Hi everyone, I have 4 Cerwin Vega speakers from my father and am having trouble powering them. I am going to list my current set up and any feedback on what to do or other amp\/receiver options would be greatly appreciated.\n\nBelow are the descriptions I have found:\nCerwin Vega AT-8\n# 061101. 2 Way with 8" woofer.\nFreq Response: 28Hz - 28kHz.\n250 watts.\nImpedance 6\n\nCerwin Vega D-9\n# 414147 3 way with 15" woofer\n5\/450 watts\nNominal Impedance 8\nMax Output 125 dB\n29Hz - 20kHz\n\nYamaha\nModel#: RX - V667. Seriel#: Y262170SU\n120V ~ 60Hz\n400 watt\n500 Va\nImpedance 6: Front 4 min, Others 6 min\nImpedance 8: Front 8 min, Others 8 min\n\nJVC\nModel#: Rx - 888V. Seriel#: 114C2185\n120V ~ 60Hz\n320 watt\n420 Va\nImpedance 8-16 : 4-6 Low, 8-16 High\n\nCurrent set up:\n- Smaller AT-8 ran through Yamaha into R & L Front\n * Other options: Center, Surround, Surround Back\/Bi-Amp, Extra SP Zone 2 + Presence\n- Larger D-9 ran through JVC into R & L Front\n * Other Options: Center & Rear\n\nOriginally had all 4 going through 1 receiver and only listened to a turntable. Turntable currently getting ground wire fixed. That receiver went bad, and had a music head do the current set up. JVC has the two AT-8, and the Yamaha have the D-9.\nRunning both sounded like the volume was changing on its own, and had fuzzy buzzy distortion. Ran only the JVC with the AT-8 and had the similar problem. Even doing just the Yamaha with the D-9 didn't have great sound.\nWas playing music to test them from a phone into the phono.