How many dbs can i expect in a 2003 vw gti with 2 12' Diamond Audio D612D4 600 rms a peace wire parall to 1 ohm with a Diamond Audio D51200.1 1200 X 1 ohm.
Headunit is a pioneer avh7500. Box is a diamond audio design box http://www.topedgeonline.com/detail.aspx?ID=13610 Now if i sound proof the whole car would i gain dbs or just get rid of rattles or both?
