Can a power amp have too much power, risking damage to a speaker?


I have a McIntosh 402, rated 400 watts continuous per channel. If I use it to drive a pair of Klipshorns or LaScala [specified to handle 100 watts continuous] or similar high-efficiency speakers, do I risk damage to such speakers? 

joelepo

Rb61 agree. +1. My experience with my Tekton speakers and my Tsakadiris 150 w mono? I got involved so much on the music playing. I crank the volume beyond the speakers limit , I blew the tweeter.So be careful.

A general rule of thumb we see in service of loudspeakers 

too much power sent to a speaker cooks woofers (from being too loud, beyond the dynamics of the speaker)

underpowered usually cooks tweeters as the amp runs out of power and begins clipping ( clipped output = square waves = impossible for a speaker to follow a square wave precisely so it overheats trying to )

Brad

I spoke to a manufacturer who said that excess power is a big threat to speakers more so than high frequency components of distortion burning out drivers.  I’ve seen too many examples of accidents with high powered amps sending damaging pulses to speakers (someone accidentally pulling an interconnect, a power failure where flickering power results in a loud thump, etc.).  I don’t get why people play their systems so loudly that they would burn out drivers from distortion—things will sound bad long before that point is reached.

If only a tweeter is blown, that could be from an amp heavily distorting because distortion is primarily high frequencies.  But, other drivers are not getting those higher frequencies so if they blow, it is because too much power was delivered, regardless of distortion.  

I think it is safer to stay on the lower end of a manufacturer’s recommended power requirement and then don’t listen at levels where distortion is evident.