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Old 11th December 2004, 11:35 PM   #11
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you mean something like this? Click the image to open in full size.
about 6.5' tall, 6 10's per side, open baffle, im going to use a single sealed 15'' from 40-50 on down, and a 16 nsb array (per side) is the mid range which is also open baffle. I'm still trying to work out what will be the best option for the highs.
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Old 12th December 2004, 02:34 AM   #12
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Yup, that what i was thinking exept with 12" and a ported enclosure.....more for SPL then for SQ of an open baffle.

Anyone want to help with room gain???
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Old 14th December 2004, 10:59 PM   #13
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Heres a few more pics of the progress. I routered out the 6.5" holes so the drivers with fit nice and flush when mounted. Because they are mounted so close and my measurements are not quit perfect some of the wood between the holes was so thin it broke when a routered them. I cured this by simply drawing a nice rounded curve and routered them out by hand.

In this pic you can see how thin the wood was between the drivers. You can also see the halve circle I draw to cure the problem and made everything look nice and clean.
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Old 14th December 2004, 11:03 PM   #14
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Heres the holes after I routered out the curves.
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Old 14th December 2004, 11:04 PM   #15
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Heres a pic after all the holes were done. I one hole that is not done was a test hole to get the right size and still needs to be done.

I think it came out looking really nice. The rounded parts between the drivers keep it a nice look for some reason, LOL.
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Old 15th December 2004, 03:06 AM   #16
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You will dig these when they're done.

Nice work!
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Old 15th December 2004, 04:13 AM   #17
TheoM is offline TheoM  United States
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Default your line arrays

Great construction. The kit people will sell a set of cabs like that for over 1000 bucks.

The potential trouble spot is the tweet line. You are breaking the golden rule of no more than a wavelength between cone centers. You might consider selling a pair of cabs to someone and using the money to buy some ribbon tweeters. (which, properly mounted, resolve the cone center/wavelength issue by virtue of not having a cone center).

I think that if you are going to breathe all that mdf dust you should go for broke and get the drivers you want. The speakers will last you a lifetime - so its... only pennies per day - unless of course you expect your life to be short, which we hope is not the case. .
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Old 15th December 2004, 04:18 AM   #18
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Thanks for your nice remarks on the cabs.

I am not sure I follow you about the tweeters. I have not even started on the tweeters yet. They will be lined just like the 6.5" drivers, AKA, as close as posable. Should take somewhere around 75 tweeters per tower. Did I miss something in my design???
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Old 15th December 2004, 10:13 PM   #19
TheoM is offline TheoM  United States
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Default Tweeter line

This page
describes the process I used to design my line arrays, and the reasons for the choices. It also contains links to Jim Griffin's white paper which has the info you will need relative to the cone/center spacing to wavelength ratios. ted
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Old 16th December 2004, 02:27 AM   #20
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Thanks for the link. I have not seen that page before but I have read the white paper many times.

I still do not say how you can say the tweeter spacing is wrong when there are not tweeters to space wrong yet. Again if you see something that is wrong could you be more specific.
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