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In the Forum: Horn-Loaded Speakers
In the Thread: For one day only
Post Subject: Order of the filters in Macondo-like configuration.Posted by Romy the Cat on: 3/8/2013
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 amdismal wrote:
The crossovers were fourth order, which is what I use on my horns.  Second order, I have found, can give a better blending, but reduced the delicacy and transparency in my system.  But it's very complicated, and further exacerbated by the (potentially quite steep) crossovers that are already in the horn design, so a second order electronic may create a fourth order overall. 

Well, a lower order crossover does not reduce any delicacy and transparency. In fact in most of the cased it increases it. The first order for sure as it is by dentition phase-constant order. You might stay with higher order filter but at line level, where target impedance is fixed and you can write a Bessel curve with best group delay and linear phase response.

It you feel that your lower order filter make your playback to have too much harmonics then begin to eat harmonic by idling the pates of your SETs, or by loading the amp less (you will lose power doing that). The whole idea to use good compression drivers in their save operation regions is to let them to show off their harmonic capacity. Instead you truncate then with 24dB slope. Better drivers might be at 0dB produce the same sound as bad driver, the whole point is that at -40dB better driver will show something that bad driver will not even dream. The low order crossovers, besides obvious phase benefits, allow the acoustic systems of Macondo configuration to make channels to act as sort of line array devises – very pleasant and very useful move.

For sure you not always can go with first order and in horns it never a first order buy in my view one need to peruse with lower order possible as get delicacy and transparency by other natural means. The “transparency” that derives from fighter order filter is useful only for pop music.

The Cat

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