Same Day Dispatch If Paid Before 11am. 2/3-Way Electronic Crossover, Remote Subwoofer Level Control. The item "BOSS AUDIO BX55 2/3-WAY ELECTRONIC CROSSOVER REMOTE SUB LEVEL CONTROL" is in sale since Wednesday, April 9, 2014. This item is in the category "Vehicle Parts & Accessories\Vehicle Electronics & GPS\Car Audio & Video Installation\Other Car A/V Installation". The seller is "elite_electronics_au" and is located in Sunshine West, VIC.This item can be shipped worldwide.