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  1. #1

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    Default Playing around with cardboard

    Here are some "just because I can" project speakers. The pyramid speakers are made from 500 pound test triple wall corrugate (aka cardboard). I fitted them with Vifa A10CC-07 (made for M&K and $5 from deepsurplus.com) two way drivers and Eminence Alpha 8 ($45 from Parts Express) woofers. Simple 3-way crossovers ($10 from Parts Express) and it is amazing how good they sound.


  2. #2

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    Air hole?
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben

  3. #3

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    Quote Originally Posted by ben62670 View Post
    Air hole?
    If you are referring to a port, there is no port. Although the bottom is open on these, so sitting on carpet is kind of a dampened air flow somewhat like polyfill. They have pretty decent bass as is.

  4. #4

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    Sorry. There is a thread by a guy who made a cardboard sub box with an "air hole". I am surprised you haven't seen it. It is up there with where to buy black paint. Are you just mocking a set of speakers you are going to build, or just messing around?
    Ben
    Please. Please contact me a ben62670 @ yahoo.com. Make sure to include who you are, and you are from Polk so I don't delete your email. Also I am now physically unable to work on any projects. If you need help let these guys know. There are many people who will help if you let them know where you are.
    Thanks
    Ben

  5. #5

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    that's pretty sweet.

  6. #6

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    Dude that is awesome.
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  7. #7

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    LMAO ben! That was the FIRST thing i thought when I saw the picture.
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  8. #8

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    Quote Originally Posted by JimAckley View Post
    LMAO ben! That was the FIRST thing i thought when I saw the picture.
    +1

    My speakers are getting too hot, so I had to put an air hole in the box.
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  9. #9

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    In case anyone is wondering what triple wall is:



    The speakers are hot glued together on an industrial level



    And finally: Crossover frequencies of 800 Hz and 5,000 Hz with 12 dB per octave roll-off.

  10. #10

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    My speakers are getting too hot, so I had to put an air hole in the box.
    Yea but the OP speakers aren't too hot but simply hot

    I too have to admit I was also thinking I was stepping into an "air hole" type thread
    Last edited by TECHNOKID; 03-10-2011 at 04:47 PM.

  11. #11

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    Now if someone could just tell me where to find some black paint to paint my cardboard box...
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  12. #12

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    Quote Originally Posted by JimAckley View Post
    Now if someone could just tell me where to find some black paint to paint my cardboard box...
    I cancelled my speakers and ordered the Polk boxes only

    I sure hope UPS doesn't scratch or dent them I wonder if Polk will double box my stereo 2 channels boxes
    Last edited by TECHNOKID; 03-10-2011 at 05:51 PM.

  13. #13

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    I know there's humor abound with this thread, but I do find the cardboard speaker idea very cool...and from a distance, rather nice looking.


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  14. #14

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    I wanna see a cardboard sub box...lol...
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    Love it...Looks like your havin' fun to me! Maybe we should have a contest to see who can come up with (or has) the oddest material/design cheapest speaker around.:tongue:
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  16. #16

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    Quote Originally Posted by slammin86 View Post
    I wanna see a cardboard sub box...lol...
    Complete WITH airhole (for heat dissipation obviously).


  17. #17

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    That's a nice looking glue gun but it looks awfully hard to get inside of the driver cutouts for detail work!

  18. #18

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    I have to say that is a pretty cool set of speakers. Nice job.

    Did you do this to try out ideas or was this the final version?

    I could see trying out an idea this way. As Cardboard is cheaper than wood although I have no clue how much triple ply cardboard goes for.
    Quote Originally Posted by Timothy Smith View Post
    WOW!

    That's like working your way through Katie Perry in order to get to Rosie O'Donnell.

  19. #19

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    Quote Originally Posted by dskip View Post
    complete with airhole (for heat dissipation obviously).

    lmao.
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  20. #20

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    Quote Originally Posted by Joe08867 View Post

    Name:  DIY PolkSub.jpg
Views: 5542
Size:  179.7 KB

    I have to say that is a pretty cool speaker. Nice job.

    Did you do this to try out ideas or was this the final version?

    I could see trying out an idea this way. As Cardboard is cheaper than wood.
    Humm :tongue:

  21. #21

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    I wonder if the idea behind only duct taping half the sub flange added to the overall musical coherence of air escaping from the rim and sounding like farting noises. Otherwise known a fl (flatulance level).

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    I'd like to see an "all duct tape" speaker system. Can we send this to mythbusters for further review??

  23. #23

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    Don't laugh too hard there are several high end auto (Cadillac, Lexus) makers who are using cardboard on five sides of their sub boxes. And not the triple wall stuff either
    Carl

  24. #24

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    Finally! A 2-channel system for the homeless.

  25. #25

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    Quote Originally Posted by TECHNOKID View Post
    Humm :tongue:
    I am kidding! I think the whole thing is silly. They are neat to look at but how could they sound really?
    Quote Originally Posted by Timothy Smith View Post
    WOW!

    That's like working your way through Katie Perry in order to get to Rosie O'Donnell.

  26. #26

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    Quote Originally Posted by Joe08867 View Post
    I am kidding! I think the whole thing is silly. They are neat to look at but how could they sound really?
    I think you would be surprised. These sound a lot better than they have any right too. No, they don't compare to my Martin Logan Prodigys or even the my big 3-way DIY horns, but then they were never intended to. They have decent bass for the small woofer, smooth mids and crisp highs. They would work well for a small room, office or dorm. All in all, more speaker than one could buy for $120 in parts, that they cost to build. IMHO YMMV

  27. #27

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    You should bring them to the Texas Polk Fest. I bet they would be a hot topic.
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  28. #28

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    Quote Originally Posted by Earthy View Post
    You should bring them to the Texas Polk Fest. I bet they would be a hot topic.
    Is it still on for April 16th?

  29. #29

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    Quote Originally Posted by DSkip View Post
    Complete WITH airhole (for heat dissipation obviously).

    Quote Originally Posted by Joe08867 View Post
    I am kidding! I think the whole thing is silly. They are neat to look at but how could they sound really?
    Joe, didn't you notice I tampered with your post to reflect only what I wanted for joking purpose (look at the face I gave you :tongue:) I know you would be joking just as Dskip would (or at least we'll give him the benifit of the doubt :tongue:).

    Quote Originally Posted by Wardsweb View Post
    I think you would be surprised. These sound a lot better than they have any right too. No, they don't compare to my Martin Logan Prodigys or even the my big 3-way DIY horns, but then they were never intended to. They have decent bass for the small woofer, smooth mids and crisp highs. They would work well for a small room, office or dorm. All in all, more speaker than one could buy for $120 in parts, that they cost to build. IMHO YMMV
    The joking was not around your speakers, just look at Dskip fine engineering Now, even with strong cardboard like you are showing us, I would believe the enclosure would start to vivrate at higher volume, right? They look really nice and as you pointed out, maybe for a computer rig at low level (heck can't be worse than many of the crap that is sold for computers nowadays) however, I might be wrong but I would be scared to crank them up too loud (vibration and potentially chasing the speakers all over the room )

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    Quote Originally Posted by bkeane1259 View Post
    I'd like to see an "all duct tape" speaker system. Can we send this to mythbusters for further review??
    LOL.

    I saw a flaw in their 4' car subwoofer that some others should have pointed out while they were building it. It might have worked had they had a better linkage system!

    Duct tape encloser, No resonances...LOL
    Most people just listen to music and watch movies . I am glad to be a part of a select group that tries to take our auditory and visual senses to a higher level: we EXPERIENCE them.... GOT SDA?...GOT SUNFIRE? ...GOT Maggies?

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