Turbo question
 

hi all friends

let's see the plan and input HR parameter, i got from another website. last week my friend installed P.AUDIO C 18-650 EL with this turbo plan. and had a lot of problem. when he walked more than 6 m from the turbo box. the sound was not has the power of bass. but when i sim with this input. it will be ok. friends please let's me know where the input is wrong? now i surprise that where is s1:)

and this the respond frequency

Things that come to mind in no particular order:

1) Have you measured the box, is it just a perception thing?

2) The layout is similar to the real thing, but the proportions look slightly off from the original box IIRC.

3) The single 18" boxes really, really, need to be stacked in multiples, four a side is the minimum I'd use.

thanks pinkmouse i didn't measure. he ever used w-bin but tried to built small size box. i think he compared with w-bin but it was not louder like w-bin. now he break it and turn to build w-bin. yes he used 4 stacks/side for party job or bigger than party. pinkmouse i see at about 130-170 hz it looks like the valley slope, sometime this result makes it's louder like w-bin.:)