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The making of: The Two Towers (a 25 driver Full Range line array)
The making of: The Two Towers (a 25 driver Full Range line array)
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Old 8th December 2019, 10:21 AM   #5501
Halair is offline Halair  Norway
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Old 8th December 2019, 11:30 AM   #5502
wesayso is online now wesayso  Netherlands
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Thanks for the positive feedback guys! Much appreciated.

I won't make any decisions about processing until I see what they do in a measurement. Though I will say that I'm hoping to shave off about 6 dB of the array's bottom end, while keeping them mostly full range and make up for that with the subs. The goal is to get more uniform balance left to right down to an even lower frequency. Right now that balance is made by shifting energy in the arrays below about 80 Hz. I'm hoping to make up for that with the subs instead.
I still have to see measurements first to know how high in frequency these subs can support the arrays. As long as they are down far enough by ~900 Hz, whose 3rd harmonic is responsible for that nasty peak at ~2700 Hz. So in theory they can run up to about ~200 Hz as helper woofers for the arrays.
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Old 9th December 2019, 06:43 PM   #5503
wesayso is online now wesayso  Netherlands
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Some more inner details I've been working on.
As mentioned a bit earlier in this thread, the inner walls of the enclosure have been covered with MLV.

The making of: The Two Towers (a 25 driver Full Range line array)-mlvwalls-jpg
Making all the walls approximately one Inch in thickness...

The aluminium box, protecting the amplifier also got a cover-up with MLV:

The making of: The Two Towers (a 25 driver Full Range line array)-eindcap-jpg
The speaker-out are in place as well as a ground connection (not seen here).

The way it looked before:

The making of: The Two Towers (a 25 driver Full Range line array)-jpg

And finally a detail of the protection screen, as seen from the inside:

The making of: The Two Towers (a 25 driver Full Range line array)-detail-jpg
Hardly visible, the screen is sunk into the baffle by a couple of mm and glued in place.
The same rubbery glue was used to seal off the corners of the aluminium cover.


Almost ready to start impedance measurements. Sadly I ran out of time as the old laptop wouldn't work with me today. That's a job for next weekend.
Then on to finishing the amplifier connections etc...

I did say I would take my time .
Attached Images
File Type: jpg eindcap.jpg (222.0 KB, 105 views)
File Type: jpg detail.jpg (252.9 KB, 57 views)
File Type: jpg MLVwalls.jpg (181.6 KB, 56 views)
File Type: jpg case.jpg (210.4 KB, 55 views)
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