With the amp you have you will need to use the high level inputs on that particular sub. You will have to calibrate the speakers to 75 db using the volume knob, remember where this setting is as you will need to know the position of the volume while setting up the sub. With the speakers disconnected and the volume knob at the same position as where you had it with the speakers. From there you will need to start turning up the gain knob on the sub til you reach 75 db on the sub. Hook the speakers back up. You now have calibrated the system.
BTW, you're going to need some test tones to do this.
