You can, how it blends will depend on the amps used. Since both are from the same maker, it should work, but I have had issues doing this as different amps even from the same maker can respond differently at different levels.
You also realize you would only need a 2 channel amp right? Unless you were trying to maximize the balance across the front.
You also realize you would only need a 2 channel amp right? Unless you were trying to maximize the balance across the front.