Looking for a sub to put in my amps loop function

Maybe I’m missing something, but is the loop on your Peachtree before or after the volume control? 

If before, then whatever component is connected in the loop won’t have its volume controlled by the Peachtree’s main volume control. If this is the case, then you’d have to independently re-adjust the volume of your subwoofer every time you adjusted the main volume control knob, and that’s just not practical. 

But maybe I’m missing something... ?  

Duke

Imhififan,

If I understand correctly, the Vandersteen hookup puts a 6dB highpass filter into the loop, and then the sub is AFTER the loop, and receives a speaker-level signal. The sub’s internal lowpass filter is the inverse of that 6 dB highpass filter. Is the right?

If so, that makes sense to me.

Perhaps I misunderstood hammy1750 when he said he "would like to add a subwoofer into the amps loop function to take the load of the 80Hz and below off of the amp and DQ-10s and onto the sub." I interpreted that to mean the sub’s line-level input and line-level highpassed output would be connected to the loop’s output and input respectively, which would have placed them in the signal path before the volume control.

Edit: Looks like we were typing at the same time.

Duke

" Is there a way to set a subwoofer up to stop the nova from amplifying 80Hz and below and still be controlled by the novas volume control."
Yes, by using the Vandersteen subs with the setup procedure imhififan linked to.  The filter slopes are shallow at 6 dB per octave, so imo you might want to position the sub along the same wall as the main speakers and in between them. 

Unless the Nova has pre-amp outputs and power-amp inputs, the Vandersteen approach is probably your best bet.  It's really quite clever, kudos to Richard Vandersteen for coming up with it. 

Duke