20 Most Recent JBL On Stage Micro Speaker Dock for Apple iPod - Aluminum Questions & Answers

that's called breaking up or overloading it means that the speaker is being asked to play louder than it was designed to play!! this will ruin the speaker at all volume levels if allowed to make that sound for very long..advice? lower the volume till that noise disappears it's not a product fault it's user error advice turn it down or buy a more powerful unit to achieve the volume you want/need

Check: https://www.jbl.com/on/demandware.static/-/Sites-masterCatalog_Harman/default/dw5ec84636/pdfs/JBL%20On%20Stage%20Micro.pdf

JBL On Stage II Speakers Replacement

It sounds to me like you may have the timer set on the unit... Turn off the timer using your remote control or on the unit it's self.

that screeching is called feedback..which is caused by loop oscillation in plain english that means that sound is going from the speaker to the microphone and "looping" causing feedback noise or "screetching" there is nothing you can do but lower the volume it's a normal phenom not a fault in the product but more user error. sorry to say. the only thing you can do is lower the volume till it goes away.

If there are no screws then it is snapped togeather. You must pry the seam apart and it should unsnap

My unit has the same problem, but only when used with batteries. It works just fine wher plugged with the AC/DC converter. I guess it's lack of voltage or milli Amps.

The EQ selected on your iPod doesn't seem to make any difference with this problem. Maybe it's a matter of not enough juice: Alcaline batteries work at 1.5 volts, but NiMh batts work at 1.2 Maybe that difference is enough to create that awful sound.

I have had then same exact problem, except I had an ihome. I've done research on it for a way to fix it. basically what I have come to find is that the plug for the ipod is just cheaply made, and that there is basically no easy and cheap fix for it. However as long as you have an aux-in you can just simply avoid the problem by buying an eighth inch to eighth inch cord so that you can just simply plug you ipod into the aux-in. As long as you have the ipod plugged into the the aux-in, and aux mode is selected, it should play your music while charging.