What's your SPL?
 

Sound Pressure Leveel - dB ?

I hit a 127.8 w/ 2 Coustic 10s w/ 300w amp

:(

why the sad face? That's pretty high for 2 10's sealed at only 300W. It must be bandpass or ported. I've never measured mine, but other people with similar setups hit high 120's, low 130's. I have a single 12" Brahma sealed @ 800W.

I know a guy who hit 144dB with 3 JL W7s .... that was odd. I woulda thought he could hit 150 AT LEAST!

he easily could have hit 150. SPL is highly dependent upon how well your system is tuned.

how the measure it anyways? they stick a mic in the middle of the cabin? or up front near the windshield?

:nod:

I do a 450db.


















































































































































Did I mention how much I hate the SPL talk.

Check page 2 of my homepage, In competition I hit a 137 and my setup is all SQ no SPL, got a trophy too. My friend also competed and he has 2 10's in a sealed box, his fuse blew during competition and he still hit a 132. Check the links on my homepage.

Kevin

144.6 with my cadillac, running 3 concept's in a sealed 3 cubic ft. shared box powered by a Concept 800w Class D monoblock. The next day we got the correct amp, an Audiobahn 1200w monoblok, so it should be pushing 145.5.
THe system is set up for SQ and SPL, just switch off the interiors for SPL "mode"...

I hit a 141.5 db with my current setup:
1 - 12" Rockford Fosgate Power Hx2 Subwoofer, Ported Box @ 37hz, Crossfire VR1000d Amp running at one ohm

Hit a 144.5 with my old setup:
4 - 12" Rockford Fosgate Hx2 Subwoofers, Sealed Box, 2 Rockford Fosgate 225.2 Amps

i've hit 140.9 with my 2 12" Memphis studios sealed running off a kicker 400w mono

where do you guys get your spl measured at? i've seen some spl meters for sale, but seem kinda stupid for spending that much money for one.

I got metered at a competition one of my local shops was having. They used their USAC mic so i know my reading was accurate. Just go to a local shop and ask them if they know of any upcoming competitions.

car shows...

Usac reads high and is not always uniform.

There were people there that regularly compete there and they all got basically with in like .5db's or so of what they normally get. One guy before even testing said im gonna get a 150.6 he got a 150.6 then he remembered that his glove box was open and he goes now i'll get a 150.8 and again he gets a 150.8

It's pretty pre****atble once you get into it...But still Usac is known for having mic problems...Not discounteing any of the sad numbers claimed here...Just comenting...THe problem is alot of mics are not calibratied yearly, abuse, port wars...not using the L chig crap like that.

Yeah i get what ur saying

great

Whomever can break 150 dB is absolutley great. Thats when you know you have a loud system. :rollsmile

db
 

141 pushing a pioneer 15' and rockford fosgate 600.4.Haven't competed in a year but i have the same woofer and a different amp. I now have a rf 750x

belive it or not i went to the police to get mine measured, since our fine state of ny has a limit to the volume your car can be they will test your spl or exaust if you go to some of the precincts. i hit 132 with 1 solo baric l5 with a crunch 1k wat peark 500nominal 2 chanel

My old civic was doing 152.2 with two 15's before I retired it, and sold everything. I built an Escort that did 159.0 with 4 JL Audio 18's. I am doing 138.1 with 300 watts RMS, and 2 Kicker 12's in my Max through the ski hole. It is all in design and knowing your vehicle's resonant frequency and building a tuned enclosure that is a one note wonder. I have learned that SQ is much more important, and if it sounds good, that is what really matters.:D