- 1). Turn down the volume control on the amplifier if you hear popping.
- 2). Reduce bass and treble and try to listen again, starting with a low volume. Popping can damage the speaker, so don’t allow it to happen. Reduce the volume, base and treble. Turn the volume up slowly.
- 3). Verify the speakers are within the parameters of the amplifier if you keep blowing them. Set the bass and treble in the middle position. Place the volume control at the half-way position and listen to some music. If the music’s volume is lower than the volume you usually listen to, either listen at lower volumes, or upgrade your amplifier to a more powerful one. Continued playing at higher volumes with the existing amplifier may blow the speakers.
- 4). Set the balance control in the middle and use elimination to determine where one speaker not working is in the chain. Try different sources to see if the problem occurs on all sources. If it doesn’t, the problem is with the source, not the amplifier or speaker.
- 5). Try speakers in different speaker jacks on the amplifier to try to identify if the problem is with the amplifier. If multiple speakers do not work on one jack, the problem is with the amplifier, not the JBL speaker. Try the same procedure with the wires, to see if the wiring may be bad. Perform the same kind of tests if one speaker is thin-sounding or muffled.
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