Computer Subwoofer Project

VR3
VR3 Posts: 28,775
edited December 2004 in Speakers
http://www.eandr.biz/Vr3_Home_Theatre_Projects_Compu_Sub.html

Either am going to do......

2 6.5" woofers, 10" PR

or

4 6.5" Woofers, 10" PR

Dunno, and will have 120 watt plate amp...

dum dum dum
- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • gatemplin
    gatemplin Posts: 1,595
    edited November 2004
    What is the driver budget? An Adire Koda 8 has a ton of displacement and a low Vas and Fs. One good driver may end up being not much more than multiple cheap drivers and PRs. Check out this driver aswell: http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=264-832
    Graham
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    My good buddy Russ is hooking me up with drivers! I like the overall design of this, it is different...will be interesting to see how it will perform...

    We were originally going to go with a single Dayton 10"...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    Alright...

    2 6.5" Woofers
    1 10" Passive Radiator
    1 120 Watt Subwoofer Plate Amp

    1" Thick Wood Construction
    Tons of Screws, Lots Of Glue, Tons Of Caulk
    1 1/4" Thick Top and Bottom Caps

    Enclosure is axproimately 18.5" Wide, 20.5" Tall

    Plan to bring er home friday! Pics come soon!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    DUM DUM DUM

    FRONT
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    Side 1
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    DUM DUM DUM DUM

    Side 2!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • audiobliss
    audiobliss Posts: 12,518
    edited November 2004
    sweet, Sid; when ya gonna put guts in it and paint it?
    George Grand wrote: »
    Jstas wrote: »
    Simple question. If you had a cool million bucks, what would you do with it?
    Wonder WTF happened to the rest of my money.
    In Use
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    Eh...

    Might paint it in the next few days...

    But I dont want to wrap it in cloth till I get the drivers to make sure they fit, etc - kinda hard to trim something up that is cloth! ;)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • kingtut
    kingtut Posts: 813
    edited November 2004
    Trey is getting very good at making speaker cabinets for such a short time. Good job!
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    Thank you sir!
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • jcaut
    jcaut Posts: 1,849
    edited November 2004
    Yep. Looks good. The Black Lab project was very nice too, BTW.

    I think you're better at building cabinets than I am. I need a table saw, since I don't think I could cut a straight line to save my life!
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    Hehe...

    Thanks...

    I personally am not THAT great on a tablesaw - well depends on the overal size of the wood. That subwoofer went through ALOT of sanding considering it is 16 pieces of wood joined together! :D
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Mazeroth
    Mazeroth Posts: 1,585
    edited November 2004
    2.5mm xmax on those drivers. Not sure how this one's going to work out but hopefully it slams! :D
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  • jcaut
    jcaut Posts: 1,849
    edited November 2004
    Slams!! As in the voice coil bobbin hitting the bottom of the gap?

    Heh heh.... J/K:D

    I think it's an interesting project. Finding out what will happen is half the fun.
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    Who knows?

    The PR has 20 MM PTP ;)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    hmm
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • RuSsMaN
    RuSsMaN Posts: 17,986
    edited November 2004
    Don't need a high xmax on the active drivers, this one's 'fluid coupled' to a passive radiator.

    Cheers,
    Russ
    Check your lips at the door woman. Shake your hips like battleships. Yeah, all the white girls trip when I sing at Sunday service.
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    Thats a first time for me term...

    What does Fluid Coupled mean??
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • jcaut
    jcaut Posts: 1,849
    edited November 2004
    Since air is trapped inside the enclosure, movement of the cones of the active drivers is going to cause movement of the PR. They're coupled. The PR damps the motion of the active driver cones. A port does much the same thing, AT the resonance frequency, but since air is not actually trapped in the enclosure, there's less control overall. The damping property is only effective at the port resonance frequency, and is also affected by things like air velocity in the port. A PR system is nice because it gives you most of the same benefits of a ported system without most of the drawbacks. That may not be the best explanation, but it's 12:00AM and I'm half asleep...

