Weapon of Mass Destruction


Here is my DIY octagonal subwoofer, Grond.

Named after the battering ram used to destroy Minas Tirith's Gate during the Battle of the Pelennor; which took its name from Morgoth's Hammer of the Underworld.




Dayton 12" DVC Subwoofer Driver 




Rear panel view





Baseplate with thread rods through the dowels




Interior with bracing half way up




Grond in disguise


Net internal volume: 90L

Shopping list:

Parts Express:
DAYTON 12" DVC SUBWOOFER - Part Number 295-185
GOLD PLATED BI-AMP TERMINAL - Part Number 260-304
3" x 11-1/2" PORT TUBE DUAL FLARED - Part Number 269-932