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In the Forum: Horn-Loaded Speakers
In the Thread: For one day only

Post Subject: Yes , but….Posted by Romy the Cat on: 3/11/2013

Yes, the bottom response is about right. There is a thing about the bottom response, I might be a bit in unchartered territory as I do not know how properly calibrated your measurement devise and many other conditions that might affect the measurement but from looking at the response you posted I feel that S2 provide doo much output at higher octaves . I do not insist that I am right but in context of the condition that I accustom I would like S2 to role atom very faintly faster. It might be the HF characteristic of your room treatment that made me to feel so or the fact your speaker are toed in to direct but something is there. It is not the measurement itself that I feel is “wrong” but that transition where the driver begins to roll of at HF I feel a bit too eager for THIS driver. It would be fine for something like JBL 2440 or for any another driver but not for S2. I might be wrong and if I am then discard anything below.

Try to target the vertical axes of your horn not toward to ears but let say 1M from your shoulders. It will give effective HF roll off and will curve the imaging. The most important try the following. As your playback is set and running as you like get any very transparent acoustic materials and cover the mouth of your 600Hz horn. Do not use the crap the used on speakers grill – they are not acoustically transparent. I am taking about truly acoustically transparent material, like nylon that women has stocking made from. If you put 1-3 layers of that defuser then you will have very mild low pass filter that will very slightly just tap S2 from above. You might do it by crossing a few ¼ inch tapes over the mouth as well but it will be a little different effect. Anyhow as you get the feeling I am taking about you might find that S2 that is very very medley held atop do sound more interesting. In my playback I do it with very mild inductance after OPT. The key in here to do it negligibly small. While you are listening you my listed your subdued S2 with and with tweeter. I think if you do you might understand what I meant.

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