Re: power handling
Quote:
Originally posted by lsutherlin
What is the proper way to calculate a speaker system’s (three way or two way speaker system) power handling when the drivers used have different maximum power values?
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Destructive testing. Power handling specs are mostly smoke and mirrors anyway. Are you building PA speakers, or speakers for the home? A rule of thumb for pop music might be equal power per octave from 40-8kHz Tweeters are generally "system" rated at a particular crossover point. Many tweeters can be blown with a 3 to 6 Volt sine wave across the terminals.
Quote:
Originally posted by lsutherlin
Also, is it appropriate to place a resistor in the speaker systems circuit path to raise the impedance to an “ideal” level for the power amp’s output stage?
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Not generally, no.
Quote:
Originally posted by lsutherlin
Is there another design approach? What will result in the least amount of distortion? What is ideal? I’ve noticed that most DIY home audio drivers are rated at 8ohm. When connecting a pair (whether parallel or in series) to make the system into a two way speaker system you get a value that wouldn’t suite the amp I have.
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Ideal is having speakers with the right impedance. Most amps don't care if the impedance is high, though, so series may be your best option. Ohm ratings on amplifiers are mostly only important if you listen at high levels or have REALLY cheap amplification.
You could use an autoformer, but for solid state amps you need a blocking cap because an autoformer is a DC short and SS amps tend not to like that.... 
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19th October 2007, 08:34 PM
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