Daisy chaining PA speakers

[simon7000]

Because a loudspeaker's impedance can drop to 1/2 the rated value at some frequencies.

[Cal Weldon]

Originally Posted by AndrewT

Dedicate an amplifier channel to each speaker.
When a fault develops you only lose output from one speaker.

Originally Posted by simon7000

The result was four blown boxes and two dead amplifiers

Hmm...

Originally Posted by AndrewT

and surely they couldn't be telling us lies.

tellings lies dupe many customers into believing they are buying good value for money product.

Originally Posted by Essex DJ

I'll go with looks like the safer option of one on each channel.

Originally Posted by simon7000

Because a loudspeaker's impedance can drop to 1/2 the rated value at some frequencies.

I love diyAudio

[Essex DJ]

Its like a minefield

[dangus]

There's the quality of the drivers to consider; something with a cast frame probably has a more honest power rating. Most of your amp power goes into heating the voice coils, so the trick is to get rid of that heat. Apart from the burning out problem, heat also affects the resistance of the voice coil, causing "power compression". Vented pole pieces, bigger diameter voice coils, vented gaps all help (and cost more).

And the dynamic range of the program material. While harmonics from clipping are traditionally blamed for blowing tweeters, according to this paper from Rane it is just that the dynamic range is effectively reduced so much more real power is delivered. To use a bad analogy, you can fit a lot more cornflakes in a box if you crush them first.
http://www.rane.com/pdf/old/note128.pdf