Fast Delivery! The woofer makes a valued and stable impression. Fast assembly. But RCA cable needs to be purchased separately - of those whose Head Unit has a sub connector. With a good hearing and feeling something, you can use the woofer as super supplement for its bass response "underpowered" speakers. I use the sub in my T4 Womo and have placed him between the two front seats. Since he can properly generate pressure. Buy recommendation from me.