bah??? Um.....the only way you can 'adjust' the ohms on a speaker is if it's dvc you can wire in parallel or series to 'change' the ohms (notice the quotations). There is no magical dial you can turn to change the resistance on a voicecoil. It is how it's made. If a coil is made with a 4 ohm resistance it's four ohms, if it's made with a resistance of 2 ohms, it's 2 ohms. PERIOD. That's like saying you can adjust your skin color by twisting your nipple. Clockwise for lighter, counterclockwise for darker lol. The old strokers came in dual 4's and dual 2's, hence their 18d2 or 18d4 product names. I'm sorry man but maybe you have to be more specific on what you mean by 'adjust the ohms' on a sub because right now you're making no sense.