Fast1one
10+ year member
CarAudio.com Veteran
Depends on your application....not an expert on T/S specs but thats good right?
Qts is a function of the mechanical strength (suspension) and electrical strength (motor). The higher the number, the weaker or looser the combination of suspension/motor.
This can be good or bad depending on what you are shooting for. In a vented application, generally you want high motor/suspension stiffness so the woofer won't flop around...you also get higher power handling
The trade off is lower sensitivity and the woofer rolls off a lot quicker in a sealed/IB application. The transient response (the ability of the woofer to play notes quickly and accurately) is also negatively effected...
So what do we want for midbass? We want impact, high sensitivity, and a smooth roll off to blend well with a subwoofer. A higher QTS gives us all of this...