46de46c6@news.povray.org...
>>> Hard to see how you could deliberately make the system less efficient 
>>> without just plonking a huge 50W resistor in series (which would totally 
>>> screw up the quality of the sound).
>>
>> And why would that be?
>
> Because if you put a resistance in there large enough to causes a 
> significant change in efficiency it would create a low pass filter with 
> the capacitance of the cable.  Also the resistor would heat up, so if you 
> listened to loud music, after a while it would start to get quieter, and 
> your speakers would start to get warmer...  Doesn't seem like a good idea 
> if you are striving for optimum sound quality...
>
Some power enclosures come with a built-in kind of protection : a light-bulb 
in serie with the speakers. When input power increases, the bulb wire gets 
hot  then its resistance increases and the voltage at the ends of the coil 
is limited.

Marc

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