Why a Dual 4? I mean DC audio doesn't sell D4s for the lvl 4s If your planning on buying another sub, they need to both be D1s ran in series and then creating a 1 ohm final load
I know this guy in person trust me theres no problem at all hahaha, and btw ill be up in the marquette area in July in Chatham and Munising and AuTrain Lake