You should be able to. You don't need to remove the rectifier, just connect the DC voltage up to the AC terminals. The rectifier will only pass it in the correct direction. Removing the rectifier will improve the efficiency a little, but that's it. The chip accepts DC voltage from ±12.5 V to ±40 V (though you need to check that the rest of the board can handle the voltage), and the rectifier will drop the battery voltage by 0.5 V or so.
Is the TDA8950 going to come In a mono 1 channel version in BTL for a sub woofer amp http://www.aliexpress.com/item/Prom...ever-Finished-amplifier-board/1634776193.html ,or would something else be a Better Candidate.
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