A method of manufacturing a telephony earpiece is provided. The method
includes providing a speaker diaphragm and constraining the speaker
diaphragm using a cap to provide a thin cavity between the cap and the
diaphragm. The first resonance peak of the diaphragm/cavity system is
damped by a first slow leak in the cap. The frequency response is built
up using a rear resonator in the cap and the high frequency end response
is enhanced using a front resonator on an opposite side of said diaphragm
as said cap. Positioning of these resonator holes is an important factor.
The earpiece is tuned using a second leak to adjust amplitude of low
frequency end response.