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My efforts

Discussion in 'Home Cinema Building DIY' started by Howard0000, Sep 8, 2003.

  1. Howard0000

    Howard0000
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    Just thought I'd share with you lot some images of my finished DIY subwoofer and my overall system.

    I bought the basic hexagonal box and driver from eBay and spent a couple of weekends getting rid of the imperfections in the woodwork, sealing every last gap in the wood, and painting it.
    The driver is a 12" car driver and is in excellent overall condition. This whole thing cost me about £30.

    About a week later I decided to add a port, so went and bought some drainpipe, calculated the port length and drilled the hole. I could immediately notice much less distortion, far deeper bass and less excursion to reach deeper levels.

    I'm extremely happy with this. Instead of spending loads of hard earned money on a manufactured sub, I spent around £30 and have one that sounds very close! It integrates with the rest of my system superbly and generally sounds fantastic. Those terribly overblown light-sabre sound effects in SW Episode 2 give it a good work out! :eek:

    So there you have it. Questions or comments? Don't hesitate to ask/mention.


    Pics of the sub:

    Here
    And here

    Pics of my system:

    Here
     
  2. Mylo

    Mylo
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    Very nice, what are you driving it with??
    The speaker looks like an SPLX which are pretty good budget subs.
     
  3. Howard0000

    Howard0000
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    Oh yeah I forgot to mention I'm driving it with a 100W Technics Integrated amp. You can see parts of it in the sub pictures.

    Yeah it's an SPLX speaker. They seem to be around eBay a lot for budget prices. This one certainly is good for a car sub.

    Oh and I bought a nice little gold plated banana/bare wire back connection plate thing from Maplin for the added professional look ;)
     
  4. Mylo

    Mylo
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    Good work my man.:smashin:
     
  5. ReTrO

    ReTrO
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    I love the box.

    Top marks.
     
  6. Mylo

    Mylo
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    Any idea where on ebay to find a box like that? Was it a private seller or one of the shops. You have got my disturbed DIY brain thinking about this.:cool:
     
  7. Howard0000

    Howard0000
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    It was a private seller. Just search for "subwoofer" or "subwoofer cabinet" and I'm sure you'll find something.

    I won the auction for £10, and he offered to deliver it for another £10. So £20. Which is still an incredible bargain. And the bits for finishing it, port, etc, cost about £10-£15.
     
  8. Exeter Man

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    Really nice piece of work, and an original box design too.

    Regards
     
  9. BigToe

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    Looks excellent - well done. Fantastic cost, too!

    Still waiting for my sub enclosure to get laquered, should be soon hopefully.... I need my bass back!
     
  10. Howard0000

    Howard0000
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    Thanks for the encouraging comments guys!!

    Right I had to put some more of the 2Metres of drainpipe I bought for the port to use, so I made some feet out of 3Inch long tubes of pipe, and now the sub sounds even better in downfiring mode.

    So I am currently waiting for the spraypaint to dry after painting the "feet" silver (gotta add some element of style!)
    Pics will follow.

    I also need to paint the now top of the sub (the bottom we didn't bother painting black originally cos you couldn't see it) so that'll be done next weekend.

    I can't stop fiddling with this damn thing!
     
  11. Howard0000

    Howard0000
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    Here are the pics then!
    [​IMG]

    [​IMG]

    [​IMG]

    You can see the nice silver feet, the fact that they're stuck on with blu-tac for now :D and the terrible un-painted top. But it looks so much more like a proper down-firing sub now :)

    All I need now is a name, anyone got any ideas? :smashin:
     
  12. ReTrO

    ReTrO
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    The Hex?

    It makes it almost sound evil.
     
  13. Howard0000

    Howard0000
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    Finally got some pictures of the absolute finished product, and a fairly amateurly done frequency response curve :p

    Sorry for the quality, I had to play with exposure because it's an entirely black object and didn't come out too well!! :p

    [​IMG]

    [​IMG]

    http://homepage.ntlworld.com/tony.canning/response.gif
    Click here for the response curve, it's a bit big to post here!


    Edit: Oops, put the same image twice :blush:
     
  14. Taz

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    :clap:

    V nice, well done :smashin:
     
  15. slingshot

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    Looks pretty good, had a quick look at your response chart which is a bit up and down, there's a lot of tail off from around 50Hz which is probably what you'd expect from a lot of car subs, since they expect to have the bottom end reinforced by a smaller space.

