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Question about Sub Amp

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Old 06-03-2009, 06:41 AM
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Question about Sub Amp

Hey I just have one quick question about connecting an amp to a subwoofer. I just bought a sub and I am looking at an amp right now. The seller says the amp doesnt have a "crossover" so it wont work for my sub. Is this true? What is a crossover exactly? Can I get one really cheap and install it myself? Thanks!
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Old 06-03-2009, 10:49 AM
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It's just so much easier to buy an amp that has a crossover built in. A crossover cuts the frequencies that the sub shouldn't be seeing, out of the signal.
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Old 06-03-2009, 11:26 AM
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Also known as a High Pass\Low pass filter.

You can get them seporate, but in the interest of keeping things neat, it would probably be better to get it built into the amp, less wireing. Look around, you're not going to pay much more for an amp with a built in crossover.

What amp are you looking at currently?
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Old 06-03-2009, 12:45 PM
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What HU do you have ? Does it not have a low pass crossover on board ? Or to keep it simple, just provide us the model number (assuming it is aftermarket).
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Old 06-03-2009, 02:46 PM
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Originally Posted by MadMax07SL
Also known as a High Pass\Low pass filter.

You can get them seporate, but in the interest of keeping things neat, it would probably be better to get it built into the amp, less wireing. Look around, you're not going to pay much more for an amp with a built in crossover.

What amp are you looking at currently?
Im looking at the Optimus on this page... its only 170 watt but Im only powering 1 10 inch sub... ill look for another deal

http://forums.maxima.org/audio-video...akers-ect.html

Last edited by Gman8990; 06-03-2009 at 02:53 PM.
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Old 06-03-2009, 02:50 PM
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Originally Posted by Pearl96Max
What HU do you have ? Does it not have a low pass crossover on board ? Or to keep it simple, just provide us the model number (assuming it is aftermarket).
I have a Double Din JVC KW-XG700... Here it is on crutchfield...

http://www.crutchfield.com/p_105KWGX...wxg700&tp=5684


I noticed it says that it has Sub PreAmp Outputs... is that a crossover?

Last edited by Gman8990; 06-03-2009 at 02:52 PM.
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Old 06-03-2009, 03:54 PM
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Originally Posted by Gman8990
I noticed it says that it has Sub PreAmp Outputs... is that a crossover?
Yes...

Originally Posted by Crutchfield Freature and Spec Dictionary
Sub Preamp Output: Individual number of RCA outputs that are coupled with a built-in low-pass crossover for connection to a subwoofer amplifier.
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