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| Above - Original sanctuary platform. |
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| Above - Renovations begin! |
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| Above - Balcony classrooms and sanctuary rear wall being removed. |
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| Above - New rear wall framed, sprinker system installed, HVAC installation in-progress. |
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| Above - Side wall diffusion and HVAC duct soffit framed. |
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| Above - Side wall outrounds framed with steel studs. |
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| Above - An insulated outround. |
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| Above - Installing two layers of 1/4-inch sheetrock. The installers told me they enjoyed this work and thought it was easier than installing it flat. |
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| Above - Sheetrocked diffusive outrounds. |
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| Above - New rear wall and media booth. |
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| Above - Finishing the drywall. |
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| Above - These are the nearly complete speaker brackets; the photos below show a little behind-the-scenes of their making. |
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| Above - Cutting the flat bar |
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| Above - Drilling |
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| Above - More drilling |
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| Above - Machining the box tube to the right dimensions so it fits inside the larger tube. |
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| Above - The first welds begin. |
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| Above - Three completed, assembled speaker brackets. These feature a height adjustment to allow the speakers to be raised or lowered once installed; this provides flexibility when mounting the brackets to the existing structure. |
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| Above - A bracket designed to mount one of the horns. |
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| Above - This is the lower portion of the bracket which attaches to the horn (above). The bracket is built as two pipes, one inside the other. They are connected via a 1/2-inch threaded rod run through them. This allows the height adjustment by simply turning (screwing in or out) the smaller pipe. A small setscrew is all that's needed to ensure the speaker doesn't turn anymore once positioned correctly. The bracket was built so the two pipes can never be taken apart, unless they're cut. This height adjustment also provides the panning. Tilt is acheived by the center bolt and curved track cut into one side of the lower section of the bracket. Once the angle is adjusted correctly, the center bolt and then the angle set screw are tightened. |
If you're the mechanical-type, here are a couple video clips:
Milling
Welding |
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Above - Here's one of three re-worked Altec Voice-of-the-Theater speakers. The church owned these and we had Tom Danely of Servodrive, Sound Physics Labs engineer the details to further improve their performance (including which drivers and crossovers should be used). Additional supports were added inside and the ports redesigned. Many hours were spent on this portion of the project alone. The boxes and drivers have been redesigned to the point that they now handle 500+ watts (originally 120 watts), they have a very smooth phase response, an octave was added to both the low and high end, the sensitivity has been greatly increased, and the response is much smoother. These are just some of the main improvements made. To get a new speaker today that will operate the same as these boxes would require one to spend nearly $3,000.
The speakers were refinished by one of the church audio team members; he put in a great deal of time to make these boxes look good on the outside (not to mention all the modifications made to the inside!).
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| Above - Installing the speakers. It took a total of about 8 hours to install all 5 speaker brackets and speakers. |
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| Above - Mounting of the main speaker brackets. |
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| Above - Mounting of the horn brackets. |
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| Above - Nearly complete room. |
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| Above - A few months after these photos were taken, the front walls were finished with a new layer of drywall. |
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