Vent size for 15inch MTX 4000

Discussion in 'OT Technology' started by speedricer, Jan 9, 2004.

  1. speedricer

    speedricer Go SpeedRicer Gooooo

    Joined:
    Dec 12, 2003
    Messages:
    11,919
    Likes Received:
    0
    Location:
    pikecounty KY
    Ok on the paper that came with the subs. For the vent size for each 15 it says
    (2)4"x14"
    does this mean that it needs 2 4" round ports?
    because I want to make one rectangle shaped vent.
    Would I just make the vent like 4"x8" and make it 14" long?
    really need help with this.
    thanks

    casey
     
  2. 04

    04 Guest

    If MTX reccomends a port area equal to that of 2 4" ports, you will want a port cross sectional area of around 26 square inches. So make sure that the port you build has at least 26 square inches.
     
  3. speedricer

    speedricer Go SpeedRicer Gooooo

    Joined:
    Dec 12, 2003
    Messages:
    11,919
    Likes Received:
    0
    Location:
    pikecounty KY
    so a vent that is 4" tall and 6" wide is 24 square inches.
    then would I make if 14" long like it says in the papers that come with it? this is for a 3 cu ft vented enclosure.
     
  4. 04

    04 Guest

    Yes that will be fine. Also, a vent with that crossectional area that is 14" long is tuned to about 35hz.
     
  5. speedricer

    speedricer Go SpeedRicer Gooooo

    Joined:
    Dec 12, 2003
    Messages:
    11,919
    Likes Received:
    0
    Location:
    pikecounty KY
    will that be fine? 35hz?
    i think on the paper it said that was 45hz.
    but will that sound fine.
     
  6. 04

    04 Guest

    The enclosure's volume is measured for the internal airspace after all other displacements, right?

    If so, yes it should be 35hz. And that should be an ok tunring frequency too.
     
  7. speedricer

    speedricer Go SpeedRicer Gooooo

    Joined:
    Dec 12, 2003
    Messages:
    11,919
    Likes Received:
    0
    Location:
    pikecounty KY
    Yeah each will have 3 cu. ft. of air space. That's actual internal air space not the outside of the box.
     

Share This Page