2-3 Weeks. 45 Day Lowest Price - 100% Satisfaction Guarantee. Complementing the AD120VTH are the 2 x 12" and 4 x 12" speaker cabinets featuring Baltic birch construction and newly designed custom-voiced Celestion speakers, dubbed "Neo-Dogs." The new speakers were designed specifically for VOX, and utilize highly efficient, ultra-lightweight Neodymium magnets. Both the AD212 and AD412 are capable of operating at 4 and 16 Ohms mono, as well as 8 Ohms stereo for optimum flexibility.