Amazon.com: Meinl Vertical Subwoofer Bass Cajon with Internal Snares - NOT MADE IN CHINA - Makah Burl Playing Surface, 2-YEAR WARRANTY (SUBCAJ6MB-M) : Musical Instruments
Meridian Audio - Our DSW.2 Subwoofer has robust internal bracing to ensure the cabinet is as inert as possible, to guarantee the only sound you will hear is from the 12" drive-unit. #
Powering an Internal Subwoofer and Woofer Linearity
TRU SPEC Prefab Single 12" Subwoofer Enclosure Sundown SA 12v2
Built in Speakers, Left & Right Internal Speaker A2442 .2inch ,Laptop Replace Subwoofer - Walmart.com