JL shipped me a turd in a box labelled W3 for $159

BigNate

The bolded statement is incorrect. The are two things that can damage a speaker, pushing it beyond its mechanical limits or pushing it beyond its thermal limits. The mechanical limits of a speaker are the distance which the speaker can travel safely (Xmech). Exceeding this can lead to the voice coil leaving the gap or tearing of the spider or tinsel leads. Exceeding the thermal limits of a speaker can only be accomplished with an excess in power sent through the voice coil. This can and often is caused by clipping. "Driving an amplifier into clipping may cause it to output power in excess of its published ratings." That is a quote taken directly from the very beginning of the link you posted. While yes clipping is often caused by someone with too little power setting their gains incorrectly, too little power in and of itself can not damage a speaker.

To the op no matter what you can and volume level are at currently it is still possible that you were getting the full power of that amplifier. You can assume all you want that because the gain was low and volume was low that you are not but unless you set you gains with an o-scope you do not know the input voltage that amplifier is seeing to it is a real possiblity.

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