Polk D112 Subwoofer (added)

H2O_Doc

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Just posting my newest toy: I replaced my 12 inch Rockford Fosgate sealed subwoofer with the Polk DXi112 ported subwoofer. I did this because I had the opportunity to pick one up for $60 new versus paying the regular retail price of $250.

While I liked my Rockford Fosgate a great deal, the Polk is a huge improvement. It is a 2 ohm subwoofer and the enclosure has a lot of volume, so it thumps pretty well with 500 watts rms powering it.

I didn't do this so I could have the kind of car stereo you hear coming from a mile away, but I wanted good-quality bass across a wide spectrum of music. Although ported subwoofers might not have the same tightness in bass that sealed models do, this thing really performs well.

Yes, I give up some trunk space, but this is easily removed if I need to haul stuff in the back. Also, I have a pretty good mix of other speakers including Polks (MMs) and Rockford Fosgates in the doors and in the tailgate, so even without a sub the bass sounds pretty good.

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sounds like a good deal. how much would a shop charge you to build a ported box for the fosgate? have you try switching the subs out and see which plays better? like swap the fosgate in that polk audio box.
 
sounds like a good deal. how much would a shop charge you to build a ported box for the fosgate? have you try switching the subs out and see which plays better? like swap the fosgate in that polk audio box.

I haven't tried that and wonder if the subs aren't tuned to the boxes, such that it wouldn't sound as good. I have a couple of audiophile friends and I know they have calculations for box volume and that the formulae differ in part based on the type of box (e.g. sealed versus ported).

These are the same friends that lectured me on which direction to face the sub based on the physics of wave propagation and acoustic something or other. Welcomed input, but I had other constraints like where my 7 year old's fingers could reach.
 
if you want a lil louder, turn the sub around so it faces the trunk, put the box on the driver side with the slant againt the seat and have the vent open and clear, see if u hear a gain, then you can use the fosgate sub in that box.what amp do you run for the sub?
 
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if you want a lil louder, turn the sub around so it faces the trunk, put the box on the driver side with the slant againt the seat and have the vent open and clear, see if u hear a gain, then you can use the fosgate sub in that box.what amp do you run for the sub?

Currently I am running Crutchfield's Sound Ordnance M1500. I went cheap as I got a good deal, but it seems to work fine. I have a Infinity Kappa Four for the doors, which is esthetically much nicer (and runs cooler).
 
just stick with the polk, more power means more louder. just make sure the sub is facing the trunck and have the port open and clear.
 

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