i live around Houston, TX (Katy)

i am in process of finishing my system, need rebiuld box. is there location to go and have SPL test to know where i am standing level-wise?

i can sureley max out the radio shack unit!!!
i have app on bionic but how acurate is it really???

i can verify it is very loud and the bass shakes because i cracked my windshield but is that vibes or spl???

i just want to know if i have a chance at comps before i go to far only to find out they may laugh at me.

i have:
2-12" cvr's on 1600 mono 2.59 ft.3 sealed each spkr
2-15" cvr's each on own 2000 mono 2.97 ft.3 sealed each spkr

 

Get in touch with shops in your area and ask if they have a term-lab, and what they would charge to meter your car.