Hi guys. At last, after 1 month of auditioning different receivers and posting/reading questions/answers to forum, I finally went with Yamaha RX-V1400. MSRP is $799 and I got it for $608. Luckilly, I got a "Welcome to the Neighborhood coupon discount. Anyways, I am new to home theaters and want to really get into speed with it. I have read lots of post but still gets confused with terms used by people. What does crossover mean? Such as this , "cross my sub over at 80hz". And another one like this, "I used my receiver as pre-out(front), amp(rear). What does this words mean? Thanks in advance.