JBL Charge 3: Seeking 50mm, 10W Replacement Transducer for Damaged Speaker Coil

Hi, I received a friend JBL charge 3 from a friend for repair. The problem is that one of the speakers cracks during stronger tones. I have diagnosed that the coil is probably damaged, my question is that I would like to replace this loudspeaker with a new one although during the search I can not find an identical 50 mm and 10 watt dimensions, at least that's what I read on the manufacturer's website. I can not get any information from the loudspeaker. If someone had a similar problem or found such a speaker, I would be extremely grateful for sending a link, best regards Tomek.

Buddy is rather a loudspeaker produced only under the JBL Charge 3 without selling the speaker only as a set but I can be wrong. Look for something similar in dimensions and choose something different.
By the way, see if you can not save your loudspeaker, for example, if the plate with magnet pin did not peel off because if it moved, it automatically presses the coil causing cracking (in the car I had such a fault in the door loudspeaker and centered the spindle and a few drops of seconds glue case).

tadzikx561 wrote:

I have diagnosed that the coil is probably damaged,

How?

I just read about it, I put all the symptoms on the coil but I'm not sure because I'm not sitting in it. I put photos of the loudspeaker.

If the coil had a short circuit the resistance would be different from 4 or 8 ohms - depending on the resistance your speaker may have. If it was scattered (it detached itself from the carcass), you could hear something like a humming spring in the background of music while playing. You can gently try to press the membrane with your fingers - if you do not feel and hear the characteristic signs of wiping on metal - check by striking lightly (knocking) the diaphragm with your finger - the coil spilled apart from the sound of the impact (something like knocking on a cardboard box) you can hear a faint sound reminiscent of rusted vibration spring.
At the beginning, therefore, it would be necessary to diagnose the loudspeaker itself, because it is possible that the fault concerns the amplifier.

mateov3000 wrote:

see if you can save your loudspeaker, ie whether the plate with the magnet shaft has not come off

If this happened, the coil would be rigidly wedged and loudspeaker or would not play at all, or quietly and only at the highest frequencies.

My friend was just slightly coil wiping through which was a characteristic humming at a higher volume. But it was felt to move the membrane that the coil gently something to do something like with a sandy coil and it was not completely blocked

She rubbed it because he removed the magnet from the basket? I doubt very much. Try to set two magnets between a piece of paper in order to only hold it slightly - physically unreal - a magnet (especially in the loudspeaker) that creates a strong magnetic field that, if for some reason it splits the magnetic circuit - wedges the coil so that you really have to a lot of strength to separate it from the pole piece.
This "hack" (whatever it was supposed to be, I have not found this word in any dictionary), may result from a partially stuck coil, from a swollen coil (from overheating after high power), or from a factory defect. If only wiped at higher volumes, it is also possible to centrally mount the diaphragm suspension with the coil, as well as partially fractured leads from the face connecting the coil (diaphragm) to the speaker terminals.