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Build log: DIY rotary sub for contemporary HT in 100 year old house? - Page 36

post #1051 of 1242
Thread Starter 
Quote:
Originally Posted by RTROSE View Post

Hey nice score on the 5010. Looking forward to seeing what your impression is regarding the Epson. I have the 8350 and I really am enjoying it. I'm sure the 5010 is quite a bit better than the 8350.

Oh as for living up the thread a little, nothing like a good set of subwoofers to get the ole heart beating a little faster!

I have an Epson 720 with an bulb on its last legs right now, so the 8350 would be a step up for me at this point! The 8350 is supposed to be a very nice PJ, especially for the price. I'm sure the 5010 will blow me away between the increased resolution, contrast, brightness, sharpness and color...plus 3D.

I have my new HTPC hooked up and it is so nice and fast compared with my several year old one.

I'll have to be on the lookout for more subwoofer pics.
post #1052 of 1242
Thread Starter 
I put bass traps in the front of the room. Heck if I can tell the difference. Maybe when I do the rear corners it will be more apparent?

I did listen to a bit of dubstep which is my bass demo stuff. I guess I'm hitting 103 db on some of the bass, but I have another 15 db or so on the AVR. The screen is only shaking a little.
post #1053 of 1242
Quote:
Originally Posted by AndreasMergner View Post

I put bass traps in the front of the room. Heck if I can tell the difference. Maybe when I do the rear corners it will be more apparent?

I did listen to a bit of dubstep which is my bass demo stuff. I guess I'm hitting 103 db on some of the bass, but I have another 15 db or so on the AVR. The screen is only shaking a little.

Just imagine how impressive this demo stuff could be - if you had a rotary sub...?
post #1054 of 1242
Thread Starter 
Quote:
Originally Posted by cuzed2 View Post

Just imagine how impressive this demo stuff could be - if you had a rotary sub...?

I hear ya. It's not like I don't want to finish this thing! My theater has been a bit on the ghetto side for a year with just a futon couch (to be relocated to the guest room this weekend), NO lighting, no door, and you enter through an unfinished basement....not to mention that the walls are still just plain drywall. I think a demo might be more impressive if I had some of the other stuff done too!

...at least I get to use it and enjoy it in the meantime. I will get it done!
post #1055 of 1242
Ah,

I had forgotten what your original starting point was like. Ya know you have no business getting a new PJ with so much unfinished business around your build you will be distracted even more!

Oh, well. Speaking of subwoofers I came across this little gem here.
Might be a little difficult to shoe horn that into the theater though.

Regards,

RTROSE
post #1056 of 1242
Thread Starter 
Quote:
Originally Posted by RTROSE View Post

Ya know you have no business getting a new PJ with so much unfinished business around your build you will be distracted even more!

You are entirely correct. I will likely take as long to build mine as you have to build yours. Only difference is that I will be able to watch movies the entire time!
post #1057 of 1242
Quote:
Originally Posted by AndreasMergner View Post

You are entirely correct. I will likely take as long to build mine as you have to build yours. Only difference is that I will be able to watch movies the entire time!


Ha! Excellent point! Painful but true. Only I probably would not have gotten past rough framing and electrical had I put the PJ up then. Yes I would have been able to watch movies, but my space would have never gotten done. You must have more drive and conviction than I to keep progressing AND have a PJ hung. I know that would have been very hard for me to do, especially when I found myself just watching the image without speakers. Like a moth to the flame, I was.

Regards,

RTROSE
post #1058 of 1242
Thread Starter 
Quote:
Originally Posted by RTROSE View Post


Ha! Excellent point! Painful but true. Only I probably would not have gotten past rough framing and electrical had I put the PJ up then. Yes I would have been able to watch movies, but my space would have never gotten done. You must have more drive and conviction than I to keep progressing AND have a PJ hung. I know that would have been very hard for me to do, especially when I found myself just watching the image without speakers. Like a moth to the flame, I was.

