[BoomieMCT]

If the Fs of the driver is 25Hz, why tune the sonosub to 18Hz (especially since it will need a monster port)?

I know most people make EBL or LLT subs out of sonotubes, but you don't have to.

Tate 10, is your intent to have an EBL or just a sub made out of a cardboard tube?

 

[BoomieMCT]

As you say, it doesn't need to be tuned that low, just trying to get the most out of it.

I just thought driver output tended to drop off below Fs of the driver. Since this is a 10" sub I figured one might tune a bit higher to limit how much you'd need to cut the higher frequencies to keep the FR flat.

Of course I don't have Unibox at work so I can't back up what I'm saying.

 

[BoomieMCT]

Here's 3 different models. All with 500 watts input, HPF to control cone excursion, port lengths are 32 inches long and up. 2.5 cu.ft.tuned to 18 hz would give the most low end output at 20 hz and below for a HT application.

View attachment 12206

Yeah, in my opinion (and we all know what free opinions are worth) I think that while the orange line does not get into the 20 Hz area at all it does make better use of the given driver's capabilities. Since you aren't going to be thumping much at 20Hz with a 10" cone and 22mm of xmax anyways I'd rather optimize the area where it can play well.

But, again, that's just my opinion.

 

[BoomieMCT]

Yes, I know what you mean! I got mine too! :bigsmile:

Orange is 101 db at 20 hz, green is 106.5 db at 20 hz. It depends what you want. :yes:

Out of curiousity, what does cone excursion look like at those output levels?