HOLLY HILL, FLA., JANUARY 24, 2008: Metra Electronics introduces Katana, a new brand of competition-level mobile speakers and subwoofers that deliver the performance required to set records. The ...

View post: Amazon Has a Portable Handheld Welder on Sale for Just $80 Autoblog may receive a share from purchases made via links on this page. Pricing and availability are subject to change. Many cars ...

In smaller, portable audio systems, a subwoofer can produce a fuller and more balanced sound that defies the system’s physical limitations. (image credit: Rocksteady) Subwoofers are much more than ...