The MC6-HT is the angled version of the MC6. By designing the speaker with a fixed tweeter and woofer angle, MartinLogan was able to tune the performance of the speaker far more accurately than universal pivoting designs. By eliminating the variable of tweeter and woofer angle, the precision Vojtko crossover network has been tuned 
for more accurate and predictable results. The MC6-HT is recommended for applications where the listener will spend most of their time not directly underneath the speaker.