Well... I knew it, and I'll have to do something about it. I need a subwoofer for my new MartinLogan Scenarios. By themselves they are a step above impressive, but they do lack a lot of bass on the lower octaves. Sad to say, living in Mexico doesn't leave me a lot of options when it comes to subwoofers. Options are limited. I can't really choose. Still, there are two competitors for my buying dollar (peso, actually) within my financial reach. The first one is the Velodyne CHT-12. It's one of the higher end models of the lower end Velodyne line . Link: http://www.velodyne.com/pages/produc...t_series.html. I actually bought this one, but the guys at the store gave me the option to exchange it for the Polk Audio PSW-650. Link: http://www.polkaudio.com/home/produc...y=7&speaker=48 . Listening to them both at home is simply not an option. They are too heavy, too cumbersome, and I don't have time for a serious audition (sad, but true). I picked up the Velodyne, in fact, purely because of their reputation. The Polk is some 170 USD more expensive. I have used the Velodyne for some time now, and I find it very musical, smooth, yet a bit underpowered. The question is: what can you do when you simply can't audition both subs? Store auditioning is next to impossible: the store has no space for a serious audition (besides, they always tend to bottom out the speakers in an effort to make them sound "good"). Can I trust reviews? Is there a general consensus on the Polk subwoofer? Thanks for your help! Javier.