    How are the two active drivers going to be wired? Dual coils in series, then the two drivers in parallel? I don't think you'll run into excursion problems, as long as you tune the PR properly and don't get crazy with the bass boost.. I'm anxious to hear your impression of how it sounds.

    Jason

    And another thing, Xmax and Xmech are not always the same thing. A lot of drivers can safely exceed their Xmax by a couple of mm.
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  • kingtut
    kingtut Posts: 813
    edited November 2004
    Trey, did you forget to put newspaper or some kind of layer underneath the speaker cabinet when you pain it? How are you going to clean up the pain on the garage floor?
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  • VR3
    VR3 Posts: 28,775
    edited November 2004
    One day, some day soon...

    I will borrow someones pressure washer and clean it along with the driveway (which has never been pressure washed)

    Our garage is sealed off and is pretty much a mess either way, so it dosnt really matter, Mom dosnt care...

    I made her a gate the other day for the porch on the garage, dosnt look purdy, but it works :)
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • VR3
    VR3 Posts: 28,775
    edited December 2004
    I just cut the last 2 holes for my subwoofer project...

    Amazingly - these cuts are much more accurate than my first 2 cuts - maybe because this is the 5th and 6th time I have cut this dimension...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Mazeroth
    Mazeroth Posts: 1,585
    edited December 2004
    Hurry up, lad! We need results!!! :D
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  • VR3
    VR3 Posts: 28,775
    edited December 2004
    AH phooey!

    I have my subwoofer amp coming...

    And Russ is shipping out the drivers and integrated here before long.... Will be in operation before long! Just gimmie some time! ;)

    By tommorow night I should have my mini line arrays finished, etc etc etc etc
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • audiobliss
    audiobliss Posts: 12,518
    edited December 2004
    Originally posted by Vr3MxStyler2k3
    By tommorow night I should have my mini line arrays finished, etc etc etc etc


    Sweet.....can't wait to see the finished product.....
    George Grand wrote: »
    Jstas wrote: »
    Simple question. If you had a cool million bucks, what would you do with it?
    Wonder WTF happened to the rest of my money.
    In Use
    PS3, Yamaha CDR-HD1300, Plex, Amazon Fire TV Gen 2
    Pioneer Elite VSX-52, Parasound HCA-1000A
    Klipsch RF-82ii, RC-62ii, RS-42ii, RW-10d
    Epson 8700UB
    In Storage
    [Home Audio]
    Rotel RCD-02, Yamaha KX-W900U, Sony ST-S500ES, Denon DP-7F
    Pro-Ject Phono Box MKII, Parasound P/HP-850, ASL Wave 20 monoblocks
    Klipsch RF-35, RB-51ii
    [Car Audio]
    Pioneer Premier DEH-P860MP, Memphis 16-MCA3004, Boston Acoustic RC520
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  • VR3
    VR3 Posts: 28,775
    edited December 2004
    HEHE!

    I forgot! I will have the pioneers redone as well by tommorow!

    DUM DUM DUM!!! Can't wait to get them looking good again... god that is going to be real hard... lol
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Mazeroth
    Mazeroth Posts: 1,585
    edited December 2004
    I've been busting my **** as well on my line arrays. Just need to cut the baffle holes, paint them, and mount the drivers. I'm hoping to have them done in the next 7 days. Everything is going great so far. I'm going to make a webpage with pictures of the whole construction etc. so you guys can check them out.
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  • VR3
    VR3 Posts: 28,775
    edited December 2004
    Keep us updated! (Just not in my thread! ;))
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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  • Mjr7531
    Mjr7531 Posts: 856
    edited December 2004
    It's funny how DIY looks so easy until you do it. I cut one of my caps too short and now I have to make do with it.:( But that's half the fun of DIY, making it! :) BTW, the NSBs went on sale again...
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  • VR3
    VR3 Posts: 28,775
    edited December 2004
    I am not buying anymore of those bloody FR drivers...

    I am in the process of painting the mounting frame black because its fugly...

    And i hear ya on the two short - etc, thats why I wrap my stuff in cloth with caps, much much easier...

    DIY is da shiznit...
    - Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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