Amp output to 2 speakers

Each channel of my Proceed Amp 3 has a pair of speaker terminals. I've been using the pair of terminals of the LR channels to "biamp" large KEF R107/2s and using the pair of center terminals to drive a pair of small R102s. I think I'll be replacing the Amp 3 with a more powerful Proceed HPA 3 that doesn't have dual pairs of terminals for each channel. For LR, I'll just convert "biamp" to true biwire. But is it OK to connect the terminals of the center amp to both 102s. That is, two cables for each binding post of the center amp that feed separate speakers. The Amp 3 is rated at 250 watts per channel into 4 ohms; the HPA 3 500 watts. The manual for the HPA 3 discusses bridging and biamping techniques.

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