Problem with getting my 15" Fi Q to sound right.

[Trepkos 1]

Try reversing polarity on each voice coil one at a time. Sometimes manufacturers accidentally label them wrong.

That makes the most sense to me.

I actually just reversed the polarity at the amplifier, and played the same song and there was no real difference in output. I did it two or three times to make sure my ears werent tricking me.

But I dont think that it is a polarity issue with the voice coils since Ive looked at other pics of the subwoofers and the terminals look similar as in opposite of each other.

[KU40 173]

Switching the terminals at the amp does nothing for checking polarity if a voice coil is wired wrong in a DVC woofer. You have to change them on the sub. And just because they look right with the markings doesn't mean they aren't switched once the leads get into the voice coil.

[Trepkos 1]

Switching the terminals at the amp does nothing for checking polarity if a voice coil is wired wrong in a DVC woofer. You have to change them on the sub. And just because they look right with the markings doesn't mean they aren't switched once the leads get into the voice coil.

About to check that...

[Trepkos 1]

Ok well I did that and no improvements.

[ford302redneck 15]

Could be, the way the box is designed, isn't letting the pressure build up in the whole 3.3cuft before it leaves the port. I had a box very similar to that, and it didn't sound right. I say try a 2.5 sealed box. I feel it will generate better results than a misguided ported box.

[Trepkos 1]

Well I bridged my Sundown amp and wired the sub in series and hooked it up. It played with limited output, LPF set. gains at 1/2, Ive decided to go back to the drawing board and atm Im looking at the following.

2x 12" Fi Q's - 259x2

AQ 2200d Amplifier - 389

3.52ft^3 Dual Chamber enclosure(Which will provide me with leg room) - 150ish(custom built)

I can return the Hifonics amplifier and gain 199.99, I wish there was a way I could polish up that Fi Q 15" and maybe return it to Fi and pay maybe a few extra bucks and get a brand new Fi Q 12" in return since I don't really have a need for it. And the subwoofer is only about two weeks installed.

I do have no complaints at all with the Rainbows or the Sundown amplifier, the mids and highs sound amazing and the more I tweak them, the better they sound.

[Trepkos 1]

http://i251.photobucket.com/albums/gg294/S...ustomz/f150.jpg

Theres the enclosure design.

[dbjunior 0]

looking at the box in first posts and listening to the videos it sounds like when you turn up the volume the box is vibrating off the back of the sub like the box isnt deep enough try using a spacer ring and listen to it turn up the gains and such if you still get the distortion then idk if it just gets louder and no distortion leave the spacer.

[coobies5 43]

man, this stinks

you go to autozone?

im in north carolina now btw

[Trepkos 1]

man, this stinks

you go to autozone?

im in north carolina now btw

Yeah I did, they didn't really know what I was talking about, lol.