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Fact is, amp makers and speaker makers are at odds with each other.
There are no recognised rules for either to follow so that the two
products are compatible.


There are at least two different ways a reactive load can damage an amp.

1) The feedback loop can go unstable usually causing a high level ultrasonic oscillation that may damage the speaker or amp or both. This can happen even with no program material. If the feedback loop is designed with adequate margin, this should not happen.

2) The reactive load causes the voltage and current to be out of phase and this can cause the transistors to exceed their voltage or current or power safe operating area ratings. This usually takes loud program material.
If the device ratings have adequate margin, this should not happen.

Sometimes the oscillation in #1 can provide the "loud program material".

A well designed amp with proper current limiting protection can survive driving a short.

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