Anyone ever try concrete inside their subwoofer box
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Gold Member Username: InsearchofbassPost Number: 7623 Registered: Jun-04 | I have a 6.5 tangband sub I thought about trying it with on my spl meter after I test it without it in another box to see if I get more spl using the concrete....and wondered if anyone else tried this lol |
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Gold Member Username: ShortysetniesRock Vegas, NC US Post Number: 1746 Registered: Mar-06 | never even heard about this? What exactly do you mean? |
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Gold Member Username: InsearchofbassPost Number: 7624 Registered: Jun-04 | I want to concrete the entire inside of my subwoofer box walls....im thinking this may increase spl and possibly change the sound of the box as well |
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Silver Member Username: Surferdude9371Admiting your an a$$ho... Post Number: 491 Registered: Mar-07 | sounds CRAZY enough to work let us know the results.... |
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Platinum Member Username: Rovin4 10 Pioneer... Post Number: 12882 Registered: Jul-05 | would like to see that done since once i double wall a box with 2) 3\4 mdf & man was it HEAVY ! ...i soon realised what a pain it would be to move so i quickly disassembled it\cut it up .... |
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Gold Member Username: InsearchofbassPost Number: 7626 Registered: Jun-04 | well this box is half a cubic foot so it shouldnt be too heavy....and p rick ill be sure to post the results if and when I do this |
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Platinum Member Username: BestmankindRD 1000.1D with SI MAG... Post Number: 17190 Registered: Oct-05 | try it out sean. i think it will be loud.....chad |
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Gold Member Username: InsearchofbassPost Number: 7627 Registered: Jun-04 | LOL ok Chad....I just might....sean |
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Platinum Member Username: BestmankindRD 1000.1D with SI MAG... Post Number: 17195 Registered: Oct-05 | just a thought sean. wouldn't fiberglass also be tough enough so it won't flex? also since the box is very small, i doubt putting concrete would help much. i assume you want to try concrete cause it won't flex........chad |
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Gold Member Username: InsearchofbassPost Number: 7630 Registered: Jun-04 | well the box vibrates a little now and so does my 1.15 cube diyma 12 box and I was thinking concrete would eliminate this problem....but I also wanna see what it does to the sound of the box as well as get results for boxes for straight spl use.....sean |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5164 Registered: Apr-06 | yea i have used concrete check out ma ride.  |
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Gold Member Username: InsearchofbassPost Number: 7633 Registered: Jun-04 | did you hit 150 db with it yet lol....sean |
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Gold Member Username: InsearchofbassPost Number: 7634 Registered: Jun-04 | seriously though what do you think driving...sean |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5166 Registered: Apr-06 | i hit 150 on drive by with those JLs man....and the meter was placed 50 ft away!!!!lol....david  |
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Gold Member Username: Th3pwn3rPost Number:... Post Number: 6581 Registered: Jul-06 | I don't think it will produce results. If your current box isn't flexing and doesn't leak any air I can't see any form of benefit. |
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Gold Member Username: InsearchofbassPost Number: 7635 Registered: Jun-04 | ok Rob but out of curiousity I still might try it...if it only changes the sound its worth it |
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Gold Member Username: JtownTeam Revolution, Texas Post Number: 1778 Registered: Mar-07 | how thick are you talking about concreting it? you would be surprised how much it will way. |
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Platinum Member Username: BestmankindRD 1000.1D with SI MAG... Post Number: 17207 Registered: Oct-05 | sean i think you should think more about doing something to your car to make it louder. like deadening here and there. checking for leaks, etc........chad |
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Platinum Member Username: BestmankindRD 1000.1D with SI MAG... Post Number: 17208 Registered: Oct-05 | also find a most optimal place to place your sub. try to figure out where to place what so that most bass is present at where the mic is placed.......chad |
