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RE: Best Subwoofer Connection

Posted by Kal Rubinson on January 2, 2017 at 18:33:38:
By external crossover, do you mean the one in the e110?

You do not want to run the mains full-range. Connect the preamp output to the sub's line in and the sub's line out to the power amps.
"Analog inputs are provided for unbalanced line-level signals or speaker level signals. Dedicated line outputs are included to make a bi-amped system arrangement with no additional hardware required. Useful in combating ground-related noise problems, a rear panel switch configures the line level inputs as grounded or isolated.
The E-Sub's active crossover is a true two-way, 4th order Linkwitz-Riley design, with a low-pass filter feeding the subwoofer's amplifier and a high-pass filtered signal exiting its line outputs."