InVeNtOr Posted March 29, 2007 Share Posted March 29, 2007 i am just curious, i have seen other dedicated ht rooms with this 6" area platform built. is there a reason for this or pure cosmetics? should i put one in my room and then put my chairs on a riser? Quote Link to comment Share on other sites More sharing options...
tenzip Posted March 29, 2007 Share Posted March 29, 2007 i am just curious, i have seen other dedicated ht rooms with this 6" area platform built. is there a reason for this or pure cosmetics? should i put one in my room and then put my chairs on a riser? So the folks sitting on seats on the riser can see over the heads of the people sitting in front of them more easily. [] You're just planning 1 row, right Inventor? No need in that case. Only other things I can think of are what Dr. Who was talking about, acoustic treatments, or for mounting some sonic transducers (shakers). Quote Link to comment Share on other sites More sharing options...
dkp Posted March 29, 2007 Author Share Posted March 29, 2007 InVeNtOR: tenzip is correct, I'm building the riser for the back row of seating. There will be five seats in the front row of the theater, two seats on the back left side and a sectional in the back right portion of the theater. Check out some of the earlier pics and you will see the chairs laid out, minus the sectional. However, there are a lot of home theaters that have a stage in the front of the theater. Maybe this is what you are thinking of? tenzip: That's a definite yes! for using acoustic treatments, although we'll most likely decide on those when we are tuning/measuring the room. However, I have no plans to add bass shakers/butt shakers to our theater. It's just my personal preference as I've never sat on one, but I just cannot imagine wanting them around for very long. I would think that they could get kind of annoying after the initial "cool!" factor wears off. Again, it's just my personal taste here, so no offense to anyone who loves them in their theater. I figure if I want my butt to shake there are lots of other ways to accomplish that!!! [<)][Z][8] Quote Link to comment Share on other sites More sharing options...
tenzip Posted March 29, 2007 Share Posted March 29, 2007 @dkp: Right, my reply was all to Inventor. I was just saying that the only other purposes I could think of for a seating riser were treatments and shakers. I wasn't suggesting shakers for you. Your room is coming together nicely. Wish I had the know-how to do my own room by myself, but fortunately I've got friends that can help. They have all the equipment/tools, too. [] Quote Link to comment Share on other sites More sharing options...
InVeNtOr Posted March 29, 2007 Share Posted March 29, 2007 alright. yeah i am only doing the 1 row. i understand what the riser is for, the stage is just for effects? (or show). Quote Link to comment Share on other sites More sharing options...
DrWho Posted March 29, 2007 Share Posted March 29, 2007 A helmholtz resonator is just any trapped volume of air with a single mouth for sound to enter. Generally speaking, the length of the trapped column of air determines the frequency at which it will operate. In other words, you could easily "drill a hole" (6" x 10"?) at one end of your riser inbetween a pair of studs and you'll have a helmholtz resonator tuned to whatever frequency corresponds to the length. You could even change the length of the hollow space by putting a little sideways piece further down the length - which if you're creative could be done with a jigsaw and sliding a board in (and of course generous application of liquid nails to make it air tight). Since you've got a lot of long trapped spaces, you have a lot of flexibility with addressing a lot of different frequencies. At the mouth you could do something like a fancy metal vent cover that people can walk on, or whatever fits your decor. As you near the completion of your room you'll be able to better tell if your stage is the source of any resonating that you hear (which you mentioned being uncertain about in a PM). But if you feel the need to stomp pretty hard to get any kind of resonance, then you've nothing to worry about. Just think about how high the SPL (sound pressure level) would need to be to match the pressure of your stomping...If you're listening that loud, then you've got bigger issues to worry about [] Quote Link to comment Share on other sites More sharing options...
dkp Posted March 29, 2007 Author Share Posted March 29, 2007 Thanks for the explanation, DrWho. This project has surely been one of the most educational things that I've done! I'm thinking that there would be a bit of an issue in using the riser as a helmholtz resonator, though, as there is a small airgap between the bottom of the centers of the joists and the concrete floor. There is a floor drain under the left portion (from sitting position) of the riser which means that the concrete is somewhat sloped underneath. I'm guessing that this would make the use of the riser just about useless since we wouldn't be able to trap anything with the bleeding of sound under each joist? -David Quote Link to comment Share on other sites More sharing options...
