![4. Transmission Line (T-line) Box - Custom Design Blueprint - Sound Authority & High Output Enclosures 4. Transmission Line (T-line) Box - Custom Design Blueprint - Sound Authority & High Output Enclosures](https://cdn10.bigcommerce.com/s-xvweg/products/176/images/1294/SA_t-line_example_sub_port_rear_firing_15_xray__59913.1635798316.400.400.png?c=2)
4. Transmission Line (T-line) Box - Custom Design Blueprint - Sound Authority & High Output Enclosures
![Question on T-Line boxes - Subwoofers / Enclosures - #1 Car Audio Enthusiast Forum in the world! | SMD | Meade916 Question on T-Line boxes - Subwoofers / Enclosures - #1 Car Audio Enthusiast Forum in the world! | SMD | Meade916](http://farm5.static.flickr.com/4063/4527571770_906a1bd997_o.jpg)
Question on T-Line boxes - Subwoofers / Enclosures - #1 Car Audio Enthusiast Forum in the world! | SMD | Meade916
Help me understand my 15" T-line subwoofer and how to make it better | DIYMobileAudio.com Car Stereo Forum
![12Voltronics.com on X: "More Car Audio:#Logitech #box #mod #Line #T-line #8 #inch #subwoofer #cinema #home #audio #20hz #30hz #25hz #hz #ba… http://t.co/7jcnAE3mvM" / X 12Voltronics.com on X: "More Car Audio:#Logitech #box #mod #Line #T-line #8 #inch #subwoofer #cinema #home #audio #20hz #30hz #25hz #hz #ba… http://t.co/7jcnAE3mvM" / X](https://pbs.twimg.com/media/B-dVHzxIMAAxGDI.jpg)