I had my PJ for a couple of years before I even started my HT. I had it in a very small bedroom. I think that is part of the reason my progress didn't stop. I use the PJ every evening for work so I'm in the HT and seeing that it isn't done.
post #1059 of 1242
Thread Starter 
I received my new projector today, an Epson 5010. I really like it so far! It is much sharper, brighter, better blacks and more contrast. Oh, and it does 3d very well. I think my eye muscles need a bit of 3d training because they get sore after 30 minutes or so. It is the same feeling I had when I started watching my first PJ.

The only issue I'm having is a can't seem to watch a Bluray in 3D off the PC. I can using SBS (side by side), however.
post #1060 of 1242
Excellent. I really want to hear more about what you think when you have a little more time watching your new PJ. I was very close to getting the 5010, but I saved a few bucks so I could put that towards my speaker budget.

Regards,

RTROSE
post #1061 of 1242
Thread Starter 
Quote:
Originally Posted by RTROSE View Post

Excellent. I really want to hear more about what you think when you have a little more time watching your new PJ. I was very close to getting the 5010, but I saved a few bucks so I could put that towards my speaker budget.

Regards,

RTROSE

The 8350 is a great value. No doubt about it. I made all of my speakers for about $400, so I could justify splurging a bit. I really wanted great blacks and 3d. The 3d on this 5010 has zero ghosting that I can see and the blacks are pretty darn good....and I'm not using the iris. I haven't calibrated it, so I'm not sure if I can improve on it. I'm not sure I like the PS3 glasses since you can see reflections of what is behind you which is distracting to say the least. I can probably make a shield to prevent that, I think. I bought them because they were cheap and I wanted enough for guests. I may get a couple of the Epsons for myself and my wife.

I also have not gotten 3d to work on my HTPC for blurays or gaming. I'm thinking the AMD A6 integrated graphics drivers are the issue. I researched the crap out of the 3d stuff and I still may not have gotten it to work. Luckily, the SBS 3d does work so I'm at least able to see something cool.
post #1062 of 1242
Thread Starter 
The in-laws were visiting this weekend and we watched Puss in Boots 3d last night. They both said that it looked awesome. I have to agree! I have a 135" diagonal 16:9, but zoom out to get another 12" or so for 2.4:1. The 5010 lights it up really well for that size screen and at 1.2 gain...and 3d! There were quite a few scenes were I was just enjoying the beauty of them. In the dark scenes, I didn't think I needed any more lumens and the contrast/black floor is really good. The colors are much, much richer than my old PJ. That is the biggest difference that I noticed. I started looking for ghosting and just could see any....then thought WHY am I doing that? Ha ha.

We sat on a couple of folding chairs and a couple of chairs from the family room. I am going to have to do something about that soon.
post #1063 of 1242
Thread Starter 
I know you guys are going to hate me, but I need to start on seating. It is more of a priority than the rotary, but I have the weekend to myself so maybe I can do some work on the rotary too?

I'm looking for a few things for seating:
1. comfort/infinite adjustability
2. unique/modern/contemporary style
3. easy build

Oh, and if you didn't remember, I'm building my seating! Infinite adjustability just means that it is similar to the powered recliners in that any seating angle is possible vs the 3 positions a manual seat will stay in. I was also looking at the "zero gravity" type seating. I was thinking this might be a way to go, but I've never sat in one. I'll try to find a place that has them. Any suggestions on that from out there??

The disadvantage of the zero gravity types is that your knees are higher (which may impede your view at extreme reclines) and your hip stays at a constant angle....or maybe they are not a big deal after all? I think this type of chair could be made pretty easily without a complicated mechanism.

My other thought was a reclining back and an ottoman for your legs. This would be easy to make a mechanism, but would likely require a motor for positioning.
post #1064 of 1242
Man you are a glutton for punishment. Building your own seats? You da man for sure. I'm sorry but I don't have any pearls of wisdom in this area. I will just read and watch, much like I did when all the math showed up.

Good luck from your now silent friend.

Regards,

RTROSE
post #1065 of 1242
I'm pretty sure jelloslug built his own seats. Check out his build thread. They turned out more like traditional black recliners but you could play with the design to make them more modern and contemporary.

