Low power amps and speaker damage?

''Low power amps and speaker damage?''
This is what JBL says, about low powered amps and loudspeaker damage. See link below.

https://adn.harmanpro.com/site_elements/executables/19191_1571426813/JBL_TechNote_DangerLowPower_ori...

Here is the basis for the widely-stated comment that low power amps can blow speakers.  

Music is mostly complex sine waves. When an amp is overdriven, it starts clipping. Clipping flattens the tops of the signal, increasingly turning them into square waves.  If you look at a full square wave, it goes from all the way "on" at the negative end of the cycle to all the way "on" during the positive phase with no "off" period.  Also, square waves contain a lot more high frequency info.  A 1 KHZ pure sine wave wave contains only 1 KHz info. A 1 KHz square wave contains a ton of higher frequency harmonics. 

So, it is very easy for a clipping amplifier to send lots of power to a tweeter even though the music being played doesn't have a lot of high frequency content. This, combined with the increased "on" periods makes it easy to overheat tweeters in particular, but the other drivers can also be affected.

As others have said, though, clipped music sounds nasty and is clearly obvious to almost any listener. If this happens with your system on a regular basis, you either chose the wrong speakers or the wrong amp.

Do neither, don't over-power them or under-power your speakers especially if you are going demand higher listening levels. Match the amp to the speakers and they are going to sound their best. You don' want to put a 200 watt per channel amp on speakers that are rated only 100 watts or less.

It is the "clipping" of an amplifier which may destroy a speaker.  It happens when you overdrive your amplifier (in simplistic terms, this typically means listening to it at very hi volumes).

Regardless of the power of your amplifier, or the power handling capability of your speaker, if you drive your amplifier to clipping levels, then you will definitely have the danger of destroying your speakers.  

In your case, since you have not destroyed your speakers, one of these below applies:

- You have not listened to your amplifier at a volume which has yet caused it to clip.
- You may have clip detection circuit in your amplifier.
- You have been lucky and the crossover network in your speaker has managed to protect them.
- You just have been very lucky.