Hi, I am very new to this forum and I need help with my old Mackie MR5 mk2 monitors. I also have the Soundblaster Z sound card. Basically, some sounds simply don't play through these speakers. On some songs I can't hear any singing, others I hear no guitar. It's the worst when watching youtube, all sounds are very muffled and can't distinguish words. I tested playing songs through my phone to the speakers, and they worked perfectly, so I am confused as to what the issue could be. I have reinstalled my sound drivers on the sound card and there is no difference. I have no idea what is causing these issues, if anyone has any idea please let me know. (very uneducated here)