Ok qgkdThat sub is nowhere near ideal for what should be used in a t line.
You don't drop any sub into a t line style enclosure, there are specific parameters that make one sub more or less ideal than another. If you want help, start off by learning basic enclosure theory before jumping off into the complex stuff like horn and quarter wave theory.
Honestly thank you i was told by some guy in my town to make a tline box for the sub but i did my research after ur response of u mind what is your recommendations in building a custom box for the svx-8I am wanting help with design custom tline for a
zvx-8