louder, truck or car?

car...

i had 3 12 infinity kappa perfects with a jbl 1200.1bp amp and when i had my 1996 honda accord i was at 139 db and when i moved all the equipment to my 2000 chevrolet s10 (same box, same amp, same subs) it was 136 db, but seemed louder to the ear....weird how it works but thats the way it is.

A buddy of mine had 2 DD 12's (3500 series) 2 crossfire 1600D's 2 Memphis coax (multisynce) H.O. alt. 2 batteries.

The subs were in a 9 cubic foot box in the bed.. with a cut thru, and a tonaue cover 153.6db.....

A 94 mazda standard cab...... cars are louder than trucks....where do you put a 9 cubic foot box in ANY car?

What if the truck isn't a regular cab and it is an extended cab truck or a full-cab? I definitely think it would be louder then. I know this is probably a little impractical to most people's situations, but it's just an example.

In SPL, when you hear of someone taking out the back seats and putting a wall of speakers in their vehicle. You don't hear about them putting the wall way in the back do you? Of course not, because that would be pointless! They would put the wall right behind the driver and passenger seats. This is kind of the same idea I would think for a truck. (excluding the reg. cab of course) With the speakers right behind the seats with the CORRECT setup I would think it would be louder in a truck.

The reasons for the loss in db stated above could be a number of things. My first guess would be this. He said he took it from a car and put it in a truck, with the same exact amplifier, subwoofers, and enclosure. Well, he originally setup his system to be played in the car he had. When he switched vehicles the setup could  have possibly been hindered. (in this case a loss of 3 db) If he was to change enclosures he could possibly make up that lost 3 db, and might even be able to yeild an increase in db. Many other factors could have played their part in this loss of db, but that's the first one that comes to mind.

I've heard a lot of hatchback style vehicles as well as SUV's. In fact, some of the loudest systems I've heard were in a hatchback, but then again I've never had a friend that went all out on a truck.... I'll soon change that!lol!  I set my goals high, and right now I'm working on a pretty impossible task. I'm aiming to compete in SPL with only one ten inch subwoofer in a truck. Sounds crazy, but I think I might just be able to hit the 140 db mark. (I'm hoping for higher than that, but lets not push it!) Anything is possible these days, right?

I understand the effect a hatchback and SUV give on a sub. The echo thing is very true, but if the setup is right, and only if the setup is right, I think a system might just be capable of hitting harder in a truck. I always say, setup is everything. The brand doesn't matter at all if the setup is incorrect! It's all about the setup. With the correct setup in mind, I think the truck would be the winner. Then again, I own a truck, so did you actually think I was going to go with the car?