Sealed RL-P18 Build around 8ft³ - Home Theater Forum and Systems - HomeTheaterShack.com

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post #1 of 27 Old 09-18-09, 08:55 PM Thread Starter
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Sealed RL-P18 Build around 8ft³

This is my build thread which spawned from the Linkwitz thread.

This box was built out of 3/4" MDF with a double face. It is now being wrapped in 3/4" Baltic Birch and will be trimmed out with Maple so all sides will be double wall with a triple wall front. I am thinking of a rosewood type stain.
Should finish out around 7.6 ft³.

The upper window brace.


All bracing in place.


Laminating 2 faces of 3/4" MDF, I can always use more clamps...


Faces being glued to the box..


Birch face being glued to the front.
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post #2 of 27 Old 09-19-09, 02:02 PM
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Re: Sealed RL-P18 Build around 8ft³

Looking forward to seeing the finished product... thanks for posting.
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post #3 of 27 Old 09-19-09, 03:50 PM
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Re: Sealed RL-P18 Build around 8ft³

Looking good! Nice bracing!




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post #4 of 27 Old 09-24-09, 08:50 PM Thread Starter
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Re: Sealed RL-P18 Build around 8ft³

Another update.
Gluing up the maple strips is slow going, taking my time(don't want to mess up the finish).
While those are in the clamps, I have primed and put the first coat of satin black paint in the recesses for the sub and binding posts. I have also installed the hurricane nuts.
After I get all the strips glued up, I will run the flush panel bit around the box and add a nice roundover.
I still have to finish planing down the hickory to add to the front.
BTW...this box has become rather heavy and the sub still hasn't been installed....

Painted rebate.


I was able to get the same grain pattern on both sides of the sub.


Here is a shot of some of the maple strips ater they were glued in.


Recess for binding posts
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post #5 of 27 Old 09-24-09, 08:56 PM
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Re: Sealed RL-P18 Build around 8ft³

looking very good so far - keep it up.
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post #6 of 27 Old 09-25-09, 10:14 PM Thread Starter
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Re: Sealed RL-P18 Build around 8ft³

I need some ideas for feet, as this thing will be sitting on a hardwood floor. I am guessing it will weigh in around 250lbs or more. So they will need to be sturdy.
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post #7 of 27 Old 09-28-09, 10:17 PM Thread Starter
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Re: Sealed RL-P18 Build around 8ft³

Getting closer. I finished all the routing tonight. Here are several more pictures. It is really hard to get good pictures of such light wood under florescent lights. They tend to wash out the grain.
The top and bottom face plates(wide boards) are hickory. The side rails between the hickory is wormy maple.
The stuff that looks like glue squeeze-out is actually a stainable wood filler, that will be sanded down flush.
I am ready to start sanding and staining(this may take a while). I have been trying different stains on scrap pieces, and I really haven't found one I like on the birch yet.
I also have the grill pieces glued up and hope to get it covered in the next few nights. I think it looks really cool. I will post pics when it is finished.








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post #8 of 27 Old 10-04-09, 10:20 PM Thread Starter
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Re: Sealed RL-P18 Build around 8ft³

I finally got this thing sanded and stained. I just need to add a few more coats of polyurethane and it has turned cold and rainy here, so it's one coat a day for now. I solved the feet problem and bought an Auralex Gramma.
The pictures are still a little washed(flourescent lighting and a flash?)

This picture is the closest to the true color of the three pics.


The face frame was stained natural.


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post #9 of 27 Old 10-06-09, 02:38 AM
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Re: Sealed RL-P18 Build around 8ft³

Wow, looks good. Looking forward to the results

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post #10 of 27 Old 10-10-09, 08:47 PM Thread Starter
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Re: Sealed RL-P18 Build around 8ft³

Almost there! It has moved from workshop to the house. This thing is H E A V Y!
Since last update- 6 coats of polyurethane, Dayton Binding Posts installed, grill magnets are installed (covered with black felt trim), and tonight it was stuffed with 4 pounds of Premium Polyester Fiberfill.
Hopefully, I can get the driver installed tomorrow. I would do it tonight but it is bedtime for the little ones, and I would have to fire it up if it were installed...



By the way that is an Auralex Gramma laying next to the box for an idea of the scale of the box.
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