A friend of mine has a small PA business and has a rodeo coming up that he is providing a system for, so had some gear out to test. I thought it might be of interest to some so took pics and vids.
Whole lot is running off 3 2ch amps, 2000wrms per channel @ 2ohm. 2 400watt Power supplies can be seen under the desk but one is just a back up. Top component in the amp rack is a DVX Driverack, which is basically an adjustable 3 way crossover unit.
2 S4 speakers comprised of 2 15's, 2 10's with waveguides and a 2" horn.
Subs are 2 15's in a loaded horn known as an "S Bin". Didn't get a good pic but the vids show how basic they are. 7' throat, drop to about 30hz with authority.
This is with the volume at about 60%, it's maybe 5dB quieter at 100yards than it is 5 yards from the speakers.
diymobileaudio.com is the DIY car audio install forum for automotive quality and spl stereo bass. 12 volt audio installation wholesalers buy amps, subs, double din car audio head unit electronics and ipod blue tooth car alarms at discounted prices