I am converting a Sunn model 2 PA enclosure to a 2x10 bass cab and want to add a Peavey triflex tweeter (8-ohms, 1.5 kHz-15kHz Hz). I am looking at an Eminence high pass filter which is 8-ohms. My two tens are 8 ohms each, making the cab currently 4 ohms without the tweeter or high pass filter. When I add the 8-ohm tweeter with the 8-ohm high pass filter, will it alter the impedance of my cab? What will the total impedance be? Thanks.