| Discontinuity in horn : is it important ? [message #17669] |
Wed, 23 March 2005 12:34  |
Eric Mainardi
Messages: 22
Registered: May 2009
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Chancellor |
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What seems to me worthy (IMHO) in round (tractrix) horns is that you are able to perfectly match the horn to the driver throat in producing the same angle : all compression drivers have a conical output with some angle and you can start your horn with this angle. So there is strictly NO discontinuity.
Some spectral measurements we were able to achieve show that any discontinuity in a horn expension generates standing waves and turbulences..., I mean distortion.
Meanwhile, some high end wood horns (TAD, FOSTEX, MARTINELLI,...) show a clear discontinuity at the output of the adapter (the metal piece where the driver is bolted to).
So, my friends, do you attach some importance to this point or is it a "wrong" problem ?
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| Re: Yes [message #17672 is a reply to message #17669] |
Thu, 24 March 2005 20:42  |
Bill Martinelli
Messages: 677
Registered: May 2009
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Illuminati (1st Degree) |
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I thought I had addressed this problem by making the conical throat piece. By using this throat, there is an exact match to to the driver which allows for some horn expansion before being blended into the rectangular part of the horn. Where as, like you say many square horns have immediate transitions from round to square. We worked to overcome that problem. Bill
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