Help , i need some tips for SPL in my Sentra B15

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Hello people, im from Honduras, and this sunday im going to a competition with term-lab in dash.

And i have a Nissan Sentra 2005 , my system its a Crunch MXB 2300i 1200w-300wR.M.S

My subwoofer its a Pioneer Premier "12" 1000w peak and 600wRMS

i have all electric stuff stock.

And my wiring is 4 gauge

I do 138.7 tone 43-47hz, but i know i can get better.

Thanks for the help, and sorry for my english

[Davecubs14]

That's a really good score for what it is imo, have you read the spl gains thread? If you Google spl gains smd it should pop up, a great read. I'm sure you can type in spl tips on Google and get a lot of results. I'm not familiar with cars so I don't want to sway you the wrong way but in my Blazer, I have success with sub up, Port to driver side if metering is on passenger side.