I'm stumped

My score with 3 15" mojo quad 1s, and 2 Memphis MC1.4000 my scores were ~158.3. So then I said maybe I need more power so I got 2 D9s on the 3 15s and hit a ~158.6. So then I said maybe I need more power so I ran 2 cactus 5ks and only managed a 158.4dbs. All the test were done with the amps strapped at 1 ohm. Each amp seeing .5 ohms. It seems that it doesnt matter what power I run I cant break a 159. My voltage I have a 250 HO Alt and 6 kinetik 16 volt batts. My voltage goes from 18volts to ~14volts. Is it 100% the box? Or can it be different things like my subs are at their limit in the box I have them in? I am using a 91 S10. What are your opinions. Jimbo and sanman dont be shy, go ahead and throw out some ideas. My next step is to run the same box as Sanman, Jimbo, and Ace Freely all did at finals. It does seem to work. Right now I am using aero ports and I was trying hard to make them work, but my highest score so far is 158.6dbs. I would hate to buy another Cactus 5k and run them at .25 ohms and still not gain. Thanks everyone. Oh freely feel free to chime in too.

pvc

FYI the cactus amps sweet spot is .66-.8 after imp rise.

your doing pvc ports?? hmmmm

no pvc ports for s10s

slot port lenght of the box id guess about 5 to 5.5 inches wide ,,i dont do s-10s ,, there is a angle needed but not sure the degree they use

I know its a little whacky, in my crx I was using aero ports so I was trying it in my s10. I mean 158 is not bad, but nowhere near good. My next box I know is gonna have the 25-45 degree angle and pvc on the bottom of the port going across. I was trying to make it loud with the aeros, so I guess I failed big time. Back to the drawing board. San Antonio heat wave Im gonna add 2 more aero ports, and for austin I'll totally build a new box with the slot port. Last try with the aero ports for this weekend. Kinda sad its got to go, but it seems like its time for a new box.

Thanks for the tips on the cactus amps. I dont know my rise yet, I still havent invested in a clamp meter. Oh and I forgot you hunter, thanks for your input, I know you know what your talking about.

here is a few pics