I have a basic two turntable set up. I connected my DJ-Tech DJM-303 mixer to my Onkyo Reciever. I used two RCA cables from the Output Master on the mixer to the Line In on the reciever. Theres no sound. Should I be using the balance output and buy some 1/4 adapters for the RCA cables. I love this mixer and I'm so stuck. Please help?