LR 24 is a crossover slope...BW 18 is also. We suggest BW 18 @ 45 hz beacuse of the amount of power you have and is designed to protect you subs...The LR 24 is a very musical crossover type . The number is how steep the slope is look a a slope of 6 as the bunny hill @ the local ski resort, and the 48 as the expert hill in steepness...The thing about the steeper slopes is they:
1. In the case of the BW18 protect the sub speaker from damage from too low a frequency
2. In the case of the LR 24 the interaction in the crossover region is minimized
I would suggest this:
HPF (sub) (hipass filter.. the LOWEST frequency you want the speaker to produce) BW18@ 45
again we have chosen 45hz due to the power available
LPF (sub) (lopass filter... the highest point we want the speaker to go) LR24 @120hz
we chose that frequency because of the size of the low frequency speaker in the tops
HPF (MS28) LR24 @120hz
the 120 hz will also help with intelligibility of the MS28's and not get the subs too high in frequency so that they sound honky.
When you select the [xover] by pressing the button with that name on it you will be able to select the type and slope by using the [<prev] [next>] page buttons and the encoder (large wheel)
The HML refers to the Hi, Mid, and LO outputs and the one you are working with is highlighted when selected...
you need to sit down with the unit and find out what EVERY KNOB and dial does. Simply select an unused preset by pressing the [program] button and rotating the data wheel...press the big knob in to load the program. Then play with all the features till you can navigate about the DRPA with confidence. Use the block diagram so you can see what the flow of the device is...If you don't have the manula you can download it here:http://www.dbxpro.com/Literature.php
You can also download the GUI for the 260 and get an even better idea of how the tools in the driverack work... that is is in the downloads/software firmware
Once you select the xover types and slopes and set up the speakers you will want to save this preset to a location you can find it and name it... that is all in the FAQ section as well...