Subwoofer suggestions for budget system?


My current setup is a pair of Magnepan 1.6 speakers, a pair of Schiit Vidars, Schiit Sol turntable w/Goldring E3 cartridge (I have a VAS-rebuilt Denon DL-103 with Ebony shell and microridge stylus when I can get someone to come set it up for me), Mani 2 phono stage, Asgard 3 headphone amp acting as preamp, Schiit SYS as source selector, Modi 3+ connected to Volumio for streaming digital and an Orchard Audio RCA-to-XLR converter to drive the Vidars in monoblock mode.

I'd like to add a subwoofer to the mix that can keep bass out of the Maggies.  I'd, of course, prefer a dipole sub to go with the dipole speakers, but not terribly picky ATM.  My budget is around $200 to $300 for now.  I have been very tempted to build a pair of my own subs, but that's not in my budget right now.

Suggestions?

technotoad

@soix 

thanks! I started the crawl and I found it to be best between the standmount speakers, by the back wall. I don't think anything is wrong with the sub. I tried a longer cable to move it to the sidewall and it was very muted. My better RCA cables are 6 feet and I am wary of using barrel connectors. On the "plus" side, my CFO told me not to get attached to it, I only got approval for trying it out and returning it :)
I am browsing used ads, I think a smaller, older unit could get the job done.

@m-db - I set it up according to the quick manual and no I did not map my room nodes - yet, more to learn for me.

@grislybutter Great!  Did you get the crossover, volume and phase set properly?  How does it sound now?

@soix I did what the manual said. It sounds better. Still reading up on it and tweaking. Maybe there is no chemistry between Dynaudio and SVS :)