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Active vs. Passive: An attempt by me to explain
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<blockquote data-quote="ejschultz" data-source="post: 5957126" data-attributes="member: 603800"><p>sure you could run them in parallel to get a 2 ohm load at the amp, it's no more wear on the amp. 2 ohm is only making the amp run more efficiently. as far as crossovers go at that point, there's no way to implement an active crossover and hook up tweeters and woofers in parallel to get more power. you could at that point use the capacitor bass blocker filters for the tweeter, but as far as i've seen, there isn't any low pass or trebel blocker filters. these also, from what i've seen, handle 50 watts rms. also, these are considered passive, not active. the only way to go active would be use 2 2 channel amps or a 4 channel amp for the fronts along with the active crossovers (hu, external processor). i guess it does require more power than using the passive crossovers that come with the components. for example, with the passive crossovers (my focal 136v) the woofers is getting everything below 3500hz is getting at 70 watts rms. the crossover splits the power for the frequencies so the tweeter is getting everything above 3500hz at 70 watts rms. my rear speakers are 2 ohm so they're getting probably around 110 rms (alpine rates the amp at 70x4 @ 4 ohms and 100 x 4 @ 2 ohms, i figured it's probably a little higher than that for the 2 ohms, 140 rms would make sense but i've got it turned down as to not overpower my front stage, which it still does<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite3" alt=":(" title="Frown :(" loading="lazy" data-shortname=":(" /> ). if i were to run my front as active, the rears would no longer get power from my 4 channel amp, and actually probably not even get used. because the focals are 4 ohm, the woofer and the tweeter are both 4 ohm. this means that each component, when hooked up to my amp would be pulling 70 watts rms, give or take a little for minor adjustments. before the fronts were only requiring 2 of the 4 channels of my amp for a total of 140 combined watts rms. now they're taking up the entire 4 channel for a total of 280 combined watts rms. technically it's twice the power to get the flexibility of an active setup. however, the tweeters are still getting 70 watts in their frequency range as are the woofers. it's not going to sound like twice the power, but with proper tuning, it will sound a lot better. i hope this is a good explanation as to how this works.</p><p></p><p>as before, if you can correct it or say it better, please do.</p></blockquote><p></p>
[QUOTE="ejschultz, post: 5957126, member: 603800"] sure you could run them in parallel to get a 2 ohm load at the amp, it's no more wear on the amp. 2 ohm is only making the amp run more efficiently. as far as crossovers go at that point, there's no way to implement an active crossover and hook up tweeters and woofers in parallel to get more power. you could at that point use the capacitor bass blocker filters for the tweeter, but as far as i've seen, there isn't any low pass or trebel blocker filters. these also, from what i've seen, handle 50 watts rms. also, these are considered passive, not active. the only way to go active would be use 2 2 channel amps or a 4 channel amp for the fronts along with the active crossovers (hu, external processor). i guess it does require more power than using the passive crossovers that come with the components. for example, with the passive crossovers (my focal 136v) the woofers is getting everything below 3500hz is getting at 70 watts rms. the crossover splits the power for the frequencies so the tweeter is getting everything above 3500hz at 70 watts rms. my rear speakers are 2 ohm so they're getting probably around 110 rms (alpine rates the amp at 70x4 @ 4 ohms and 100 x 4 @ 2 ohms, i figured it's probably a little higher than that for the 2 ohms, 140 rms would make sense but i've got it turned down as to not overpower my front stage, which it still does:( ). if i were to run my front as active, the rears would no longer get power from my 4 channel amp, and actually probably not even get used. because the focals are 4 ohm, the woofer and the tweeter are both 4 ohm. this means that each component, when hooked up to my amp would be pulling 70 watts rms, give or take a little for minor adjustments. before the fronts were only requiring 2 of the 4 channels of my amp for a total of 140 combined watts rms. now they're taking up the entire 4 channel for a total of 280 combined watts rms. technically it's twice the power to get the flexibility of an active setup. however, the tweeters are still getting 70 watts in their frequency range as are the woofers. it's not going to sound like twice the power, but with proper tuning, it will sound a lot better. i hope this is a good explanation as to how this works. as before, if you can correct it or say it better, please do. [/QUOTE]
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