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Silver Member Username: CcdoggyPost Number: 189 Registered: Jul-06 | I work for a high end home theater installation company. Our reference speakers are made out of concrete and are pretty amazing to listen to. The concrete allows absolutely no vibration to escape and dampens the whole box. I would expect that it could help in score a bit (not much but a little if the box is no absolutly solid). However you would have to make it moderatly thick to be solid and compensated for volume taken up. |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 3953 Registered: Jan-06 | It also allows waves to bounce back and radiate through the cone causing coloration. There is more to just the concrete, usually lined with fiberglass matting of such. In the days we use to utilize ceramic tile, much lighter, thinner and easier to work with. Believe it or not ceramics will not flex, not in the sence we would know it. Seems some peeps compeating have learned this secret, but trust me it isn't a new idea, like polyfil. Polo..  |
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Platinum Member Username: Rovin4 10 Pioneer... Post Number: 12887 Registered: Jul-05 | for a 6.5" speaker i would think 1.5 even 2" of mdf should be plenty strong for it ... |
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Gold Member Username: InsearchofbassPost Number: 7636 Registered: Jun-04 | Well Joel here at my bro's house is telling me how heavy concrete really is so I wont be doing the concrete idea...but I like the ideas shared in this post and I appreciate your help guys in thinking it through |
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Silver Member Username: Yukhui4 15 AA Havocs, Memphis 4kw!! Post Number: 860 Registered: Jan-06 | Too little concrete wouldn't matter and probably crack and crumble. Too much, or even the right amount, would lower your box airspace, and probably not increase SPL. You don't need to use concrete, but if you must, go threaded rod and fiberglass. |
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Gold Member Username: DrivingrecklessDD 9515f, 148.2 db Mov... Post Number: 5169 Registered: Apr-06 | you can use concrete as deadening. fill your car doors with it. lol it wont flex. |
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Silver Member Username: TreezPost Number: 139 Registered: Aug-06 | damn...i was look forward to pictures... |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 3968 Registered: Jan-06 | Bracing would go a lot further than anything else as long as it didn't cause internal turbulance. threaded rod is ok for SPL boxes but is a poor idea for a daily. Just remember everything resonates and at the right frequency so does allthread, causing an audible ringing. In the past they use to make a double baffle leaving a 1/2" spacing in between each baffle, then fill it with either sand or lead shot... Polo. |
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Gold Member Username: InsearchofbassPost Number: 7637 Registered: Jun-04 | "Too much, or even the right amount, would lower your box airspace, and probably not increase SPL." I was planning on making the box the same airspace after the concrete of course |
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Gold Member Username: Van_manBoston South, MA Post Number: 3292 Registered: Mar-06 | I just put cement on my sub. It deffinatly plays diffrent now.     |
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Platinum Member Username: WingmanaliveA pic is worth 1000 posts!! Post Number: 12780 Registered: Jun-06 | What did you do Marc? Take the advice from that guy in home audio lol???!!! |
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Gold Member Username: InsearchofbassPost Number: 7673 Registered: Jun-04 | LOL always the wise guys.....I didnt say on the sub ... I said in the box...but ive moved on now |
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Platinum Member Username: WingmanaliveA pic is worth 1000 posts!! Post Number: 12786 Registered: Jun-06 | Naw Sean. There's a guy in home audio pushing his "tip" on improving the sound from speakers involving coating the parts in elements found in concrete. It's a kicker of a thread lolol. Enjoy. https://www.ecoustics.com/electronics/forum/home-audio/424105.html |
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Gold Member Username: ShortysetniesRock Vegas, NC US Post Number: 1816 Registered: Mar-06 | Marc, you seem to have a lot of time on your hands... hahaha. this, the vid for wheeler. funny stuff though |
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Silver Member Username: PhuktupbassheadMesa, Arizona United State... Post Number: 703 Registered: May-05 | All b,u,l,l,s,h,i,t aside... tell me more about the ceramic tile scenario. The tile must be inside the box, right? Give me a quick blueprint on a ceramic tile box, polo. You can't just tile the box... cuz it would eventually crack and break the bond wherever the thinset is forming a bond between tile and MDF. As a matter of fact, thinset won't even bond properly to MDF - period. There would need to be chicken wire and thick application of mud involved. ha ha you gotta explain this to me... because i've always wanted to tile or concrete the inside of my boxes... problem is... the vibration will make it break bond... then come loose... who knows what kind of mess that'll create. more info. more info. even so... i know treo lined the inside of a van with concrete once... broke some records... it WILL work, you guys... but HOW? i'm gonna try something out (top secret for now... lol) ... i'll let you guys know... in the mean time... more info please. (by the way, i'm a tile setter - and I have enough tile to supply everyone on ecoustics with a trial amount of ceramic for this little experiment) lol |
