Design for my AQhdc3 18"

[GrandCherokee 10+ year member]

I just bought the sub/amp

Let me know what you think...Im most likely going with this design tuned to 35hz

But Ive heard I should go with a box tuned to 38+hz

So Im not sure...//content.invisioncic.com/y282845/emoticons/confused.gif.e820e0216602db4765798ac39d28caa9.gif

I know its made to but in enclosures tuend to 38-40hz but hows 35hz?

Click to read more...

 

[bball09124 10+ year member]

Why are you so set on 35 hz? AQ probably recommends 40 hz tuning for a reason, they did build the subs after all.

Other then that, the design looks good.

 

[GrandCherokee 10+ year member]

I just heard different opinions and wondering which ones are right

 

[GrandCherokee 10+ year member]

should i get a designed tuned to 38?

 

[mlstrass 5,000+ posts]

I've run the 15's with both tunings and currently am at 38Hz. When the subs were new 38Hz was a little boomy on the music I listen to, so I dropped it to 35Hz. Now that the surrounds have loosened up I went back to 38Hz and can't tell a diff in SQ.

On the box I'd double baffle the top and add a brace of some kind in the middle of the rear wall...

 

[tapout383 10+ year member]

Got this from chris IonSQL he email DJ and he responded with this "Chris the 18 does great in 5.5-6.0 net tuned at 38hz. The sub needs 16 sq"'s of port area per net cubic foot of net volume. Port length is 20" for 38 hz when using 16sq"'s of port area per net cubic foot of box volume. For a little more SPL shorten port to 16" for 40 hz tuning."

 

[GrandCherokee 10+ year member]

i think the sub will get insanely loud/low tuned to 35hz but i might be wrong...

 

[mlstrass 5,000+ posts]

It will also do that at 38Hz...