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https://www.diyaudio.com/community/threads/hm-double-bass-horn-mini-trombone.319751/
This is a mini-trombone build in Canada. 😉
This is a mini-trombone build in Canada. 😉
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Joined 2009
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Thanks for reminding me of this designer. I've seen his posts on this forum several times, most often they are ignored - language/culture? I'd like to see more threads on horns.
My 'campaign' for a dedicated horns sub-forum hasn't progressed but I've seen a lot of good horns forums over the years which haven't all survived and I think DIY Audio could inherit the earth on this front if it had a suitable sub-forum. Of course, some horns are more like TL's so there'd have to be some 'forgiveness' so that a fub-forum could be a positive place to hang out.
My 'campaign' for a dedicated horns sub-forum hasn't progressed but I've seen a lot of good horns forums over the years which haven't all survived and I think DIY Audio could inherit the earth on this front if it had a suitable sub-forum. Of course, some horns are more like TL's so there'd have to be some 'forgiveness' so that a fub-forum could be a positive place to hang out.
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you will find him and his work here. You need a facebook account to view the page
https://www.facebook.com/groups/lowthermodificationsupportgroup/user/100011463857088
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I am interested in this one, as I have a Lowther driver looking for a home. It's a 5" relative so maybe needs a modified horn. Fascinating name for this one, the Schalmei instrument was unknown to me. Wiki says it's also known as the Martinshorn.
Another place to find him: http://www.hm-moreart.de/1.htm
Another place to find him: http://www.hm-moreart.de/1.htm
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I believe its achieved through the missing fundamental concept as explained here:
https://en.m.wikipedia.org/wiki/Missing_fundamental
A resultant tone is "produced when any two loud and sustained musical sounds are heard at the same time."[6]
In pipe organs,[7] this is done by having two pipes, one pipe of the note being played, and another harmonically related, typically at its fifth, being sounded at the same time. The result is a pitch at a common subharmonic of the pitches played (one octave below the first pitch when the second is the fifth, 3:2, two octaves below when the second is the major third, 5:4). This effect is useful especially in the lowest ranks of the pipe organ where cost or space could prohibit having a rank of such low pitch. For example, a 32' pipe would be costly and take up as much as 16' of vertical space (if capped) or more commonly 17-32' (if open-ended) for each pipe. Using a resultant tone for such low pitches reduces the cost and space factor, but does not sound as full as a true 32' pipe. The effect can be enhanced by using further ranks in the harmonic series of the desired resultant tone.
https://en.m.wikipedia.org/wiki/Missing_fundamental
A resultant tone is "produced when any two loud and sustained musical sounds are heard at the same time."[6]
In pipe organs,[7] this is done by having two pipes, one pipe of the note being played, and another harmonically related, typically at its fifth, being sounded at the same time. The result is a pitch at a common subharmonic of the pitches played (one octave below the first pitch when the second is the fifth, 3:2, two octaves below when the second is the major third, 5:4). This effect is useful especially in the lowest ranks of the pipe organ where cost or space could prohibit having a rank of such low pitch. For example, a 32' pipe would be costly and take up as much as 16' of vertical space (if capped) or more commonly 17-32' (if open-ended) for each pipe. Using a resultant tone for such low pitches reduces the cost and space factor, but does not sound as full as a true 32' pipe. The effect can be enhanced by using further ranks in the harmonic series of the desired resultant tone.
thanks guys, thanks sumotan for opening,
Doppelhorn 20 is only a study, the POSAUNE XL is much easier. Softfibre is cheap but 11-13 mm and not available, my last test for my new one i am sure that high desity 13 mm pin wall cork will work, easy to work on, less dust, but much more expensive.
Doppelhorn 20 is only a study, the POSAUNE XL is much easier. Softfibre is cheap but 11-13 mm and not available, my last test for my new one i am sure that high desity 13 mm pin wall cork will work, easy to work on, less dust, but much more expensive.
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yes, look http://www.hm-moreart.de/25.htm, yes, FA22 super MT, less HT energy as others because of the small HT cone.
Posaune XL inside wide 270 mm, no other change to POSAUNE plan.
Posaune XL inside wide 270 mm, no other change to POSAUNE plan.
Helped with the phase plugs (required IMO).
http://www.planet10-hifi.com/downloads/B200-phase-plug.pdf
The base needs a couple divots to clear the unflat parts of the polepiece.
dave
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