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Bronze Member Username: OreosTallahassee, Florida USA Post Number: 51 Registered: Jan-08 | if your set on experimenting with concrete you could layer inside the box with hardy board concrete siding they sell it in 4x8 sheets from home depot or lowes but i dont know if your going to get much out of the experiment |
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Bronze Member Username: OreosTallahassee, Florida USA Post Number: 52 Registered: Jan-08 | you could set the tiles with liguid nail and grout with caulk |
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Bronze Member Username: OreosTallahassee, Florida USA Post Number: 54 Registered: Jan-08 | actually that concrete backer board for till would work even better http://hometime.com/Howto/projects/drywall/drwl_10.htm |
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Gold Member Username: Van_manBoston South, MA Post Number: 3296 Registered: Mar-06 | Ive thought about that stuff too. I figure 1/2 mdf, 1/2 cement board, then tile mastic, (not thinset) and tile. Theres some other stuff out there too caled hardiboard, By mastic will take more flex then thinset. That would be one heavy box. heres a link to all types of material available. http://www.ontariotile.com/backerboard.html |
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Silver Member Username: PhuktupbassheadMesa, Arizona United State... Post Number: 705 Registered: May-05 | yeah... but the thing of it is: NO FLEX if it flexes enough to make it fall apart... well, then it was a waist of time in the first place because the point is the STOP the flex from occuring. 1/2" wonderboard is what I was thinking before... but I didn't want to tell you guys until I tried it. But, since cement board has already been mentioned... what the hell: 1. MDF 2. top of the line "flex" thinset mortar (homedepot: flex bond - green bag - $28 lowe's: ultra flex - white and orange bag - $23) 3. scratch coat the MDF with the thinset for a mechanical bond 4. use 1/4 x 1/4 inch notched trowel to spread bed of thinset over MDF 5. quickly install wonderboard of thinset bed and "mush" it in completely 6. even QUICKlier screw the wonderboard down to the MDF with backerboard screws (which have a varied thread that is needed for keeping a tight hold) 7. use extra screws near the seams and corners 8. use netting tape on ALL seems 9. mix more thinset and flat trowel it over all the netting tape you've applied to the seams of the box to make it all bond together to be the equivalent of a solid piece of concrete... all the way around. 10. let it cure for at least 24 hours here's what i'm wondering: 11? use large pieces of ceramic or porcelain tile to actually "tile" the box? |
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Gold Member Username: Van_manBoston South, MA Post Number: 3329 Registered: Mar-06 | Tile would give it some more mass. Just throwing it out there...but 3/4 mdf 1/2 wonderboard 1/2,- 3/4 mdf. light thinset inbetween layers to bond and screw with 1 and 5/8 or 1 and 3/4 screws. |
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Gold Member Username: InsearchofbassPost Number: 7721 Registered: Jun-04 | man I thought this thread would die but you guys arent going to give up on it are you |
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Platinum Member Username: WingmanaliveA pic is worth 1000 posts!! Post Number: 12914 Registered: Jun-06 | Without effort there is no success Sean..... |
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Platinum Member Username: Rovin4 10 Pioneer... Post Number: 12955 Registered: Jul-05 | just get a darn prefab box will ya ...... |
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Gold Member Username: InsearchofbassPost Number: 7722 Registered: Jun-04 | im siked I definately want to hear about this when its done.....I also would like to see a comparison spl wise too through the complete frequency range against a box done with just .75 mdf |
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Gold Member Username: Safe_crackerChicago, IL US Post Number: 4032 Registered: Jan-06 | Again for SPL concrete would work nice BUT the SQ will go out the window unless the inside is lined with a non-reflective material but even then said material would cause turbulance and hurt SPL... Polo.. |
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Silver Member Username: Wolf_houndPhoenix, AZ Post Number: 555 Registered: Sep-05 | lmao marc |
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Silver Member Username: KravenbloodOhio Hmmm Post Number: 370 Registered: Aug-05 | Meade used sheetrock on his civic build |
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Gold Member Username: CblazeRock island, Tenesssee Us Post Number: 1635 Registered: Sep-07 | ive seen somewhere.where somebody used 2 sheets of mdf for there box.they put concrete in between the sheets of mdf.cant remember where i seen this tho |
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