Altec A7 + ported cabinet

[teddy.edwards1]

wanted to know what you guys thought of putting a TAD 1601B in a ported box below the A7's shown in these pictures:

two stacks like this with 2441 on a 2390 lens and 2405 tweetrs:
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another two with bigger 2395 horns
and I'd be relocating these subs that's under one of 'em:
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a photoshopped pic that shows all 4 main stacks - but looks a bit odd 'cos it's bent round in a panoramic view
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and one of the monitor stacks, might squeeze a TAD cabinet in here too, maybe lose a sub

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am thinking of building these:
http://www.geocities.jp/arai401204/Enclosure/E170/E170.html
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if i need to alter the dimensions of this sub can i do so by an inch as long as i keep the internal volume the same?
if i can't do that way then i can make the box bigger but add a sheet of ply to one of the interior surfaces to compensate?

thanks for any help

btw the A7's have Altec 515 8GHP in them at the moment, i was gonna swap em for TAD1601B's... but I did try and I just can't lose that upper bass detail in the original drivers, which is a shame as the lower bass on the TAD1601's in the A7' is smooth and STRONG, if only I could have my cake and eat it.

thanks
tom

PS - this is kind of like a big room in a house crossed with a really small night club.

[teddy.edwards1]

jbl bullet tweeters in the centre of the room

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nice floor... definitely the highest quality finish on any bit of woodwork in the room!
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[teddy.edwards1]

Or, maybe maybe I could build these... if there were some designs for the TAD loaded cabinet as shown in this picture:

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which can be checked out on this nice page:

http://www.sonicscoop.com/tag/how-to-design-monitors-for-control-rooms/