quick question: sub id like to have requires .65ft www.sonicelectronix.com/item_39835_JL-Audio-10W0v3-4.html box id like to have .70ft www.sonicelectronix.com/item_7563_Sonic-Sub-Box-1SL10-0.7-Gray.html is .05 cubic ft gonna kill my sound quality?......can i just add some padding to decrease box volume?