response. Kind of scary!</p><p></p><p>Ian.</p></blockquote><p></p>
[QUOTE="JimGore, post: 55024, member: 3"] Did a quick sim to see what I could get away with in terms of the XO and the correction network to sort the horn "bump" out. Did the circuit on the 15 degree tweeter response. I like the minimalist approach, so I have as few components as I can. In this sim, I managed to do close to a 4th order LR accoustic filter using a 1st order electric, with a notch filter after it. Take a look at the pics below. First pic is the predicted response, with the solid line showing the 4th order LR. Second pic shows the circuit diagram. Sorry, it's a bit small - not sure how to get it bigger. The parts list is: [b]Crossover:[/b] * 6.3uF capacitor [b]Notch filter: [/b] * 2.3 uF capacitor * 0.8mH inductor * 27 ohm resistor That massive resistor has the job of damping the 10dB bump in the response. Kind of scary! Ian. [/QUOTE]
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DIY & Tutorials
DIY For Audio
High efficiency HT speaker build
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