[Mike P.]

Which 10" Audiopulse are you referring to? Post the T/S parameters and we'll see how it models.

 

[Mike P.]

For this to work in a 12 inch sonotube you would either fold the port or let it stick out above the sonotube like a stove pipe. In 2.5.cu ft tuned to 18 hz, with 500 watts input power and a HPF at 16 hz, port air speed would be 30 m/s at 17.5 hz with a 4 inch flared port 38.75 inches long.

 

[Mike P.]

If the Fs of the driver is 25Hz, why tune the sonosub to 18Hz?

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

 

[Mike P.]

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.

 

[Mike P.]

But, again, that's just my opinion.

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:

 

[Mike P.]

All models 500 watts input, green 2.5 cu.ft. HPF at 16hz, orange 1.5 cu.ft. and pink 2 cu.ft. HPF at 18 hz.