A precisely manufactured German diaphragm is mated to a large shielded motor structure. The result is a tweeter with excellent timbre and low distortion characteristics. Transient response is improved via the use of ferrofluid and a copper-clad aluminum voice coil. Some of our customers have used this tweeter as a drop in replacement for the popular classic AR3a speaker from the 70"s. Note that they have recommended adding a .07mh 18 gauge inductor in parallel with the tweeter to more mimic the original AR3a sound.