DrWho Posted March 29, 2007 Share Posted March 29, 2007 How big are the airgaps? They would still work to an extent, but trying to calculate the length to make them would become impossible - leaving it only to measurements, but I doubt you wanna start cutting up the floor to find out where it might be effective at...[] I'm trying to think of alternate ideas....perhaps cut some circular holes in the front of the riser and install sonotube to length? Yea I know, crazyiness - lol. Quote Link to comment Share on other sites More sharing options...
dkp Posted March 29, 2007 Author Share Posted March 29, 2007 Just remember this, Mike: If you get to say what you'd like on your pizza, you may get part of the bill. In other words, as you consider alternatives for destroying this fine riser of mine, you may find yourself with hammer in hand!!! Heck, maybe we could even tunnel under the house, pour some concrete and use the riser as the mouth of a subwoofer? lol I'm just kidding you, please feel free to add any suggestions you think appropriate! lol I would say that there are airgaps of 1/4" to 3/8" in a few select areas surrounding the drain. There is absolutely no give in the floor, and those spots are not spread all over under the riser. If you look at the pic of me kneeling down and securing the osb to the joists, the drain would be located to my immediate left, about halfway back (4 feet). The slope probably extends to the left, or behind me in the pic, about 4 feet or so, which would leave most of the left side of the riser available. As I recall, there are not many gaps on that side-I'm sure the floor is not totally level though. I almost used that "great stuff" spray-on foaming insullation for the bottom of the riser, but didn't think I was going to need it... -David Quote Link to comment Share on other sites More sharing options...
tenzip Posted March 29, 2007 Share Posted March 29, 2007 Is the riser secured down, or is it just laying there? If it's not secured, you could lift it up, nail/screw/glue sheets of plywood to the bottom to seal it up, then put it back down. If you're worried about water underneath, you could put some 1x plastic lumber underneath for "legs". And no, I'm not going to come up and help, I'd just cut myself with a hammer. [] Quote Link to comment Share on other sites More sharing options...
dkp Posted March 29, 2007 Author Share Posted March 29, 2007 The riser is not secured to the floor, but it is to the three walls it is touching. C'mon up, I've got some real dull hammers that you could use! [] Quote Link to comment Share on other sites More sharing options...
InVeNtOr Posted March 30, 2007 Share Posted March 30, 2007 And no, I'm not going to come up and help, I'd just cut myself with a hammer. [] i like that, cut myself with a hammer.....thats a good one. Quote Link to comment Share on other sites More sharing options...
formica Posted April 3, 2007 Share Posted April 3, 2007 Heck, maybe we could even tunnel under the house, pour some concrete and use the riser as the mouth of a subwoofer? I like your thinking... i'll do the design if you do the construction.... [] Quote Link to comment Share on other sites More sharing options...
picky Posted April 5, 2007 Share Posted April 5, 2007 Well, there goes the WAF: right out the window! [] [] Quote Link to comment Share on other sites More sharing options...
DrWho Posted April 5, 2007 Share Posted April 5, 2007 Well, there goes the WAF: right out the window! [] [] Well you could install a kitchen in the horn - and probably a washer and dryer too... [] (good thing I'm not married yet, eh? lol *runs for cover*) Quote Link to comment Share on other sites More sharing options...
dkp Posted April 6, 2007 Author Share Posted April 6, 2007 DrWho-I'm thinking that you need to start DJ'ing for wedding parties. You might meet the future MrsWho there, if you play your cards right... -David Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Trey Cannon Posted April 6, 2007 Klipsch Employees Share Posted April 6, 2007 That boy needs a job not a wife....... Quote Link to comment Share on other sites More sharing options...
IndyKlipschFan Posted April 6, 2007 Share Posted April 6, 2007 But Trey... Yours seemed to straighten you out good! Quote Link to comment Share on other sites More sharing options...
dkp Posted April 6, 2007 Author Share Posted April 6, 2007 That boy needs a job not a wife....... I wonder where the young fella would like to work?................[8-|][] Quote Link to comment Share on other sites More sharing options...
dkp Posted April 6, 2007 Author Share Posted April 6, 2007 By the way, I am really starting to despise drywall mudding/sanding. I kinda feel like the private in the Army who has to dig a hole only to fill it in once it's been dug... [:@] Quote Link to comment Share on other sites More sharing options...
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