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Multi-Way Conventional loudspeakers with crossovers

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Old 6th February 2013, 09:59 AM   #831
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Quote:
Originally Posted by JRKO View Post
cheaper than the 510 ...ported 75l cabinet tuned to 45hz ....

the neo 500 ought to give you a small bit more bass output than the ferrite 510, due to the slightly higher Qts, all else being the same, but maybe only theoretical

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There's always this type of tractrix to try. It looks a tad simpler....
looks more like a modified Iwata to me
add rounded solid wood at front edge of top and bottom, and you have it
the construction still does have a few weird angles that tend to be difficult
but it looks cool
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Old 6th February 2013, 10:10 AM   #832
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Thats what WinISD shows too. More depth, slightly less snap I'd guess.

510 has a -3db of 63hz when tuned to 52Hz

I will have some control with the miniDSP as well thou

15PR400 behaves similar to the 500 but the QMS is 6 as opposed to 10 (qes & qts are comparable)

Several of those non circular tractrix type horns show up in a google search for tractrix. Only the two vertical sides follow the tractrix curve
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Last edited by JRKO; 6th February 2013 at 10:20 AM.
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Old 6th February 2013, 11:48 AM   #833
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I have thought about 'lining' inside of top and bottom with acoustic foam
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Old 6th February 2013, 12:00 PM   #834
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I have to think how to paint the multicells so Mrs JRKO is more approving Gonna be kind of white inside and natural cork outside

this is the only practical idea I can find - How to paint Multicell horns?
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Old 6th February 2013, 12:20 PM   #835
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hmm, some surfaces will always look slightly scruffy, no matter what you do

maybe best the answer is the kind of 'structural paint' used for PA speakers
but probably best use it only on outher surface, and maybe mouth area

but if she is to the 'antique' look, there might some other options like maybe a stained copper look
leaf gold ? maybe you can get 'leaf copper' too
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Old 6th February 2013, 12:26 PM   #836
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Quote:
Originally Posted by tinitus View Post
hmm, some surfaces will always look slightly scruffy, no matter what you do
As the 'cells are mdf they should take ok. I kind of like the fill a cell with paint then open the bottom idea. I wonder about spraying them with a primer first?

So long as they look better than plain ole mdf its ok

natural cork is supposed to help with resonance of these non metal 'cell sets
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Old 6th February 2013, 12:30 PM   #837
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mdf is usually one of the better surfaces for paints
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Old 6th February 2013, 12:39 PM   #838
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wife saw this and said 'No'
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File Type: jpg altec_horns.jpg (39.8 KB, 255 views)
File Type: jpg HPIM2194.jpg (61.1 KB, 247 views)
File Type: jpg multicellampex.jpg (112.6 KB, 250 views)
File Type: jpg picture27.jpg (44.7 KB, 259 views)
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Old 6th February 2013, 12:40 PM   #839
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wife saw this and said 'Okay'
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Old 6th February 2013, 01:18 PM   #840
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ofcourse
try with a touch of very light yellow
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