How easy is it to blow JBL speakers?
My speaker up front is working but sounds blown, however neither of my rear speakers in the boat (left or right) side seem to be working. Sometimes the right side speaker comes on, but sounds blown, however the left isn't working at all. Could it possibly be the radio? Even if the left side was blown wouldn't it still work?
Any help would be greatly appreciated.
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Either that speaker is not connected or, the speaker is blown. To test: Disconnect that speaker from the stereo and, using a 9volt battery, tap the speaker's + and - to the battery's + and -. You should hear a "pop". That would indicate that the speaker works. DO NOT connect the 9 volt battery to the stereo side of the speaker wire!!!!
Are you sure you wired up the head unit correctly? It is fairly uncommon for a audio output amplifier to blow out leaving 3 working speakers and 1 not working. So more than likely it is bad wiring or a blown speaker. Best bet would be get a digital multimeter and ohm out the speaker and see if it has continuity and is the same as the adjacent speaker. You could also try swapping the left/right channel wiring and see if the front right speaker stops working when connected to the left speaker output or vice versa.
The volume setting on your phone affects the volume as well. Turn the phone up more. If this has already been tried or does not work the keep reading. I believe the call sound comes only through a front speaker (maybe the right front...not sure but I can check on this). If the music seems like it sounds good (with all the speakers) there might be a slim chance that the one speaker that plays the call is not working well. Use the fader and balance setting to switch to each speaker one by one and play sound through it (preferably a commercial with people speaking). See if one of the front speakers is blown or at least does not sound good for voice. This would mean replacing a speaker front set.
then the ones not working r probably ran together pull out radio and check speaker wire connections,if that doesnt work run the back speaker off the other back speaker , then do same w front , or if that doesnt work maybe speakers r blown out ,
Would check your balance settings. Make sure your not balanced more to left than right. Next i would try to swap over one of the speakers from right side to left to see if it crackles. If not replace left side speakers.
Yellow - +12V Constant Power
Red - +12V Switched (accessory) Power
Blue - Power Antenna
Blue/White - Amp Turn-on
White - Left Front Positive Speaker Wire (LF+)
White/Black - (LF-)
Gray - Right Front Positive Speaker Wire (RF+)
Gray/Black - (RF-)
Green - Right Rear Positive Speaker Wire (RR+)
Green/Black - (RR-)
Purple - Left Rear Positive Speaker Wire (LR+)
Purple/Black - (LR-)