I just don't know how they do this but I got these speakers from back in 2007 I' am still today amazed how FULL the sound is on these little portable speakers. When I saw the specs says it goes from 20 hz to 20 kHz I thought it was a joke but when you put them close to your ears you can actualy hear all of the deep bass mids and highs like a high end system. I did open the back led of the speakers and I saw it had a huge magnet I think maybe that's how it has soo much power. The speakers are only 1 inch but they go 2watts each. Now for a 1in speaker that is alot of power for it's size. Most speakers this size is like only rated half watts not even 1 watts. You have to hear these to actualy understand what I' am talking about. I just wonder how Sentry made these. It does have alot of excursion on it since if I push it back it goes pretty far back. I didn't push it that hard of cource but enough to see how much it can freely move and it moves very freely.


I' am talking about the Sentry SP100. Not alot of people know these amazing speakers but they have the sound of a full sized stereo system. Just have to put them close to your ears to hear the deep bass. If you set them down you won't hear as much bass but when they are close to your ears if when you get amazed. You still hear some bass when they are on the desk but just doesn't give you the full effect like a big stereo system. These are like soo portable you can put them in your pocket. They have a built in rechargable battery and you charge them by using your USB port. You can use an power adapter that has 5 volts too of cource.


But eather way has anyone else ever seen these and heard them? I don't know if there are people who have portable speakers here.


As I said if you heard these you will truly be amazed for there size. I don't know how Sentry does it. I had these speakers for long time but I really like it that is't portable and I get that full sound anywhere I go. The big difference from these and actualy bigger stereos are that the bigger stereos you can hear from distance the deep bass. But these you have to have them about 3-5 inches away from your ear to hear that low bass. They won't go very loud though since it's small but if you have them set the right volume and hold them up close to your ears you hear everything.


Does basicly having a big magnet and having that excursion makes them have alot of bass?

Of cource I wish you could hear the full bass when it's 1 to 2 feet away or more but they are small after all.