EDIT: Here is a link to a thread jelloslug posted about his seat build. They are impressive to say the least.

http://www.avsforum.com/avs-vb/showthread.php?t=1328087
post #1066 of 1242
Good luck Andreas! I don't have the stomach for building my own seats but I'm sure impressed that you do! I'm sure they'll come out great!
post #1067 of 1242
Thread Starter 
I've been wanting to build some furniture for years, and was excited to make something for the theater since I started (before Jelloslug's thread). I have seen his thread. He did great work! I'm sure I will refer back to his thread at least a few times and shoot him a PM. I'm going to try for a simpler build if possible. I think I'm just going to have the fronts recline. The rear seats will be a glorified bench.

Here's a pic of what I had in mind...this would mean I don't need a motor to move the seat.

Now that I think about it, I might just bite the bullet and go with a powered version. It would be simpler and not much more expensive. I would need to get power to them, but that is not a huge deal.
post #1068 of 1242
If you are going to do it then go powered, why not? Oh, I forgot I was supposed to be silent on the matter. DOH!

Regards,

RTROSE
post #1069 of 1242
Thread Starter 
Quote:
Originally Posted by RTROSE View Post

If you are going to do it then go powered, why not? Oh, I forgot I was supposed to be silent on the matter. DOH!

I agree. It will cost maybe $10-20 more per chair and be less...finicky....I think that is the word I'm thinking of. If you look at my tremendous diagram, all that crap will be replaced with a nut and a screw. I was looking at ebay for a motor to turn the screw, but I think a cheap rechargeable drill (sans battery) will be a better route and the same money. I just happen to have an old one lying around so I can use it for the prototype.
post #1070 of 1242
Thread Starter 
Ok, so I didn't have last weekend free....I have so little free time. I did do a bit of work on a prototype recliner. I'm concentrating on the mechanicals, although the height of the chair seems good (and will be needed with my low ceilings.) Here it is next to the current seating.



Here is the current reclining mechanism. I was going to go with a cordless drill, but I think it might be too noisy. I will be trying out a couple of motors to see what I'll be using.


As you can see, I'm going for simplicity where I can. The only piece I had to manufacture was the nut on the screw. It has a hole through it and then two pieces of 1/4" metal rod welded into the holes. This allows the nut to pivot on the rods while the seat back actuating arm rotates through an arc.

I also put cushions on the chair and it is quite comfortable. I have to test out some spare memory foam that I have to see if I like the feel of that.

I am enjoying my new PJ. I moved my seating to 12 feet from the screen. I am not liking the weave that I can see from the screen material (Center Stage XD). For 2d movies, it is not that big a deal, but for 3d it is somewhat distracting as it adds a "layer" at the screen position. It makes your eyes work a bit harder. I have white spandex for my walls and I tried it as a screen material. I think it is slightly less gain, but much smoother. I'm thinking of putting it in front of my current screen. I'm up for suggestions for higher gain AT screen material!
post #1071 of 1242
Thread Starter 
I actually got a few things done on the theater this weekend. I put a threshold in for the door, trimmed the door and cut the door seals. I was going to cut the bottom auto door seal, but it is the wrong size. I'll need to contact Ted.

I also brought in an electrical circuit into the theater so I wouldn't have electrical cords coming in through the doorway (difficult to make the door seals work otherwise!)

I also ground off a few welds on the rotary frame so I could aligned a couple of pieces better for the driver mounts. I started on the welding, but will finish up after the baby wakes up (I need to "motivate" it a bit with a hammer.)

I decided that instead of many smaller frames on the wall, I'll be going to larger panels for a cleaner look and a bit less work. I also made an order for a couple of parts for the prototype chair that should be here in the next couple of days.
post #1072 of 1242
Interesting proof of concept, looks a little stiff to me, but hey I have back issues so the extra support would be greatly appreciated!

On the screen weave, is this something new with the 5010 or was it there with your older pj and you just sat further back and did not notice. I know when you are talking about moire with AT screens rotating the weave can lessen the appearance so I don't know if this is a similar situation or something completely different.

It would help I guess if I were more familiar with your screen material to provide some suggestions.

I think going with bigger frames is a good choice and makes perfect sense for sure. Easier, faster, and cheaper, those are very good things.

