Received some speakers today and hooked them up. I was excited to hear how they sounded. Initially only one speaker was playing and I thought it sounded kinda muddy. Then I found one of the wires for the other speakers wasn't connected properly. I reconnected it and that speaker sounded fine so I investigated the muddy sounding one. It appears that the tweeter dome has been smashed in. Can I get replacements for it? I guess while I am at it, are replacement powerports and grill available too?