I'm getting ready to build a speakerpage kit and was going over their instrucions when I noticed that their assembly intructions have you stretching a tube of cloth around the entire speaker covering the recessed drivers with an end cap on top to hide where you tie off the tube. If I were to veneer the speaker and make a grill out of 1/2" MDF with black grille cloth stretched over it, would this hamper the off axis performance any since part of reason for recessed tweets is imaging. I wasn't sure if SCH didn't include plans for a grill because of the performance factor or simplicity of design factor? Would it make an audible diference either way? I'm new to all of this so I'm not sure how critical stuff like this is to speaker building.