Bow down to the king!!

[joe603]

WoW!!

[EW]

Meh

[Looneybomber]

It's impressive that he has two jackhammers, however, why is he mix and matching 8500's with them?

Videohttp://www.youtube.com/watch?v=qrHu0XOhQDk
Modified by Looneybomber at 4:16 AM 9/19/2007

[joe603]

Not sure...but that truck was nice! It had 5 alternators, 4001 amps (didn't take a pic of the amp rack....DOH!)

This was the first jackhammer I've seen installed...the damn thing weighs 370lbs, each!!

[EW]

Maybe the jackhammers were tuned low and the 8500 tuned high.

[Looneybomber]

Maybe the jackhammers were tuned low and the 8500 tuned high.

I can see doing that with extreme home audio systems since they're required to reach to 10hz and sometimes a little below (War of the Worlds has a lot of 5-7hz energy when the machine pods emerge. It's pretty much the quintessential movie scene by which all home subs are tested with). So it could be possible to have one sub cover the 5-20hz area (2 octaves) and another for the 20-80hz area (2 more octaves)

In car audio, your sub covers two octaves 90-22.5hz at the most. Typically it's closer to 90-30hz which is only 1.5 octaves, roughly. A sub should have no problem covering 2-2.5 octaves. Having one sub run the 20-40hz octave and another run the 40-80hz octave brings in a big hassle since at 36-45hz both subs will be competing for or against each other. Due to driver spacing and boundary reflections, each frequency could have a different effect making it impossible to tune a flat response for both the driver and passenger.

That is why I say in extreme home theaters. There is a huge hassle in dealing with two different subs of different tune. In a house, you have thousands of possibilities with sub locations, the number of subs and seating locations. 6" can make a difference. In a car, you're stuck.

[PoorManQ45]

Looney: I think they did it just because

Depending on the size of the main speakers they could have ran those 8500s up to ~200hz. This would take a buttload of stress off of the mains to try to keep up with those jackhammers.

Honestly though, for the cost of that setup both you and I could build something that would make those MTX guys cry.

[Looneybomber]

Looney: I think they did it just because

Depending on the size of the main speakers they could have ran those 8500s up to ~200hz. This would take a buttload of stress off of the mains to try to keep up with those jackhammers.

Honestly though, for the cost of that setup both you and I could build something that would make those MTX guys cry.

You're probably right. Whoever said a show truck had to be practical.

But running them up to 200hz, that splits the males voice. I couldn't imagine how that might sound. Oh well, like I said. Show truck.

[Broadfield]

Meh

Yeah, after being in the business for so long, I just don't get impressed by much. Actually, that's not true...... she does have very nice legs

[PoorManQ45]

But running them up to 200hz, that splits the males voice. I couldn't imagine how that might sound.

well, that depends on how well the crossover is setup. If done properly, the only thing wrong would be that that section of the vocals would be coming from behind you.

Don't forget, old three way home speakers used to run a 12" driver up to ~1khz to be crossed over to a ~6.5". The only difference is that with the home speakers all the drivers were vertically aligned and infront of you to provide proper imaging.

[Looneybomber]

well, that depends on how well the crossover is setup. If done properly, the only thing wrong would be that that section of the vocals would be coming from behind you.

That's the problem. Like you've mentioned about home audio, the sound stage is entirely infront of you where it's supposed to be. If they were indeed crossing the 8500's above 120hz, that's really going to screw with any song by Barry White.

Anyhow, it's all speculation anyways right?

[98koukile]

What a waste of copper