What's a home theater without a good sound system? That's right. I missed watching a concert on DVDs. My two-year-old speaker on the left side started to create an annoying noise every time I turned the volume higher. At first, I thought it was my amplifier has a problem, but when my cousin, who is a technician checked my sounds system, he found out that the left speaker has a problem. I can still watch videos, or sing to my karaoke, but I cannot turn the volume higher. So, I was planning to buy this line 6 spider iv when budget is available. I can't live without my home theater, so I will buy this new speaker soon.