Set the Velodyne crossover to its highest frequency setting, letting the preamp take care of the crossover duties.
Amp sub crossover and a sub crossover
My McIntosh preamp has a switch for the sub to cross at 80 hz---and my Velodyne has a variable crossover. So if I want to cross at 80hz. Should they both be a 80hz???Where should the Velodyne be set??