If this is a one time deal, then I would suggest you get an Isolator instead (although not the same its similar but much easier to integrate).
Adding the PDS3000 (or any DJ oriented crossover) to a soundsystem is something that has to be considered when designing the soundsystem from the beginning.
In the simplest design, the low output feeds the subs, the highs feed additional system tweeters (usually JBL bullet style units), and the full range outputs to a full range stack. The crossover's low and high outputs (in effect) act as a sweetener to the full range signal.
I can't say how it would work in your application as I would have to know more about the system and what you want to achieve. In regards to cabling, you would have to convert the signal from unbalanced to balanced to avoid noise issues.
Last edited by in2house : 10-05-2014 at 10:49 PM.