Anyone running these? I am looking at an unloaded box that I will fill with (2) 10's possible JL Audios. I am wonderinn if the air space is adequate and how well they perform

 

Trash, had one. Get the Subbox, fits two 10"s and no complaints, other then the service.

 

The thunderform has enough airspace for about every 10" on the market and even most 12"s. 1.8 cubic feet is a lot of space. Your only concern is fitting the mounting hole and the depth. All the JLs except the w6v2 and w7 should drop right in.

 

If you want to use JL's, why not get one of their Stealthboxes and use the correct speakers in it? If you want to use an MTX, why not use the MTX subs that are recommended? It seems to me using them otherwise wouldn't be using everything to it's optimum. Just my opinion.

 

You don't have to worry about "matching" recommended speakers. The concern with any box is the volume it supplies and it's mounting depth. As long as you use subs that are designed to operate in that volume and you have the right amount of power accordingly, you'll love it.

Examples, in general:
Smaller volume, near the minimum allowed for the sub= tighter bass (double-bass hits, etc, rock) but requires closer to the max amount of power to play the lower notes

Larger volume= lower bass with less power. However, to move the sub fast enough for tight hits, requires again, more power.

So it depends what you want out of the subs. For tight bass, use a smaller box, and you can get away with buying a little less power. For low lows, use a larger box and still not have to use as much power.

hope this helps

 

I ran an MTX thunderform for about 4 months, there are some serious issues with the boxes that no one here seems to talk about. The boxes regardless of air volume have open space between the two subs. This for most people that can read is not a problem, but if you happen to make the slightest mistake in the wiring, the subs will cancel each other out a good bit, thus lowering your SPL and volume. Secondly the boxes are made out of thin 1/4 thick plastic, which leads to a lot of flexing, thus distorting the sound ALOT. I ran 2 kicker comp vr's in one of these boxes with a 500 watt alpine digital amp, the box flexed so much I could barely discern what was bass and what was box vibration. It sounded like crap. I installed the P-FB-2-10 box from probox with the same exact setup elsewhere, not only was i able to measure a 8db increase in sound volume, but distortion was minimal. Now I can take a full coke can unopened of course and put it in the cup holder, when I roll my windows down a bit and crank the volume I can literally make the coke can jump out of the holder, now that my friends is hard core bass, just keep typing to me though cause I can't hear sh*t =).


Seriously, save yourself some money and do it right the first time, you can get the proboxes for 90-110 dollars, they have tons of local vendors around the nation, and have the best darn customer support I have ever run into period. If you get the box and for whatever freaky reason do not like it, probox will happily refund your money.

Chris