NHT iWS Owner's Manual page 11

Use if:
You wish to run your front L & R speakers full-range (no high-pass filter)
You have a receiver / integrated amplifier with "Subwoofer Out" jacks
AV Receiver
iWS Connection Method #2
Connect the iWS from the "Subwoofer Out"
and run the front L & R speakers full-range
(or surround processor and separate amplifier)
+ +
_ _
10
Subwoofer
Set
To
Mono
iWS Cabinet
LFE /
X1
A1