Jump to content

johnhay20hz

New Members
  • Content Count

    7
  • Joined

  • Last visited

Community Reputation

0 Neutral

About johnhay20hz

  • Rank
    Newbie

Profile Information

  • Gender
    Male
  • Location
    canada
  1. johnhay20hz

    room gain

    so a larger but not as long room will be louder than a smaller but longer room with the subwoofer in the corner all other things being equal? n by density i actually meant the subwoofer displacement is larger compared to the volume of the room
  2. johnhay20hz

    room gain

    well the air in the room is more compressed from the subwoofer because the volume of air is smaller, i would assume that would help spl isnt that what spl is at low frequency, a pressurized room by the sound wave?
  3. johnhay20hz

    room gain

    i have a question for all you experts out there i have always heard that room gain starts at the frequency which 1/2 its wavelength is the distance from the subwoofer to the farthest distance of the room of course materials that the room is made of, etc take place but for the example i am going to use lets say there is 0 leaks and really lower resonance of materials used (ex concrete) is room gain greater if the room is 10 feet high by 10 feet wide by 30 feet long and subwoofer placed in a corner (room gain starts at 19 hz i think) 3000 or if the room is 7 feet high by 5 feet wide by 35 feet long and subwoofer is placed in corner (room gain starts at 16hz i think) total volume of room is 1225 Now subwoofers are more efficient firing into a more dense air space (ex horns i believe relate here) and as the room size shrinks the ratio of subwoofer displacement to room increases, so i would think that there would be more spl increase in the smaller room even thou its longer but cabin gain says the larger room is louder am i comparing two different things here? sorry for long post but thank you for any who try and help
  4. johnhay20hz

    Playing Below Port Tune

    thank you,
  5. johnhay20hz

    Playing Below Port Tune

    yes, but any subwoofer can bottom out with too much power mostly im asking that if i want a infinite baffle set up can i build a high tuned ported box say 60 hz or whatever and have an infinite baffle roll off in the lower frequencies?
  6. johnhay20hz

    Playing Below Port Tune

    well how about a fi 15" x subwoofer tuned at 32 hz? btw i dont understand how this could be driver dependent, seems like a general thing
  7. johnhay20hz

    Playing Below Port Tune

    I got a question, everyone says that playing a subwoofer below the port tune will cause the subwoofer to be unloaded, and with too much watts it will "bottom out" is this unloading the subwoofer basically becoming a sealed box with a 4", 5",3" etc hole in it (loss of major amount of bass) , or the unloading making the subwoofer box be like an infinite baffle, decreasing power handling, but increasing efficiency? if it is infinite baffle, would it have a similar 6db/octave (i think this is close) roll off instead of a usual sealed boxes 12db/octave
×