Every TV maker trying to avoid total commoditization has a special trick to keep its designs unique and worth a higher price. For JVC, that trick is sound. It's launching the BlackSapphire line of LCD-based 3D TVs with the 55-inch, edge LED-lit JLE55SP4400, whose signature is an unusually powerful built-in audio system: the 45W system and 3D processing supposedly produces surround sound without having to line the living room with extra speakers. Odds are that the set won't provide much competition for
