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Old 03-03-2011, 07:41 AM - Thread Starter
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Starting the second layer on the sub manifolds. Piled on some weight for clamping.



Here is my mistake with the biscuit jointer - made the joints on the wrong side - These will be covered by the second layer so I filled them in with bondo.

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Old 03-03-2011, 07:44 AM - Thread Starter
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This is what is keeping me from making more progress on the theater - trying to get the other part of the basement finished so I can focus on the theater - Now it is primed and ready to paint. Just need paint, subfloor, trim and carpet and it will be done.

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Old 03-04-2011, 03:21 PM - Thread Starter
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I put drylock on all the exterior walls - I'm not convinced that it will stop water, but I figured I'd be mad at myself later if I do have water issues and I didn't put this on. I guess its worth the peace of mind.

I also started on some of the framing - I'm framing in the subwoofer chamber right now. I can complete that without tearing out any of the HVAC. I figured I'd leave the vents connected to the room above for as long as I can.

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Old 03-09-2011, 10:34 PM - Thread Starter
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Finished up framing the outside walls of the IB chamber. Also put in the insulation.

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Old 03-09-2011, 10:36 PM - Thread Starter
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Also put up the OSB shell for the IB Chamber. Just have to finish up the baffle wall and ceiling.

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Old 03-10-2011, 07:11 AM - Thread Starter
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Anyone have any ideas how to handle this cleanout? I need access but want to keep it soundproof.

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Old 03-10-2011, 09:00 AM
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Anyone have any ideas how to handle this cleanout? I need access but want to keep it soundproof.


That's a good question, but if you're like to insulate around it somehow I'd recommend grabbing some polyfill from walmart to use around it so if you have to open it you're not putting your hands in standard insulation...
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Old 03-10-2011, 12:39 PM - Thread Starter
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I'd like to build a box around it and have it sealed off, but there's not much clearance behind the box. - I have 2 of these I have to deal with in that room. At least they do not stick out several inches like some I have seen here.
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Old 03-12-2011, 07:26 PM - Thread Starter
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I took the advice given here and used 2x4's for the ceiling instead of just plywood - I ran them flat side to give me more clearance - I figured with only a 3 1/2 foot span they should be fine.

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Old 03-12-2011, 07:50 PM - Thread Starter
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Made a bit more progress on the chamber



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Old 03-13-2011, 10:13 AM - Thread Starter
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I framed in the AC condenser lines - This is one thing I did not want to remove.

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Old 03-13-2011, 10:13 AM - Thread Starter
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Also cut out the holes for the drivers in the manifold.

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Old 03-16-2011, 03:30 PM
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I thought this was a theater build thread? All I see is work on your subwoofers.

I am running a four 18" Fi IB setup in my basement as well. Love it!

Very nice space you have, looking forward to see your progress.

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Old 03-17-2011, 07:54 AM - Thread Starter
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Yes I'm working on the fun stuff first. . The IB chamber has been a fair amount of work - Its like building an extra room. I'll use 12 sheets of OSB and 24sheets of drywall, That's more than I used in the other room 12x24 room I just finished drywalling.
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Old 03-17-2011, 07:59 AM - Thread Starter
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I did make a bit of progress yesterday until I managed to shoot a 16 gauge nail into my thumb - it curved in the 2x4 I was holding and popped out right into my thumb. It hurt enough that I called it a night.

I built the platforms that the IB subs will sit on so I can get the rest of the wall framed.



I also filled the platforms with sand. I didn't have any thick plastic around but I did have a roll of tyvek. I thought it would work fine. The sand is a little damp so I'm leaving it open for a while to dry out. Hoping it doesn't take ages to dry like some I have seen here. These little 2 feet square platforms took 300lbs of sand - Not looking forward to filling the stage.

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Old 03-17-2011, 08:12 AM - Thread Starter
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GoCaboNow - I just checked out your room - I had not seen that one before - looks great - I cant believe you finished the construction in 7 months. I hope I can finish mine that fast - I'm planning on it taking longer though - with everything I want to do and only working evenings and weekends I expect it to take longer.
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Old 03-17-2011, 11:15 AM
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Quote:
Originally Posted by stockmonkey2000 View Post

GoCaboNow - I just checked out your room - I had not seen that one before - looks great - I cant believe you finished the construction in 7 months. I hope I can finish mine that fast - I'm planning on it taking longer though - with everything I want to do and only working evenings and weekends I expect it to take longer.

Thanks! Always best to take your time. My daughter wanted to have her
11th birthday a slumber party in the theater - I was working 40-50 hour work weeks in the theater, in addition to my normal job. Was alot of fun though.