    What frequency did you tune the port too ? Just wondering if any of your peeks are due to tuning frequency.

    Might also be worth bunging up the port and see how it sounds as a sealed sub.

    Not a critiscm just commening on your frequency curve, very impressive for the money. Your on the top of a slippery slope of DIY building, I'm currently on version 5 of the SSS (Slingshot Shiva Sub) !
     
  16. Howard0000

    Howard0000
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    I tuned the port to 35Hz :)


    I've just had a play about with various parts of Die Another Day and Terminator 2 at almost reference level, and all I can say is wow! It sounds fantastic! :p
     
  17. Howard0000

    Howard0000
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    Bump to give some other people a chance to see this thread :)

    Played Gladiator (The beginning fight) in DTS, a little higher than reference level, and christ it's good. Just like being in the cinema, same volume levels, same stunning raw power, everything.

    Never thought a lower-end system like mine could sound so good :D
     
  18. Mylo

    Mylo
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    Have you tried the DTS soundtrack on Fast and the Furious. That kicks a bit.:)
     
  19. Howard0000

    Howard0000
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    That has insane amounts of bass that showed up just what my sub can handle! I love reference levels! :D
     
  20. Mylo

    Mylo
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    Good for blasting the neighbours when they step out of line.:devil: :D
     
  21. Howard0000

    Howard0000
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    Well my mum said she heard it fairly clearly in the garage, so god only knows what my next door neighbour can hear... :blush:
     
  22. Taz

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    No thats me trying out the new RTP-XR she heard :p

    :D ;)
     
  23. Howard0000

    Howard0000
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    Update! New driver!


    [​IMG]
    This is the bottom of the sub as it was...



    [​IMG]
    Can you guess which is the new one?


    [​IMG]
    And here she is in her new home :clap:


    Those drivers look a LOT smaller than they actually are in those photos... Should have put a CD on them or something for comparison... They're 12" in diameter.

    I got the new driver for free, all I had to do is pay postage, which is pretty cool!

    It's a proper home cinema sub driver, unlike the car sub I was using, which means it delves deeper in the frequency range. It goes down to about 23Hz if I remember correctly. Specifications are here if you wanna have a look.

    It doesn't sound a whole lot different, but I can immediately tell it goes deeper. It hits harder too!

    My mum mentioned after I had finished testing that the radiators downstairs in the living room were resonating... :eek: :eek:

    All in all, lovely jubly! Just gotta fix the driver in properly (it's held in with 2 screws at the moment :rolleyes: ) and make a few minor tweaks to the enclosure/positioning, but it's all good :D


    MASSIVE thanks to Dave (Regmarch) and his fantastic generosity for making all this possible... :clap: :hiya: :thumbsup:
     
  24. Howard0000

    Howard0000
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    Jesus H Christ... Star Wars Episode 2 has some stupidly overblown bass! There's SHED loads! Enough to feed a rather large army!! And I heard no distortion or bottoming out... Crikey...
     
  25. IronGiant

    IronGiant
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    Dear Howard's Mum,
    I must apologise for sending Howard a new speaker to play with ;)

    :thumbsup:

    Dave
     
  26. Mat-Moo

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    I wonder how different the sub works (sound) in the vented box as appose to a non vented box.
     
  27. Howard0000

    Howard0000
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    Dunno... But all I know is it sounds impressive in this box!

    Anyone familiar with the bit in Monster's Inc when Boo is in Sulley's house, she laughs, and the power blows? That bass is POSITIVELY stomach-wrenching...

    And when they "blow up" the sock in that bowl.... Ouch!
     
  28. IronGiant

    IronGiant
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    Thanks for the cheque Howard, it arrived this morning :thumbsup:

    Dave
     
  29. Howard0000

    Howard0000
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    Another tweak... I can't leave this thing alone can I?

    I've made the port longer (from 11CM to 25CM) to slightly enhance the very low frequencies... 20-30 Hz sounds are somewhat more noticeable now, and there's more "rumble".

    My dad's getting sick of watching the same noisy bits of my Terminator 2 DVD over and over again! :D
     
  30. Howard0000

    Howard0000
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    I've got a nice new Radio Shack analogue SPL meter on it's way, so I'll be able to do some extended measurements of response, power output, etc :)

    First thing I'll do is plot a response curve... The old one I did with my old driver is somewhat out of date :)
     

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