My Sonosub design

Discussion in 'Archived Threads 2001-2004' started by Eduardo, Apr 18, 2002.

  1. Eduardo

    Eduardo Agent

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    Hello Everyone,

    After 2 months of reading forums and personal web sites of how to build speakers/subwoofer, I have decided to build my first subwoofer. I have learned a lot from the people from this site and I would like you to review my design. My subwoofer will be a sonosub with a single port and powered by Adire AVA250. The sonotube was donated by Jim Robbins.

    Volume: 144L

    Driver: 12" Shiva

    Port(D): 5"

    Port(L): 26"

    Tuned: 18 Htz

    Sonotube(OD): 18"

    Sonotube(L): 40.2"

    Room Dimensions: 24.8' X 13.6

    Please let me know of any ideas or suggestions.

    Thanks in advance
     
  2. Eduardo

    Eduardo Agent

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    Has my thread been closed or locked? Mods Please help
     
  3. Patrick Sun

    Patrick Sun Moderator
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    No and No.

    The design looks pretty good on paper, so go forth and build you a sonosub!
     
  4. Andrew Low

    Andrew Low Extra

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    Unless you have already found the 5" diameter pipe for your port, you might reconsider. I couldn't locate any easily in my area.
    I ended up using a 4" port and it is fine -- I've never had any port noise problems, but I listen to things at a reasonable level. You could always move to a 6" port [​IMG]
    Your very close with your design to the Shiva whitepaper EBS alignment (this is good).
    The best advice I got when designing my sub, I'll pass on to you: "Just go build it".
    www.quux.net/roo/diy/sonosub
    Roo
     
  5. Patrick Sun

    Patrick Sun Moderator
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    The 6" port would require about 40" of length, so that's out of the question.

    If you go with a 4" port, I would recommend the flared variety (A Precision Port is around $14 plus shipping at places like Parts Express).
     
  6. Eduardo

    Eduardo Agent

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    Pat and Andrew,

    Thanks for the input and for having great websites. I use both of your sites as referencce.

    I was worried with the 4" port becuase of the airspeed in port. Checking ISD I will tuning the Sub to 17Htz this will keep the airspeed under 15 m/s.

    Port(D): 4"

    Port(L): 17.5"

    Tuned: 17.3 Htz

    Sonotube(OD): 18"

    Sonotube(L): 39"

    This project will be starting in the next 2 weeks.
     
  7. Eduardo

    Eduardo Agent

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    I'm looking for advice for my Sonosub design (AGAIN). I have cut the endcaps, made the base, cut the port hole, bought the port(flared) and hardware except the driver.

    Port(D): 4"

    Port(L): 17.5"

    Tuned: 16.7 Htz

    Sonotube(ID): 18"

    Sonotube(L): 39"

    According to to my calculation with the port and driver installed I should have an internal volume of 155 L. Is this volume OK?
     
  8. Dustin B

    Dustin B Producer

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    Yep, looks right to me, but LspCAD gives me 17.1hz or 17.5hz depending on if I used 17.5" to be the length that includes the flares or doesn't.
     

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