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Dual Phase Plugs, Mid Horn - Build Pics & ABEC |
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ARR_PG 
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Joined: 14 October 2013 Status: Offline Points: 89 |
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 Topic: Dual Phase Plugs, Mid Horn - Build Pics & ABECPosted: 14 April 2020 at 5:37pm |
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Dual 4" driver Mid Cab. 500hz - 4khz       Polar Plots and dispersion graphs are without the phase plugs. ABEC3 and VACS (Horizontal plane) I did sim the phase plugs in ABEC to get the path lengths right. Phase plugs should get up to 4khz. Testing when drivers arrive
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Timebomb
Old Croc 
Joined: 11 October 2004 Location: Lancaster Status: Offline Points: 2716 |
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Posted: 14 April 2020 at 9:23pm |
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Very nice, i think they will reach higher than 4KHz, What drivers are you using?
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James Secker facebook.com/soundgearuk
James@soundgear.co.uk www.soundgear.co.uk |
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ARR_PG
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Posted: 14 April 2020 at 10:57pm |
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Thanks mate. Hope so.
B&C 4NDF34 4" 100w rms, 200w power handling. Only problem is the plugs need to stick out behind the cab into the driver cone space a bit more. I might rebuild them to do so after I test this.
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Timebomb
Old Croc
Joined: 11 October 2004 Location: Lancaster Status: Offline Points: 2716 |
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Posted: 15 April 2020 at 8:43am |
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Yeah getting it flush to the cone will help, it might be easier to 3d print them rather than make them out of wood?
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James Secker facebook.com/soundgearuk
James@soundgear.co.uk www.soundgear.co.uk |
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ARR_PG
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Posted: 15 April 2020 at 2:57pm |
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Yeah coz its small 3D printing might be affordable if it works.
Here is the dispersion at 4khz with the phase plugs. The frequency response SPL shows a huge rise at 2k but my mesh in ABEC isnt exactly right so hoping for the best in the live test.  |
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luthier
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Joined: 21 July 2013 Location: UK - London Status: Offline Points: 271 |
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Posted: 16 April 2020 at 4:56pm |
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Looks like a a time 3d printing might actually be viable, just stay away from the the nasty FDM printers. I would go for an SLA print.
Another option would be sikablock machined on 4 axis cnc. |
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Lasse Lukkari
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Joined: 09 March 2004 Location: Finland Status: Offline Points: 615 |
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Posted: 16 April 2020 at 5:06pm |
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Nice work!
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