I installed an SC-88PRO about 3 weeks ago. It
replaced an SC-55. The sound quality of the patches was noticable immediately. Big change!! A few nights ago it started to sound
as though the sound was coming from behind a closed door. All patches etc. work but the sound quality is "muddied" compared to what it was before. Any ideas of something that would cause this? Thanks in advance for any
help. Milt Miermaster