Closed Thread
Results 1 to 6 of 6

Reload Thread: Cone area vs motor force

  1. #1
    audiom3's Avatar
    audiom3 is offline Senior VIP Member



    Join Date
    Feb 2007
    Location
    Gainesville,FL
    Posts
    190
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Cone area vs motor force

    Ok so I was thinking yesterday about this- If you have one sub and it has 100in^2 of cone area and then you have 2 subs that also(hypothetically) have 100in^2 of cone area shouldn't the 2 subs be louder given that all variables are the same (wattage and box design etc). Also at what point is the added motor force of the additional sub overcome by the cone area of the fewer larger ones ex 2 15"s(353.25in^2) vs 3 12"s (339.12in^2). I am assuming that this is also dependent on the motor itself but I would think that there should be some general guidelines?????







  2. #2
    Electrodynamic's Avatar
    Electrodynamic is offline Knows nothing



    Join Date
    Jun 2003
    Location
    Mooresville, NC
    Age
    34
    Posts
    2,069
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    69 Post(s)

    Re: Cone area vs motor force

    Quote Originally Posted by audiom3 View Post
    Ok so I was thinking yesterday about this- If you have one sub and it has 100in^2 of cone area and then you have 2 subs that also(hypothetically) have 100in^2 of cone area shouldn't the 2 subs be louder given that all variables are the same (wattage and box design etc).
    Yes. With all other variables remaining constant, doubling your surface are yeilds you a 3 dB increase.

    Also at what point is the added motor force of the additional sub overcome by the cone area of the fewer larger ones ex 2 15"s(353.25in^2) vs 3 12"s (339.12in^2). I am assuming that this is also dependent on the motor itself but I would think that there should be some general guidelines?????
    Nope, not really. I wish it were that easy, but with there being more than one frequency possible it's hard to say that a higher motor force subwoofer will play louder than a lower BL subwoofer. As long as you've got enough force to reach the target cone movement per enclosure, frequency, and power level, anything else isn't necessary / won't do anything mind-blowing. Ever heard people complaining about Eclipse Ti's not performing well in small sealed enclosures? In that same size sealed enclosure a Brahama/Q/Mag/etc will play louder lower. The higher BL subwoofer actually performs poorer in that situation. Now change up the enclosures to a large ported enclosure and the Ti will shine. Yes motor force is a part of subwoofer design, but it alone does not dictate how the subwoofer will perform.



    Electrodynamic
    "On a long enough timeline, the survival rate of everyone drops to zero."
    Owner Stereo Integrity
    Co-owner Obsidian Car Audio
    Associate Sundown Audio
    Simon Eichenberger is my hero
    Power handling is not a power requirement! Don't install suckage!

  3. #3
    audiom3's Avatar
    audiom3 is offline Senior VIP Member

    Threadstarter


    Join Date
    Feb 2007
    Location
    Gainesville,FL
    Posts
    190
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Cone area vs motor force

    Yes. With all other variables remaining constant, doubling your surface are yeilds you a 3 dB increase.

    Yeah i knew that but what i was saying is if both smaller subs have a total of 100 sq in of surface area 50in^2 each so they equal the cone area of the larger sub

    Also I understand that it would be dependent on the box but if you gave each sub its recommended enclosure volume regardless of the number of subs would the motor force make a difference?




  4. #4
    MisterGrubbs's Avatar
    MisterGrubbs is offline Kinda Old School



    Join Date
    Jul 2005
    Location
    Newnan, Georgia
    Age
    28
    Posts
    5,413
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Cone area vs motor force

    So basically

    You're saying that IF the cone area of two 10's were the sam as a single 12, that the 10's should get louder?

    I think that's the question.



    Educational session for you retards of the forum:Use there when referring to a place, whether concrete or more abstract. No kove, I will not come over there. Use their to indicate possession. Members of this forum have lost their minds. Remember that they're is a contraction of the words they and are. They're all idiots!

    References(Some of them):SteveyHustle, PepsiFiend69, SubNoize05, BushJ311, Mrray13, Hintzyboy, dbubble, 528hz, Twisted_0912, RKPsk8er
    Ebay: 35+ 100% Feedback Paypal: 14+ Verified

  5. #5
    audiom3's Avatar
    audiom3 is offline Senior VIP Member

    Threadstarter


    Join Date
    Feb 2007
    Location
    Gainesville,FL
    Posts
    190
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    0 Post(s)

    Re: Cone area vs motor force

    You are correct i was wondering if this would be true there was more to it but if someone has the answer to that i can go from there




  6. #6
    Electrodynamic's Avatar
    Electrodynamic is offline Knows nothing



    Join Date
    Jun 2003
    Location
    Mooresville, NC
    Age
    34
    Posts
    2,069
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)
    Quoted
    69 Post(s)

    Re: Cone area vs motor force

    Depending on subwoofer placement you may or may not see an increase. If they're close together you can get a tad due to coupling effect.

    If two smaller subs had the equivalent Sd of single larger subwoofer, you're not gauranteed an increase in overall loudness just because there are two subwoofers.

    If you had an amplifier that did 500 watts into a 4 Ohm load and also did 500 watts into a 1 Ohm load and you had a dual 2 Ohm subwoofer you wouldn't see an increase in output just from the increase in BL when wired in series. Well...not enough to hear.



    Electrodynamic
    "On a long enough timeline, the survival rate of everyone drops to zero."
    Owner Stereo Integrity
    Co-owner Obsidian Car Audio
    Associate Sundown Audio
    Simon Eichenberger is my hero
    Power handling is not a power requirement! Don't install suckage!

Closed Thread

User Tag List

Posting Permissions

  • You may not post new threads
  • You may post replies
  • You may post attachments
  • You may edit your posts
1e2 Forum