Need some help

[Matthew Williams]

Can any of these 18in woofers fit with these specs? If not I believe I can downgrade too the same style subwoofers except as a 15in. My planned tuning frequency would be 27 - 30hz

This is not intended to be a versus post. Please dont turn it into that. 

35L X 21W X 19H

http://www.ficaraudio.com/product/q-series-q18neo/

http://www.ficaraudio.com/product/bl-series-bl18v3/

https://www.skaraudio.com/collections/zvx-series/products/zvx-18v2?variant=17690909889

http://www.dcsoundlab.com/level4

[Triticum Agricolam]

Its pretty unlikely you are going to have a enough space to run any of those subs properly.  What vehicle is this for and how much power are you going to be running? 

[Matthew Williams]

2013 Ford focus hatchback running a cresendo s1500

[Matthew Williams]

Any ideas?

[Triticum Agricolam]

1 hour ago, Matthew Williams said:

Any ideas?

Run a 15" sub. 

[Matthew Williams]

Thinking of running the Q since I want to have the tuning around 25 - 27hz

[Joe X]

You can run a a Sundown Zv3 18 which will work in very small airspace, you can also increase your box height, if you could manage to do 22H you could reach 5 net which would be minimum for those subs, also, finally you could opt for two 12s, I am sure two SP4 12s could do more damage than many single 18s.

[Matthew Williams]

Thats right I keep forgetting about that option. Two 12s have more surface area than a 15 if I remember correctly. Would it still work for how low I want to go?

[Triticum Agricolam]

45 minutes ago, Matthew Williams said:

Thats right I keep forgetting about that option. Two 12s have more surface area than a 15 if I remember correctly. Would it still work for how low I want to go?

Yup, should work fine. 

[Matthew Williams]

ok thanks guys!