Question about Kenwood KFC-W3003 Car Subwoofer

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I have two 12" kenwood KFC-W3003 4 OHM 600 Watt Maximum Impedance. I have them both in a sealed box with a divider in the middle, it sounds good and loud but i want deeper bass that will make your ears start ringing. What type of box should i use?

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The cheapest way is to get a prefab box from sonicelectonix.com get it ported im hittin 130db with mine in a 2.3?cu ft center port(one big chamber). litterally my fiance cant drink anything cant smoke a cigarette, and all hell breaks loose when i have the window cranked and throw 400w rms at the pair so bout 200 ea. and that my friend makes my ears hurt very bad and they actually hit harder than my older style RE audio subs.

Posted on Oct 12, 2010

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off the same amp? you have two way different sounding speakers man. you can buy 2 identical speakers from the same company and brand and series and they will play differently every time. you have 2 speakers with nothing in common so you will hear a difference and maybe interference because of the different ohm levels.

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It'll be plenty loud, but the amp will distort before the speakers do, particularly if your subs are wired in parallel (as dual-driver boxes are typically wired)

Listen for distortion, and turn it down a bit if the sound gets fuzzy or static-y sounding

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I got to 12 they are about 400 watts each what would be a good amp to put on it to lift the subs


Hello jeremymikjha,

Basically you want to match the subs in impedance and power.

With 4 ohm subs wired in parallel, the final load will be 2 ohms. Depending on how hard you want them to hit, a pair of 400 watt RMS subs will need an amp that delivers 600-1,000 watts into a 2 ohm load.

The enclosure you use will also make a big difference. A sealed enclosure will need more power. A ported enclosure will be louder with less power.

The Hifonics shown here would be a good choice for a sealed enclosure. It's rated for 1,100 watts RMS into a 2 ohm load.

http://www.sonicelectronix.com/item_17598_Hifonics+BXi+1610D.html

The Eclipse XA1200 outputs 600 watts RMS into a 2 ohm load. It would power the subs very well in a ported box.

http://www.sonicelectronix.com/item_17598_Hifonics+BXi+1610D.html

Somewhat less expensive but good quality would be one of the Alpine MRP series. The MRP-M500 is only $179.99 at SonicElectronix. It delivers 500 watts. It's big brother is the MRP-M1000 with twice the power. Be sure your subs are securely mounted or this amp will literally "lift the subs".

Hope this helps.

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