Hello, I recently purchased a THX select Yamaha reciever. For those of you who have done it I used the automatic setup (Yamaha Parametric Room Acoustic Optimizer) to setup my sound adjustments. Apparently the crossover frequency has been set to 200 Hz. I know that THX recommends 80 Hz. My question is, should I manually set the reciever to 80 Hz or leave it at 200 Hz which is what the reciever automatically set itself up for?