SPL competitions/measuring

[onebadbird]

I just bought a digital sound level meter from my local radio shack, to measure my and my friends systems. In SPL competitons where do they measure from? Someone told me it was like 7 inchs in front of the HU. Is this true? Also what is a respectable score for 2 12's? I hit 116.2 with my crappy POLK GNX 124's wired in 4ohm. On a RF POWER 550S. I need better subs though, because they are to weak for the amp in 2 or 1ohm mode. It seemed pretty dang loud, until i searched around and found people hitting in the 150s with 2 12's. I plan on upgrading to Punch Hx2s and a cap in the near future. Hopefully this will help me hit a little harder. anyone have any suggestions for gaining some spl with the setup i am currently running? Any help would be greatly appreciated...

[Big Tymer]

Depending on the car is where they mount it. At some drags they give u a choice. In a F-Body the best place to mount the Mike is on the passenger side up between the windshield and the dash in the bottom corner... hope that helps..

with 2 12's i had some pyle pro 12"s and i was hitting 132 with a 400 max 200 rms watt amp... so im not sure wut is going to be a good score. after that i stepped up to 2 15"s same brand and style and i hit 142 with a 600 rms 1400 max amp. After that iv got 2 18"s Eminence Kilomax with a 3000 watt max 2000 RMS amp. SPL/DB unknown at the monet, I cant find a meter at any shop that goes over 150 and the next db drag within 200 miles from me isnt untill feb...

[ December 28, 2002: Message edited by: Big Tymer ]</p>