I've noticed that many (most?) use the Eminence pre-built crossovers and add compensation components to these. Is the pxb2-1.6 the correct one for the 3pi and which components on the diagram are/are not included? (I assume R1, R2, C1, R3 and C5 need to be purchased separately).

On the other hand, is it better to build the entire crossover from scratch?

Also, what horn flare is used for the 3pi?

Thanks for any advice you can provide. If anyone out there have a buying list for 3pi that would help a lot (I use Parts Express quite frequently).