If you use the speaker jumpers you are using the output and sonic signature of your amp. This can be good as both the subs and FRD are using the same source. It does drop the impedance by an ohm or so which shouldn't be a problem in most cases with Zu speakers.
Using the pre amp for the subs removes this which can also be good if your power amp is already struggling....... Again not an issue with Zu speakers in most cases.
Try them both and see. My subs are connected using the speaker inputs.
Using the pre amp for the subs removes this which can also be good if your power amp is already struggling....... Again not an issue with Zu speakers in most cases.
Try them both and see. My subs are connected using the speaker inputs.