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It seems to me that Devialet had a choice of how to present this capability in the configurator: they could have provided a "crossover" black box with a couple of parameters (cross-over frequency, filter order, ...) which would have been easier to use. Instead they chose to expose the underlying filters, which gives more flexibility for those who want or need it - the disadvantage being that it requires a bit more knowledge from the user. IIRC the default filter configuration is second order in which case it naturally "does the right thing", doesn't it?
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Yes, second order does work correctly. On the others you need to use the calculation I posted earlier.
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(26-Oct-2017, 07:06)watchnerd Wrote: (26-Oct-2017, 01:30)maxijazz Wrote: Im general, in electronics, cut off frequency is the one where there is 3dB fall (or raise) in signal power.
It would mean that 1-st order filter is properly implemented (-3dB fall at 250Hz). The other filters no so well. I have to admit that different types of filters could have different definitions of cut-off
Not -3 dB.
Crossovers are -6 dB/per per order / per octave. So 1st order is -6 dB per octave....4th order is -24 dB per octave.
Here's what I don't get:
Why would Devialet implement this in such a non-intuitative way?
I am right and you are right. It is misunderstanding.
I am talking about definition of cut-off frequency. It is at - 3dB.
You are talking about filters' slopes (roll-off/damping rates).
Cheers.
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(26-Oct-2017, 07:42)Waiski Wrote: I don't get it. They don't even inform us how to use the crossover...
I never found out how filters of Tone Controls work.
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