I think for serious listening they require a sub. For just general listening I think there's plenty of bass. The Yamaha I had them connected is no lightweight and very capable of 4 ohm loads. I just don't think it's the best for music. Does great for Home Theater though. They are heavy at 17lbs each, but should be wall mountable, but are better suited for speaker stands. I've have them on a pair of Paradigm Premier stands and they sound great. Best money I've spent on audio in a long time.agreed... I picked up a pair for my office and they are excellent sounding. A word of warning - they are not small speakers. They are fairly good sized and heavy! I mounted them on my wall but I bought a special mount (a shelf-like mount so I wouldn't have to screw into them).
They need to be paired with a sub - I believe they roll off at 80 and they match up nicely with the sub I'm using.
Also, they like power! I had them connected to a cheap Sony for a day and like you - I didn't like them. I knew they'd sound better so I connected them to an Emotiva BPA-1 amp and they instantly transformed into a nice speaker. Remember - they are 4 ohm speakers.
They are a fantastic steal... great speakers - especially for the price.