Power input

When I am selecting parameters and I am doing multiple woofers, do I do the input power for in total, or what each sub will see? Like, let’s say I’m doing a single 15 and I input 3000W, if I were to do three 10s  would I make the input power 3000 or 1000?

The Input Power field means the total power supplied to all drivers, not the power supplied to each driver. So, if you have two subwoofers and Input Power is set to 1000 W, the power is divided equally between them — 500 W per driver.