p style="margin: 0px; text-align: justify;">The correct way to use a Littman stethoscope is to use light pressure when auscultating with the bell, to hear low-frequency sounds. In order to hear high-frequency sound, the diaphragm should be used, applying firm pressure. As with a traditional bell, when using a stethoscope equipped with a tunable diaphragm, one should use light pressure to hear low-frequency sounds. Increasing the pressure on the chestpiece will cause the suspended diaphragm to move inward, resting on the internal ring of the chestpiece. When this happens, the low-frequency sound waves are attenuated, or reduced, allowing only the high-frequency sounds to be heard.</p