An embodiment is a telecommunication outlet mounted on a printed circuit board including a vertical shield extension and an inner shield extension which protrude downwards beyond the PCB. The system comprises a first communication system broadcasting on a first set of broadcast bands having guard bands therebetween, and a second communications system broadcasting on a second set of broadcast bands substantially spanning the guard bands of the first communications system. The acoustic sound wave generator receives compressed air from the compressor member to produce sound and propagate the same externally. The club head has a crown section having a crown apex located an apex height above a ground plane, wherein a portion of the crown section between the crown apex and the face has an apex-to-front radius of curvature that is less than 3 inches.