What are these specs?

[Montana]

A friend of mine drew this up, just wanted to verify his specs are right, what Hz and cubes does this come out too?

View attachment 26537018

Click to read more...

 

[Kadori 10+ year member]

you're getting ~3 cubes with a tuning freq of ~45hz

Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators

a tuning freq of 30 - 32hz is usually considered desirable

if you want to plan your stuff out i would suggest using both the above link and winISD