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<blockquote data-quote="Bwap" data-source="post: 8083904" data-attributes="member: 654234"><p>I have been working on a frontstage for my car and was planning on building my own crossovers, but have ran into a few walls there. So I have been thinking about wiring in a supertweeter before the crossover in a component set(or the crossover inputs).I plan on wiring some speakers to my RockfordFosgate that pushes 300@2x4. This method would be wiring the 4 ohm woofer to an 8 ohm tweeter with a passive crossover, using one that makes the load the amp sees at this point 4 ohms(like a component set). I then would wire my 8 ohm supertweeter into the inputs of the crossover(paralell), resulting in an impedance of 2.66 ohms. This option is not ideal because it would be sending 130watts to the midrange and 65watts to each of the tweeters, while 150watts to the midrange and 75watts to each tweet is best.. At two ohms the power split with them all wired in paralell is optimal, ratings being exactly at said wattages. Also I am planning on wiring an on/off switch in before the supertweeter. If I turn the tweeter off while they are all wired in paralell it will leave a 2.66 ohm load. That is about 160 watts to the midrange and 80 watts to the silk tweeter which is fine. Although if I have them wired in before a crossover, turning off the supertweeter will result in a 4 ohm load.. leaving 100 watts for the midrange and 50 watts for the tweeter, which is less than I would like for these drivers.</p><p></p><p>Basicly I would really like to run 150 watts to a mid range woofer(low pass), 75 watts to a silk dome(high pass) and the remaining 75 watts to a supertweeter(high pass) wired all in paralell with proper filtering. As I said above, a 4 ohm woofer and two 8 ohm tweeters wired in paralell, result in a two ohm impedance. I have a diagram on how i was planning on wiring this, hopefully you can tell me if it achieves a two ohm impedance while still being a successfull crossover, or tell me a way I can do this/do it better.</p><p></p><p><img src="http://s13.postimg.org/vnq2buzon/Mid_tweet_tweet_crossover_wiring.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>These are the speakers I plan on using:</p><p></p><p>Crescendo pwx-6.5 - <a href="http://store.crescendoaudio.com/pwx-6-5-mid-range/" target="_blank">http://store.crescendoaudio.com/pwx-6-5-mid-range/</a></p><p></p><p>Amp High pass - Meeting my 8"s at 50%@ undecided hz.. thinking 450-500hz?</p><p></p><p>Low pass - 4,000-5,600hz</p><p></p><p>Thinking 4,000hz</p><p></p><p>Morel MDT 12 - <a href="http://www.parts-express.com/pe/showdetl.cfm?partnumber=277-060" target="_blank">http://www.parts-express.com/pe/showdetl.cfm?partnumber=277-060</a></p><p></p><p>High pass - 1,800-3,800hz</p><p></p><p>Thinking 2,500hz</p><p></p><p>Crescendo FT1 - <a href="http://store.crescendoaudio.com/ft1-black-series/" target="_blank">http://store.crescendoaudio.com/ft1-black-series/</a></p><p></p><p>High pass - 3,800-5,000hz</p><p></p><p>Thinking 4,000hz</p><p></p><p>Any opinion on the crossover points would also be appreciated, thanks.</p></blockquote><p></p>
[QUOTE="Bwap, post: 8083904, member: 654234"] I have been working on a frontstage for my car and was planning on building my own crossovers, but have ran into a few walls there. So I have been thinking about wiring in a supertweeter before the crossover in a component set(or the crossover inputs).I plan on wiring some speakers to my RockfordFosgate that pushes 300@2x4. This method would be wiring the 4 ohm woofer to an 8 ohm tweeter with a passive crossover, using one that makes the load the amp sees at this point 4 ohms(like a component set). I then would wire my 8 ohm supertweeter into the inputs of the crossover(paralell), resulting in an impedance of 2.66 ohms. This option is not ideal because it would be sending 130watts to the midrange and 65watts to each of the tweeters, while 150watts to the midrange and 75watts to each tweet is best.. At two ohms the power split with them all wired in paralell is optimal, ratings being exactly at said wattages. Also I am planning on wiring an on/off switch in before the supertweeter. If I turn the tweeter off while they are all wired in paralell it will leave a 2.66 ohm load. That is about 160 watts to the midrange and 80 watts to the silk tweeter which is fine. Although if I have them wired in before a crossover, turning off the supertweeter will result in a 4 ohm load.. leaving 100 watts for the midrange and 50 watts for the tweeter, which is less than I would like for these drivers. Basicly I would really like to run 150 watts to a mid range woofer(low pass), 75 watts to a silk dome(high pass) and the remaining 75 watts to a supertweeter(high pass) wired all in paralell with proper filtering. As I said above, a 4 ohm woofer and two 8 ohm tweeters wired in paralell, result in a two ohm impedance. I have a diagram on how i was planning on wiring this, hopefully you can tell me if it achieves a two ohm impedance while still being a successfull crossover, or tell me a way I can do this/do it better. [IMG]http://s13.postimg.org/vnq2buzon/Mid_tweet_tweet_crossover_wiring.jpg[/IMG] These are the speakers I plan on using: Crescendo pwx-6.5 - [URL="http://store.crescendoaudio.com/pwx-6-5-mid-range/"]http://store.crescendoaudio.com/pwx-6-5-mid-range/[/URL] Amp High pass - Meeting my 8"s at 50%@ undecided hz.. thinking 450-500hz? Low pass - 4,000-5,600hz Thinking 4,000hz Morel MDT 12 - [URL="http://www.parts-express.com/pe/showdetl.cfm?partnumber=277-060"]http://www.parts-express.com/pe/showdetl.cfm?partnumber=277-060[/URL] High pass - 1,800-3,800hz Thinking 2,500hz Crescendo FT1 - [URL="http://store.crescendoaudio.com/ft1-black-series/"]http://store.crescendoaudio.com/ft1-black-series/[/URL] High pass - 3,800-5,000hz Thinking 4,000hz Any opinion on the crossover points would also be appreciated, thanks. [/QUOTE]
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