Hey guys, I don't know a lot about setting up sound systems so please forgive me. I have a Pyle PT584BT speaker set and a Yamaha RX-V381 receiver. I Have hooked up all 5 of the speakers and the sub(via sub out rca type wire) to the receiver and for some reason I get no sound from the sub. I have searched everywhere and I have tried probably every option on the receiver and the sub still produces no sound. I then hooked up the left and right output of the receiver to the left and right input of the sub (with speaker wire) and still had no sound. I then decided (while L and R speaker wire was plugged in to the sub) to also put in the sub out from the receiver into sub in on the sub woofer. This setup caused the sub to produce sound. The issue with this setup though was that once I got it to about medium volume, the receiver would shut off. Any help figuring this out would be appreciated.