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#1 |
diyAudio Member
Join Date: Jun 2005
Location: West Vlaanderen
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I'm planning on trying to build a good seat-shaker for a friend, just to experiment.
I have strong magnets and a coil with a core. So I need a good suspension to get the coil and core centered between magnets. How can I build a good suspension that doesn't restrict the movement too much? I have strong short springs that don't attract much to magnets.
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Break in your loudspeakers at 35% RMS power Right-click→'save as...' Brown noise mono 192kbps(hit "repeat") |
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#2 |
diyAudio Member
Join Date: Jun 2005
Location: West Vlaanderen
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Did a fast setup. The springs keep the magnets away and the magnets keep everything together by pulling force only. These are tough springs!
The coil is 20Ω DC , that's a pity but at the moment I have no other coil that is suitable. It is vibrating clearly at only 10W but nowhere near 'buttkicker' levels of course. I don't expect to reach that efficiency either. How to improve? pic's or it never happened, right? ![]()
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Break in your loudspeakers at 35% RMS power Right-click→'save as...' Brown noise mono 192kbps(hit "repeat") |
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#3 |
Banned
Join Date: Apr 2012
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It's a good idea.
A regular enclosed subwoofer with a mechanical connection to the couch works great too. Experiment, experiment. |
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#4 |
Banned
Join Date: Apr 2012
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Any further progress here? Interesting project.
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#5 |
diyAudio Member
Join Date: Jun 2005
Location: West Vlaanderen
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Sorry Alvis. Haven't got time, living alone and full time job...
If I could just get a mechanical setup to work with but I doubt that magnets are a good thing, since they attract to the iron core by themselves, it might work against the goal. I would like to experiment without core, or without magnets. Any thought is appreciated! Thanks for your interest.
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Break in your loudspeakers at 35% RMS power Right-click→'save as...' Brown noise mono 192kbps(hit "repeat") |
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#6 |
diyAudio Member
Join Date: Jun 2008
Location: N.E. Ohio
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Your transformer suspended on springs in a C core wired out of phase:
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Regards, Dan |
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#7 |
diyAudio Member
Join Date: Jun 2005
Location: West Vlaanderen
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I don't get it completely, would the springs be between the coil and de C-core?
Where does the vibration come from? I doubt the coil would want to jump up and down the core this way.
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Break in your loudspeakers at 35% RMS power Right-click→'save as...' Brown noise mono 192kbps(hit "repeat") |
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#8 |
diyAudio Member
Join Date: Jun 2008
Location: N.E. Ohio
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Here you go, how about now?
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Regards, Dan |
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#9 |
diyAudio Member
Join Date: Jun 2005
Location: West Vlaanderen
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Thanks for the drawings.
I'll have to do more tests to see what it does. Just need some spare time first. thanks.
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