Whirlwind MD1 Portable Chimes & Triangles and from here they hit

and from here they hit an air space kept open by rods passing through the various layers

HF Transducer 1

The wide selection of 14" - 16" lets you decide how dark you want to get

the underbelly is fully coated on the inside with high density open cell foam to absorb internal reflections and reduce phase cancellation

Just play and move the knobs and sliders

Whirlwind MD1 Portable Chimes & Triangles and from here they hitMD 1 PORTABLE MIC PREAMP LINE DRIVER & HEADPHONE MONITOR Part number: MD 1 The industry's standard for parabolic, boom, and interview mic situations, the MD 1 is the ideal mic preamp for those who demand studio quality in a rugged, battery operated package. Description A broadcast quality mic preamp performs alongside a high performance input transformer to feed the MD 1 high current line driver and headphone monitor amp. An input pad and level