Audiophile Q.....Sub box

[Ted Z]

i have an 8" sony Xplod subwoofer that was in a Q-logic bandpass box, it sounded very good, but the box was crampin my cargo hold so i made a box that fits in the passenger rear fender from the inside.

The problem is now the sub sounds like crap, i had to turn the bass and the gain down a bit to keep it from "overextending" the cone.......

do i need to port the box? what now.....?

 

[Georgia Mike]

You need to find the subwoofer's "Theile-Small" parameters to make the correct enclosure for it. You can't just simply plug a woofer into a sealed box if it was designed for a ported enclosure,and vise-versa. If you can find the parameters for it,give them to me and I can run it through my speaker enclosure program and give you an acurate enclosure design. And don't let anyone tell you that ported enclosures sound like crap. People that say that have never heard a *properly tuned* ported enclosure. I've built many enclosures in my time and I,as well as my customers, have always been very impressed with the results of a properly tuned ported enclosure. Twice the output of one subwoofer,but the drawback is the enclosure is usually twice the size of it's sealed counterpart,and the when the sub gets to the tuned frequency of the enclosure,effeciency drops off like a rock in water. The tradeoff,however,is you can easily tune a ported enclosure to produce lower frequencies without rebuilding it. Ported enclosures are also easier on woofers (if it's tuned to a frequency lower than what is the norm for your type of music) as unlike in a sealed box,where the woofer moves more as it gets to the tuned frequency,a ported enclosure's woofer with move less (while maintaining a higher output) towards the tuned frequency. :lecture: I'll shut up now

 

[GI-John]

Jeez, and all I was gonna say was to find out what the sub's requirements were and build from there...

GA Mike rox....:guitar: :worship: