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In the Forum: Horn-Loaded Speakers
In the Thread: Big mama 1.5" horns....
Post Subject: Re: Useable range of the big horns & mid-bass solutionsPosted by i_should_coco on: 9/9/2006
Hello Romy,
Thanks for the great explanation, I'm a newcomer to horns, so please treat me gently ;-)
Very interesting info, so in essence there are two limits, the real "hard" limit, where you risk damage to the driver, and the "sensible" limit, below which is cease to sound good. I'm intrigued by your comment that the buzzing below 350Hz is not "disgustng" sounding, I would have though any buzzing is a bad thing? I take it that this test is without a horn to load the driver? Currently, I cross (2nd order) at about 550Hz using the CN157.
I confess that I actually have two pairs of S2s (which have different diaphragms, one pair has the metal surrounds and the other pair, plastic) and I was hatching a scheme where I could use both of them, so I was thinking one pair from 350Hz to say 3Khz, the second pair from 3kHz to 12kHz (which I belive is pretty much the upper limit for the S2) and probably a tweeter above that. With the CN157, the S2 definitely needs a tweeter. From what you say above, 450Hz would be more realistic for the low end I guess? I see in your "fundamental channel" experiments, you appear to be doing something similar, which give me hope.
I do have a real headache trying to figure out what kind of bass solution to use. I have built some prototype mid-bass horns with AK151 drivers, but they're enormous, so I can't keep them long-term, because they just don't fit in my lounge. I was mooting the idea of some sort of folded horn, but they would have problems getting high enough I suspect, which is why I was hoping to get more from the S2. Any suggestions on how to integrate a sensible bass/mid-bass solution? - I have a pair of sub-woofers which I can employ below 100-150Hz if I drive them actively.
Cheers,
Pete
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