i've had the Silver 5000, that had Quite good speaker locks, but i think it was the handle lock type, so if the handle was up there was no way them speakers were coming off, but when the handle went down by accident (which it did, a lot) the speakers would just fall off, but the 8000 and 8800, the speaker locks are a bit garbage, they have a slider on top to lock them, but all you have to do is knock them and they totally skip the locks and just fall off, i like the Quality of the boxes though, they are Quite nice radios, the original speakers are a bit bassless and distort a lot, but with replacement woofers they sound nice, Only issue for me though is they are Massive heavy things. Not recommended to carry them any where, they're similar to the Philips D8644, big, heavy and docile. so always best to find a good spot in the house and leave them there.