Tweeter addition to Four10, Six10 or Eight10

This can only be added to a new Two10, Four10, Six10 or Eight10 order. This isn't a retrofit. Tweeter and crossover extends the frequency response to ~20kHz with increased clarity and lower THD. When the HF control is all the way off (fully clockwise) the sound is identical to the standard version. With this added your Four10 is now a Four10T, your Six10 a Six10T or your Eight10 an Eight10T.