Dark Terror with 2 PPC412's?

[Anatar]

Greetings all, I'm a happy owner of a Dark Terror and Orange PPC412. I'm wondering if it's possible to add another 412 to make a full stack, and wondering what effect this might have on the sound and tone. I've looked on YouTube and elsewhere and I haven't found any mention of anyone doing this, so any insight would be very much appreciated. Thank you.

[bclaire]

Two cabs - no problem. Plug them into the two 8 ohm outs. Just make sure they are both 16 ohm cabs. It will sound "big."