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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 19th October 2013, 09:45 PM   #91
guangui is offline guangui  Puerto Rico
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Just one word regarding this project...WOW!!! If you were living in Puerto Rico I wouldn't hesitate a second in employing you. A great asset to any industrial company.

Those speakers are worthy of any audio industry magazine. I have see people pay US$50K+ for speakers that don't have the amount of work yours have built into them. After seeing your level of work, I'm sure you will be relentless until you obtain the right sound from them. The sound will match the looks.

Again, great work...Build a 1/4 sized version, and put them up for sale, see what happens. You might not need another job after all. Build a tube amp with the same high end finish as the speakers, and you might have a business in your hands. Having said that, don't count with most of us as customers, after all we are fellow DIY'ers...
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Old 20th October 2013, 08:39 AM   #92
Scottmoose is offline Scottmoose  United Kingdom
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Alas, 1/4 sized versions don't work. Not of this particular type of array anyway; it needs to be floor-ceiling, or at least have a very considerable vertical length & total radiating area. Which doesn't mean other variations couldn't be done utilising some of the skillset employed here though. They wouldn't be cheap, given the man-hours involved, but nor should they be. Rules us broke DIYers out of course (alas).

That aside, couldn't agree more. Excellent work, one of the best DIY arrays I've ever seen, & if industrial / engineering / whatever companies can't see that you'd be a great asset to them, they are clearly mad.

Last edited by Scottmoose; 20th October 2013 at 08:41 AM.
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Old 20th October 2013, 12:15 PM   #93
danny_66 is offline danny_66  Belgium
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The finish looks very good.
Which paint and polish did you use?
My speakers could also use a little more finish
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Old 20th October 2013, 12:31 PM   #94
wesayso is offline wesayso  Netherlands
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Thanks all for the encouragements .
The finish is 6 layers of polyurethane floor finish (oil based) over a nitro based dark antique stain (CBM 221).
Let it dry out for a couple of weeks. Next sand it lightly with 400 grid, followed by 600 grid and 1000 grid (all wet sanded). The polish was done mostly with McGuire automotive products.
A first polish with commandant #4 cleaner, a McGuire scratch-X remover after that, followed by a McGuire deep crystal polish.
I did it all by hand so it takes a while. An orbital polisher would speed things up but I have no experience with those.
The McGuire products are quite safe in use, they break down while polishing avoiding to ruin the finish.
The last polish was done with a piece of foam. I think with a bit of work you can get great results. It surprised me to get that much gloss. I already searched for ways to dull it somewhat until I realized our living room isn't equipped with the many neon lights I have in the garage . In the day time it really looks classy.

On the first try I was a bit too aggressive with the 400 grid paper. There is really no need though, just use it lightly.

Last edited by wesayso; 20th October 2013 at 12:52 PM.
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Old 20th October 2013, 08:54 PM   #95
voxxonline is offline voxxonline  Russian Federation
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The making of: The Two Towers (a 25 driver Full Range line array)
I am among many people who follow this build out of curiosity.
It is a great project .
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Old 20th October 2013, 09:42 PM   #96
wesayso is offline wesayso  Netherlands
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I'm glad to get this much positive responses from all of you. That definitely keeps me motivated.
And, yes... I'll do anything I can to make the sound match or exceed the looks!
Even though I did my best to get a great look, it still followed by carrying out my ideas on possible performance gains and I do hope I'm right about that. A bit of the "form follows function" theory.
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Old 20th October 2013, 10:49 PM   #97
ollyboyd is offline ollyboyd  Scotland
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Wow this is just amazing! Could you explain the process of how how you're going to EQ this with the Behringer?

Many thanks, Ollie
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Old 21st October 2013, 09:18 AM   #98
wesayso is offline wesayso  Netherlands
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Thanks Ollie,

My plan is to EQ using my PC and JRiver Media Player at first. Possibly with an EQ plugin.
I'll take measurements using a calibrated microphone, separate for the left and right channel. Using multiple mic positions and averaging that. This will be done with REW and/or True RTA.
I'll try REW first, it looks like it has some neat features for a job like this.
I played around taking measurements when I setup my Car stereo. I also did some experiments in my home to get a feel for this sort of thing. It made my current old speakers image better than ever before.
I'll be using parametric EQ to get the basic outline and can use the graphic EQ for personal shaping of the curve after that. The gradual down slope towards high frequency is my first target, not flat EQ.
Once I'm happy I'll try and copy the curves with the Behringer. But serious 2 channel listening will be done using the PC setup.

Last edited by wesayso; 21st October 2013 at 09:21 AM.
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Old 22nd October 2013, 09:51 AM   #99
wesayso is offline wesayso  Netherlands
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Doors of the garage open for some natural light...
Click the image to open in full size.
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Old 24th October 2013, 10:08 PM   #100
ravon is offline ravon  Netherlands
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Very, very nice project.
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