I have an RCA surround sound system - model no. RT2760. The receiver is RT2760 home theatre receiver., Receiver and speakers are 4 ohm. Equipment specs = amplifier section: RMS output power: dolby mode with 10% total harmonic distortion. All front, center and rear channels are 120 watts 1 KHz, 4 Ohm. The subwoofer channgel is 120 watts (100 Hz 4 Ohm) Total RMS output power, dolby digital mode: 720 W. I want to replace at least the center and subwoofer speakers). What are my options. Can I use 8 ohm speakers (or 6 or ?) with my 4 ohm receiver?
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