Yes they can sound OK and are very efficient but there are problems. Low bass is obvious. To get anything out of them you have to use reflex enclosures. You could get around this by crossing to subs at 100 Hz and put them in sealed enclosures. Then there is the high end. Their marketing supposes that most of us can not hear over 16 kHz. Then they use as an example that FM radio rolls off at 15 kHz. I am 65 years old and just tested my hearing and I make it up to 18 kHz. Then there is the beaming problem. A 15" driver is going to start beaming at around 1000 Hz getting progressively worse as the frequency rises. By 15 kHz which has a wavelength slightly under an inch, if you are not exactly in front of the driver you will not hear it. Both channels have to be pointed exactly at your ears. You might as well use headphones. So these speakers will work well for someone with a low powered amplifier who listens to back ground music. Serious listening is difficult at best. A driver has to be smaller than the smallest wavelength you want it to produce if you want the driver to disperse. If you want an efficient speaker I would go with horns. The advantage of horns is that you can control the dispersion and not bounce sound all over the place but create a condition where you have a broad listening area. Honk, Honk:)
Audio Nirvana Drivers
Recently I had a chance to listen to the Audio Nirvana 15in Alinco driver, connected to a nice 300b amp. Quite frankly, I was blown away at what I heard. It was as if the speakers completely disappeared and the sound was appearing out of thin air. The vocals these things produced were incredibly realistic, the midrange was very fast and rhythmic, and the imaging was by far some of the best I've heard. The weak part of the driver was definetly the low end, but still went down to ~35hz. Not being in the audiophile game long, and still learning, I came here to get a few opinions. This was my first experience listening to a full range driver. Having no experience with manufactures in this area, I have a question. Who makes the best full range driver? Had anyone had a chance to listen to any drivers made by Audio Nirvana? Opinions?