Regards,

RTROSE
post #1073 of 1242
Thread Starter 
The Epson 720 was more limited its resolution with my screen size and distance. I moved my chairs up with the new PJ since that is where they will be with the rear row. The Center Stage XD is a good screen (AT, 1.2 gain and neutral color), but it has texture that can be seen at 12 feet. I can see it further back than that. With 2d, it is not a huge issue as you will mostly only see it with very white scenes (and you have to be looking for it.) With 3d, it really bothers me especially at the closer viewing distance.

The chair looks a little stiff because it needs cushions. With the right cushions, it will be plenty comfortable. Sofa sleepers have a rigid seat, for example. I used the cushions from my other chairs as a test. The backs were perfect, but the seat bottom needed to be firmer so you don't bottom out onto the plywood underneath.
post #1074 of 1242
Thread Starter 
Finding a suitable motor for the chairs may be the tricky part! The small motor I had was both too weak and too noisy. I'm wondering if it might be better to use a drill as I was thinking before, but use some sound isolation on it. The two issues I see are mounting the drill and the threaded rod will need to go through the sound isolation.
post #1075 of 1242
hydraulic powered chair ??
post #1076 of 1242
Quote:
Originally Posted by HFGuy View Post

hydraulic powered chair ??


That's a thought, but all of the hydraulic's I've been around are much noisier than a simple electric motor drive assembly.

AM,

I'm clr on the cushions, did not think for a moment you would forget about those.

Regards,

RTROSE
post #1077 of 1242
The compressor and valves could be put outside the room, only the cylinder has to be in the room.
post #1078 of 1242
Quote:
Originally Posted by HFGuy View Post

The compressor and valves could be put outside the room, only the cylinder has to be in the room.


Very true.

Regards,

RTROSE
post #1079 of 1242
Quote:
Originally Posted by AndreasMergner View Post

I am enjoying my new PJ. I moved my seating to 12 feet from the screen. I am not liking the weave that I can see from the screen material (Center Stage XD).

Interesting - you must have much better eyes than me, I am also 12 feet from my Seymour AT screen, and can't see the weave. I'm using an RS20, don't know if that could also be different (fill factor?); and tilted the weave pattern on the frame (only about 10 degrees, due to screen size).
post #1080 of 1242
Thread Starter 
Quote:
Originally Posted by Brad Horstkotte View Post

Interesting - you must have much better eyes than me, I am also 12 feet from my Seymour AT screen, and can't see the weave. I'm using an RS20, don't know if that could also be different (fill factor?); and tilted the weave pattern on the frame (only about 10 degrees, due to screen size).

I have my PJ hooked up to my HTPC (on it right now), so I have bright white backgrounds to see it more easily. In movies, it is not very apparent except in very white scenes. In 3d, however, it is much more noticeable and bothersome. The weave looks like another cloudy layer at the screen. It makes my eyes bug out. I could live with the weave otherwise. I was seeing screen door with my 720 PJ. I don't think I'm seeing it with the new PJ. I think I have 20/15 eyesight....(last time I was checked, which was a few years ago).

Quote:


I'm clr on the cushions, did not think for a moment you would forget about those.

So, did I miss the joke? I hope not! Ha ha.. It is so hard to read people on the 'nets. If so, it is because I was concerned about the chairs being to hard. Why aren't all chairs made this way? Well, probably because they are slightly heavier and require more and better cushions. Regular chairs have more labor, but with jigs and repetition that is not a problem. For me, it makes sense to pay $20 more per chair for better cushions to save on labor.

Quote:


The compressor and valves could be put outside the room, only the cylinder has to be in the room.

I have to admit that this is a unique idea. It is pretty far from practical, but so is a bunch of what I'm doing. I have not messed with hydraulics before, but I would think it would be more expensive and noisier (even if the noise only woke up the baby upstairs instead of interrupting my movie.) Ha ha. I think using an electric motor is the way to go....you just have to find the right one.

I found these that I think would work...although maybe barely with both travel and force: Lift-Motor-Actuator-for-Pride-Mobility-Lift-Chairs

The price is about what I'm willing to pay, but I keep wondering about what happens if one breaks. I may or may not be able to source a replacement. With a cordless drill, it would be easy. I will do an experiment with some sound isolation over the next few days.
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