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Old 03-18-2011, 07:21 AM - Thread Starter
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Between family and job I'm lucky to find a few hours in the evenings to work on it. I see some of these builds taking 3 years + and it scares me.
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Old 03-18-2011, 07:46 AM
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Bad luck on the thumb - but the IB chamber is looking like fun. =)
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Old 03-18-2011, 08:09 AM
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Originally Posted by stockmonkey2000 View Post

Yes I'm working on the fun stuff first. . The IB chamber has been a fair amount of work - Its like building an extra room. I'll use 12 sheets of OSB and 24sheets of drywall, That's more than I used in the other room 12x24 room I just finished drywalling.

I can relate to the "extra room" comment Have you thought about how you will get in and out of the space during construction? Access hatch or do what I did which is the (very comical) climbing through the driver cutouts.

Also it looks at though the two manifolds are quite close together so I'm guessing you will be mounting the drivers with the baskets pointing into the manifold?

It's fun watching...

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Old 03-18-2011, 08:34 AM - Thread Starter
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Moggie - When the boxes are placed in the proper position I'll have 36 inches between the boxes. I should have pictures up soon with the manifolds in position. I plan on putting an access panel door made of MDF between the two manifolds - Even if I do I mount the drivers with the baskets in the chamber I should have 18 inches between the drivers - That should give me enough room to get in there.

I haven't tried climbing through the driver holes - I'm pretty sure I wouldn't make it and would end up stuck - I have some weight I need to lose before I could manage that.

My concern is trying to get all the drywall up in that small place - I think I have a way worked out to get in in there before it is sealed up but it is going to be fun to try and move sheets around in a small space like that.

By the way Moggie, your build is one of my favorites. Amazing work you have done. I would love to try and replicate what you have done with your screen but I'm pretty sure I lack the skills to do that - I know someone that can get the Somfy motors from for cost so I may give it a try. Long ways until I get to that point though.
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Old 03-19-2011, 07:45 PM
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My concern is trying to get all the drywall up in that small place - I think I have a way worked out to get in in there before it is sealed up but it is going to be fun to try and move sheets around in a small space like that.

That's precisely the reason I framed the IB chamber wall *after* I had completed the room shell. The result is that only one side of the IB chamber wall is dry walled but is hasn't been an issue for me. The process was much easier. Anyway, probably a little late for you to change anything.

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Old 03-19-2011, 10:19 PM - Thread Starter
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That's precisely the reason I framed the IB chamber wall *after* I had completed the room shell. The result is that only one side of the IB chamber wall is dry walled but is hasn't been an issue for me. The process was much easier. Anyway, probably a little late for you to change anything.

I would have done it the way you did - it certainly makes the most sense but with the joists running the other way over the chamber there was not a good way to tie that section of ceiling into the floating joists I'll be doing for the rest of the ceiling. For a while I debated using clips and channel - it would have made it easy but I thought the floating joists would perform better - and should be less expensive also. Also to do the whole room I have to remove the HVAC that you see in the pictures. With it still a bit cold here, I thought It made sense to just do that section so I could still have heat in my family room above. By the time the chamber is done it should be warm enough that I can remove the HVAC and finish the rest of the room. It does cause me a bit of extra pain this way and I have to double drywall both sides of the baffle wall.
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Old 03-20-2011, 09:50 AM - Thread Starter
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The front wall is taking shape a bit - The center panel and the sub manifolds are not attached yet - I'll remove those so I can get in there to drywall.

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Old 03-20-2011, 06:32 PM - Thread Starter
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I caulked the osb inside the chamber - I used OSI - SC175 sound sealant.



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Old 03-20-2011, 06:34 PM - Thread Starter
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I also taped up the screen dimensions to see how it fits the space - This is a 130" diagonal 2.40:1 scope screen.

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Old 03-21-2011, 10:01 AM
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Old 03-21-2011, 12:02 PM
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This is looking great Stockmonkey2000... Hope you nail that screen down really good... By the looks of it, those IB's are gonna blow the screen clean off the wall.

Keep up the great work!
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Old 03-21-2011, 01:04 PM - Thread Starter
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This is looking great Stockmonkey2000... Hope you nail that screen down really good... By the looks of it, those IB's are gonna blow the screen clean off the wall.

Keep up the great work!

I hope that is not the case - The screenwall will be a couple feet in front of the baffle wall - It will also be a acoustically transparent screen. I'm worried that it will move the screen but checking with others that have done similar builds there has been no screen movement. I also made the box quite a bit bigger than needed so that there is a bigger throat to handle the large volume of air.

Another benefit of the bigger box - FI is supposedly developing some 22 inch infinite baffle subs - I wanted to make sure that the box could accommodate the larger drivers .
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Old 03-21-2011, 01:06 PM - Thread Starter
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By the way xzener - I just tried clicking on your signature link to your theater and the link appears to be broken. Just thought you'd like to know. I was able to find your thread fine through the search. Looks like you have been making big progress lately.
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