JXR 6 HD in open or very small enclosure - diyAudio
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Old 8th April 2013, 04:13 PM   #1
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Default JXR 6 HD in open or very small enclosure

hi,
I am new on this forum, I've duilt many enclosures ( bad or better for 35 years), but just now i'll like to try something new . those would be used as outside speaker on my sailing boat.
I need them to be real small and simple, so I was thinking of a Jordan JXR 6 HD or Markaudio Alpair 7 Generation 3, in an open baffle hoping to get about down 100 hz response...i have only my ears to control and may some of you could tell about similar experiences
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Old 8th April 2013, 06:35 PM   #2
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not sure its possible to reach 100hz open baffle with either of these; try winisd, treat like an IB and see what the curve does
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Old 8th April 2013, 06:48 PM   #3
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for a closed enclosure 1.4 l I get about 95 hz (-3db) with a theorical curve , do you think it is beter than with an open one
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Old 8th April 2013, 07:18 PM   #4
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yes. I would use the 1.4 liter box, you wont do better without a HUGE baffle.
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Old 8th April 2013, 07:29 PM   #5
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with winisd theorical curve show for a closed 1.4l about 120/85Hz (-3/-8 db)...does anyone tried that ?

Last edited by motutunga; 8th April 2013 at 07:41 PM.
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Old 8th April 2013, 07:31 PM   #6
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i am very happy to have find this forum... and I'll try a closed 1.4l and an IB witch is supposed to give 100/75hz (-3/-8db)

Last edited by motutunga; 8th April 2013 at 07:42 PM.
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Old 8th April 2013, 08:57 PM   #7
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oh. Do you mean IB or OB? If Qts is high Infinite Baffle may give you a bit more. Otherwisd id stick with a small sealed box. IB may work better if you are trying to hide the speakers too.
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Old 8th April 2013, 11:31 PM   #8
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What I meant by IB was if you input a huge figure in winisd ie 300 litres you'll get a rough idea of an open baffle response for these drivers.
Also, if you plan to use a 1st order passive and cross low near the resonant frequency of the driver, u will run into problems with the impedance and it won't roll off where u want it to
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Old 9th April 2013, 07:56 AM   #9
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yes i understand that ( about how to figure an IB); about impedance I use no cross over, just nothing.
the reason is : this item will be outside at sea and will be spoiled in one or two years ( depends on the wheather) so I need to make it cheap and easy maintenance if possible.
As far as i know , no sailor wants to have real sound nor inside nor outside , I need to create the idea.
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Old 9th April 2013, 08:04 AM   #10
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yesterday evening I thought of a very little bass unit (about 1.5l + 1.5l) designed as a pass band enclosure using this driver :Aura NS-193-8A , and hope to get down to 60-70 hz, but all that with a very low 84 db..
I spent only 12 hours on your forum and that gave me full of ideas
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