Subwoofers for Magnepan 1.7 + Bonus positioning question

I'd prefer new and would like to a spend not much more than a thousand for a pair.

These SVS SB1000 Pro subs are $1140 for a pair, get down to 20Hz., and come with an app so you can fine tune the subs from your listening chair.  They also offer a 45-day, risk-free trial including return shipping and excellent customer support if you need any help.  Best of luck. 

https://www.svsound.com/products/sb-1000-pro-subwoofer

I have found SVS to be a great value. Are there better? There is always better. However I don’t think you can find better for the price. The app is awesome.  I have a pair of 3000 Micro in my dedicated listening room,and a pair of SB 2000 pros in my secondary room.  They are so easy to adjust,even I can do it. And that’s saying something! 

I utilize the SVS 1000 for the HT. Very nice solution.

For my main music system the Rythmic F12SE (dual) is amazing. 

Many years ago I stacked bookshelf speakers on subs. Only after I compared the sound of stacked versus dedicated stands did I make the decision to keep the subs and speakers separate. YMMV

Enjoy the music!

op

you did not talk about your room (it matters a lot when it comes to deploying sub(s))

general advice is get a pair of rel's (t7, t9 series), use the high level inputs (follow rel's instructions meticulously for setup)

subs on the floor, alongside each 1.7 panel