"Weekend band" PA systems are a niche market for small, powerful touring SR gear. Weekend bands need systems that are small enough to fit into a minivan or a car trunk, and yet powerful enough to give adequate and even sound dispersion and vocal intelligibility in a noisy club or bar. As well, the systems need to be easy and quick to set up. Sound reinforcement companies have responded to this demand by offering equipment that fulfills multiple roles, such as powered mixers (a mixer with an integrated power amplifier and effects) and powered subwoofers (a subwoofer with an integrated power amplifier and crossover). These products minimize the number of wiring connections that bands have to make to set up the system and they take less time to set up. Some subwoofers have metal speaker mount holes built into the top, so that they can double as a base for the stand-mounted full-range PA speaker cabinets.