| Re: Push-Pull horns [message #20315 is a reply to message #20314] |
Fri, 27 August 2004 10:42   |
GM
Messages: 114
Registered: May 2009
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Viscount |
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>Extended HF down the back horn is OK.
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If the 'XO' point is kept low enough, I agree, but I've experimented enough with BLs that above ~250Hz (some say as low as 100Hz) I find the comb filtering unacceptable, so as always YMMV.
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>The back horn throat chamber (LP acoustic filter)is best eliminated - this removes the nasty looking peaks (phase inversions?) shown by HornResponse - which even if well down, must surely be heard full level from the front.
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Hmm, if you design the horn properly, the filter doesn't cause this due to the first section of the horn damping it. I assume that either by design/experimentation/blind luck yours works due to having the ~correct first section that is in effect the LP filter.GM
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