I just set up my new Roku TV Wireless Speakers (9030R2). The left speaker sounds great, but the sound coming from the right speaker is rather tinny and thin with some background static. It's the same sounds coming from both, but the quality of the right is much lower. Even if my ear is right next to the right one, the left one is still clearer. How should I fix this? Do I need to exchange one of the speakers?