Need help for enclosure design

[Csloo]

Hi all, I am new here, and I am totally new in diy speakers and subwoofers, so I am seeking help from the masters here.

I have an extra SVS Bash525 plate amp and a Velodyne cht15q driver with me, I wanted to build a sub with them, but I have no idea about the frequency, the q, the v and the other measurement terms of it, i tried download winisd and others, I just can’t understand how to fill in the figures and read the graphs...

So I am asking a favour from the kind souls here to help me to design an enclosure form me, I have limited space, the most I can accommodate is 18”x18” floor space, but I can built it tall, up to 45”. I thought of a tube type but I can’t find any 18” diameter tube here, so I was thinking if it’s ok to built one which is square but tube like tall type.

Thanks in advance!

 

[GM]

Without the driver's T/S specs, can only recommend DIYing the factory cab, i.e. converting its internal volume to fit your space limitations and using its vent tuning if not sealed.

GM

 

[Csloo]

Thanks a lot!