What is my box tuned to?

[neo_styles 10+ year member]

This is the only box I have until I get a new one made..
Should I build box to the specs of the manufactures ?

After doing some reading around, people say not to do that.

For sealed, just look at the recommended volume and build for that. Each sub should have its own chamber.

 

[Bettr n' Revrse 5,000+ posts]

This is the only box I have until I get a new one made..
Should I build box to the specs of the manufactures ?

After doing some reading around, people say not to do that.

What subs?