The bass of a pair of Avantgarde DUO's can be substantially increased and improved by the following means:
replace the subwoofer cords with Cardas Golden reference Power cords. This really sounds both nutsy and (slightly) expensive, but it really works and if you have enough money for DUO's you probably have enough for the cords. I was opposed to getting pricey cords til I heard them first.
upgrade the external wires to DUO 3.0 Cardas jumpers - available only from Avantgarde. (if you haven't done that already)
much much more warm bass!!
replace the subwoofer cords with Cardas Golden reference Power cords. This really sounds both nutsy and (slightly) expensive, but it really works and if you have enough money for DUO's you probably have enough for the cords. I was opposed to getting pricey cords til I heard them first.
upgrade the external wires to DUO 3.0 Cardas jumpers - available only from Avantgarde. (if you haven't done that already)
much much more warm bass!!