Excerpt: I'm pretty darn happy with these - certainly an improvement over the tiny speakers in the 26" TV these are now attached to. Only complaints - The power on light is a bright distraction and was difficult to block (as it encircles the volume knob), and I wish that there was more adjustment range of the Bass and Treble controls (though I am thrilled to have them at all - most units do not, and was one of the reasons I chose these).
Pretty good computer speakers, only caveat is that they turn off to save power
AW "AW", Amazon
23 March 2014
Summary: Pretty good computer speakers, the only caveat is that they turn off to save power and it takes about 5 seconds for them to turn back on (which they do automatically) when they realize audio is coming in. There is NO WAY to turn off this feature, so I hope you like it! This isn't so bad for music (you'll miss the first 5 seconds, if you haven't played any sounds in 15-20 minutes, no big deal), but it can be annoying if you expect your computer to make a noise to inform...
Low end is more full sounding/reinforced compared to the T20s.
J. Childress, Amazon
22 January 2014
Summary: I own the T20 version of this speaker line and decided that since the price has dropped below $100 to give the T40s a try. As expected there is no difference in how low bass range extended as you can only get so much from 2.5" speakers. Using a tone generator, 60hz is about where the sound starts to drop off and 45-50hz is the bottom end of useable sound before the sound of air movement/distortion become louder than the sound itself.
Summary: By Tom Lewis If half-stars were available, I would have rated this product 4 and a half stars. The box says "Premium, home theatre sound with booming bass". If you qualify that, it is exactly correct. And here's what I mean by "qualify": The word "premium" applies if you are comparing this system to conventional computer speaker systems (it is the best I've come across in that regard).