Based on the recommendations in this thread, I've ordered this. I quite like mine as a music player, and I thought the sound quality was adequate; if this dramatically improves it, even better.
Originally Posted by drs155
Before I got my Seidio battery door cover i used a tiny drill bit and drilled two rows of four each holes in the OEM batt door where the speaker is. It worked very well and looked factory with a little patience. I even did the dame drilling in my Seidio rubberized hardcase, matching the are of my holes with those already in the Seidio batt door underneath so i didnt loose the sound while adding the "armor". Sounds awesome. Patience + steady hands + drill = happiness
I'll give this a try, too.
Just make sure to remove the cover from the Blackberry before drilling.