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<blockquote data-quote="Frraksurred" data-source="post: 81103" data-attributes="member: 544871"><p>You can do one of two things. First, what amp do you have? Many amps (generally the ones with built in cross overs) will also have a preamp output so you can run the signal to another amp. If this is the case you can add another amp while still only having one preout form your H/U. If your current amp does not have outputs you could also buy a 4 ch. with a built in cross over that has an output as well, and put it before the 2 ch. (provided your H/U's preout is not sub only). You could then run the 4 ch. at full range and set it's crossover to send low frequencies to the 2 ch.</p><p></p><p>The other solution would be to buy a cross over. You can put it inline from your H/U and set it to send mid and high frequencies (like 80hz and above) to your 4 ch. and low frequencies (under 80hz) to your subs. I'm assuming you're running your 2 ch. bridged to mono and the subs wired in parallel? I'd stick with the same brand of amp when you buy the 4 ch. and even try to find the same year model if possible. This will weed out any mis-matching problems</p><p></p><p>Again, don't forget the sound deadening material. The quality of the install can make all the difference. If you're fairly new at this check out this <a href="http://www.eatel.net/~amptech/elecdisc/caraudio.htm" target="_blank">website</a>, it has a wealth of information on it.</p><p></p><p>Come back if you have anymore questions. God bless you.</p></blockquote><p></p>
[QUOTE="Frraksurred, post: 81103, member: 544871"] You can do one of two things. First, what amp do you have? Many amps (generally the ones with built in cross overs) will also have a preamp output so you can run the signal to another amp. If this is the case you can add another amp while still only having one preout form your H/U. If your current amp does not have outputs you could also buy a 4 ch. with a built in cross over that has an output as well, and put it before the 2 ch. (provided your H/U's preout is not sub only). You could then run the 4 ch. at full range and set it's crossover to send low frequencies to the 2 ch. The other solution would be to buy a cross over. You can put it inline from your H/U and set it to send mid and high frequencies (like 80hz and above) to your 4 ch. and low frequencies (under 80hz) to your subs. I'm assuming you're running your 2 ch. bridged to mono and the subs wired in parallel? I'd stick with the same brand of amp when you buy the 4 ch. and even try to find the same year model if possible. This will weed out any mis-matching problems Again, don't forget the sound deadening material. The quality of the install can make all the difference. If you're fairly new at this check out this [URL="http://www.eatel.net/~amptech/elecdisc/caraudio.htm"]website[/URL], it has a wealth of information on it. Come back if you have anymore questions. God bless you. [/QUOTE]
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