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In the Forum: Audio Discussions
In the Thread: The ULF cannel for my new listening room.
Post Subject: The thoughts...Posted by Romy the Cat on: 9/11/2018
I has been thinking the whole evening about the subject of the ULF hardness I was experiencing today and here is my leading hypothesis. I always was pitching that a sharp order filter is a barbaric thing to do, particularly at LF. Still, here I am, using the 4th order at my ULF. The 4th order at ULF was a good thing to do in my former room where I have slow opening true 40Hz horn load with over dumped driver. I needed to modulate speed and weight at the bottom of the soft sounding horn. In my current room I have no “soft sounding horn” but I have a direct radiators that are neutral in terms of “loading”. So, I need a completely different crossover at my ULF and I might even revise the architecture and let the IB to move slightly into auditable range.  I am thinking about second order now, probably at 20-25Hz… It will be very interesting to experiment…

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