JBL does not recommend fusing loudspeakers. A fuse may blow with a signal that would not damage the speaker, but it can also pass a signal that can damage the speaker. To protect your system, JBL advises using adequate, clean amplifier power and watch for amplifier clipping. Add a limiter to your system to electronically limit any potentially damaging transients. Some JBL Professional speaker systems include SonicGuard™, a system that actively protects drivers from excess power.