What makes a subwoofer really hit low?

[dawgs007]

First off, I'm sorry guys for posting frequent topics. Once I started asking around on here, I realized that you guys know more than the average schmucks working at the shops around here, so, I am asking you guys all of my rediculous questions.

One of which now is, what part of a subwoofer system allows the bass to really hit low? My system, on about 25/35 volume, has a tough time even hitting 40hz, let alone hitting it powerfully enough to cause any sort of SPL.

I'm curious, in your opinion (or knowledge), what gives a subwoofer it's ability to roar at low freq.?

Thanks for putting up with me guys!

[OrionStang]

T/S specs and enclosure design.

Now use the search button and do some learning.

[dawgs007]

T/S specs and enclosure design.

Now use the search button and do some learning.

Call me an idiot, but what is T/S?

[EP95]

Box is one of the biggest factors, if your box is a prefab that's probably why it struggles with the lower notes, most prefabs are tuned in the upper 40's lower 50's if tuned at all.

T/S is the thiele small parameters, the subs mechanical and electrical characteristics

[OrionStang]

T/S specs and enclosure design.

Now use the search button and do some learning.

Call me an idiot, but what is T/S?

Subwoofer t/s specs. Search bar/

[Cj Kumz]

The t/s and box tuning I assume. What subs you gat?? What box volume?? Tuning?? Amp??

[dawgs007]

The t/s and box tuning I assume. What subs you gat?? What box volume?? Tuning?? Amp??

2 12" RF P3D2

4.33 cu. ft. box. ported in center

NOT SURE ON TUNING (bought off Craigslist),

RF Prime R1200-1D

I would assume a change could be made (possibly in box?) to allow the subwoofers to hit lower. Am I correct? Again, they have a hard time hitting 40hz effectively.

[Ritch40]

id be curious to see how that port is set up inside that enclosure.

depending on port legnth the subs could possibly be loading right into the port. And that tends to create a lot of mischief.

[dawgs007]

id be curious to see how that port is set up inside that enclosure.

depending on port legnth the subs could possibly be loading right into the port. And that tends to create a lot of mischief.

The longer the port is (width wise, I assume?), the lower the freq. can be echoed throughout?

[alaskanzx5]

The p3 need to be in a box at about 4cuft net. Net is after all displacement such as, port, bracing and subs. Port area of around 60-70". Tuning depends on what you want but 35hz is usually a happy medium.

I'm guessing the box you have is a prefab. Pics would help us though.

If its a prefab I'm assuming the port is around 4" wide x 15" high. But the where the port turns it turns off the back wall towards the front on both sides of the box and only about 1" wide.

This would create lots of unloading issues and port noise. Not to mention no freq response.

Post pics and measurements of the box.