Can I run my sunfire cinema grand into 2 ohms?

I have 2 pair of infinity kappa 7.1 speakers.
Why not run them in series to keep the impedance at 8 ohms? I assume the Infinities are 4 ohm speakers?

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Research "The Apogee Scintilla Mod" for the Sunfire Amps

Drives Loads down to 0.5 OHMS IMPEDANCE