In short, if you play with your head forward of your spine, pivot your head, or alter slide positions as you change registers, the larger throat mouthpieces will not work as well as for you as the smaller sizes. If you do not make these adjustments, they larger throat models are a distinct advantage for many players. Remember to keep your head over your spine, and do not pivot or tighten up as you change registers. Because of the increased projection of sound when using our mouthpieces, your new mouthpiece may, at first, sound better at a distance than it will up close. This can be disorienting, especially if you are playing in a small room.
Most players can hear and feel an improvement immediately.
Letting go of old habits is so crucial to enjoying our mouthpieces that over half of our new 20 page mouthpiece guide is devoted to this subject. If you don't think you compensate for your current equipment, simply look in the mirror as you play a two octave arpeggio. I find the low register is flat when using a Monette trombone mouthpiece. When using our mouthpieces, a more consistent body use when playing from the middle to the lower register will not only help you play more in-tune, but will also help you to sound better and not tire as quickly during performance as when you use a conventional mouthpiece and compensate. Our acoustic innovation called constant pitch center requires that each mouthpiece be individually play-tested and adjusted on the correct key of instrument both before plating and then again before delivery.