Advice for Sub to match with Martin Logan Monolith III


Looking to add a sub to my Monolith III's,  like to keep it around $1,500 new or used.

Thanks,

Steve
stevepa
Wow!  That's  quite the system. I'm running a McIntosh C-22 highly modified preamp with a highly modified MC 275 Tube amp on mid and highs and a Legacy 2  transistor amp on the lows. Using a Shiit DA with my iPhone.  I was skeptical about using an iPhone as my source but the DA converter is amazing.  Also use a pioneer elite modified it cd player.  

Steve, nice.

I just got the CXC transport recently because my old faithful highly modified Pioneer Elite PD-65 bit the dust and gave up the ghost for the final time last year. And my $40 DVD player just wasn’t, um, "optimal". Debated going all file based, but I like having a disc spinner. For now. :)

Hey I just got a note from SVS - the 2 PB13-Ultras I bought yesterday... have SHIPPED TODAY via FedEx .. Gonna have subs in da howsss. Cue Jurassic Park tyrannosaurus walking through the living room. And da ghetto rattling car trunk noise hittin it hard yo... :D

Old school is hard give up!  I've haven't made the jump to digital movie.  Having a degree in audio  engineering, I still go for  straight music. If I had the budget I would love to listen and watch movies in killer sound.  Knowing myself I would spend way to much money, so I kept it to music only.  An addiction I have to control! :), as you know. 
Yeah, me too. Like I said, I'm 95% two channel music. Maybe having a pair of nice subs will allow me to consider horns or panel speakers next as well.