A:AnswerThese speakers are not pre-amp powered. You have to have a receiver or amplifier of at least 50Watts RMS. These are hard wired (monster cable) with quick clips for connections. Your TV would have to have a RCA Audio output to an amp which then outputs to the speakers.
A:AnswerHi Matthew, the grills can be easily removed applying a gentle pressure by the side. As a personal preference, I like the sound more with the grill on, just because the overall tone is less harsh.
A:AnswerThese can be connected to receiver which in turn can be connected to a computer. I currently have my set being driven by a Yamaha receiver which is connected via optical to my desktop computer.
A:AnswerPioneer makes a 8 inch amplified sub, Model SW-8MK, that sells for 159.00, which is a great deal. They also make a 10 inch amplified sub, Model SW-10, that sells for 349.00,
also a great deal. I don't believe Best Buy carry either model.