Do digital signals (CDJs/Serato) output a special signal that can damage speakers?

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-- Do digital signals (CDJs/Serato) output a special signal that can damage speakers?
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Posted by djdk on May-22-2011 10:16:

quote:
Originally posted by Stu Cox
On the original topic...

While I'm convinced this guy is talking out of his arse, theoretically you COULD end up with some unwanted high frequencies in the output signal.

This is how:

Although the digital signal only stores frequencies of up to 22kHz (or 48kHz in a system with a sample rate of 96kHz - the maximum frequency is always half the sample rate), the data is just passed around as 'numbers' until it's actually needed as an analogue signal. This happens at the output of the last digital component - in this case the DJM2000.

If the last digital-to-analogue converter (which will be on the output of the DJM2000) is a big crock of shite, it could suffer from clock noise... the clock in these things can be several hundred MHz, so that frequency can get dropped onto your signal line.

But even the cheapest systems should have a low-pass filter on the output of the digital circuitry to get rid of anything out of the range of human hearing - that includes Pioneer mixers, even if their sound quality is fairly rubbish at the best of times.

Stuart you are such a geek

Posted by Stu Cox on May-22-2011 11:17:

quote:
Originally posted by djdk
Stuart you are such a geek

In all fairness it's a geeky topic. And I know you understood every word.

Posted by Brandt Slater on May-22-2011 16:05:

The limiters in amps do very little limiting. Mostly protect the amp but that's it. You still need something before the amp.

I still think the day of a master word clock for dj gear is getting closer.

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