Announcement

Collapse
No announcement yet.

Sub speaker selection help.

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Sub speaker selection help.

    I am finally making head way on my install. All the components are being put into case. Now with the calculations i have done, there is not enough room for a 12 inch sub. So researching, they have 8 inch square speakers, which will fit perfect.

    What I want to know is does the speaker have to face a certain way? I am trying to go for a 7.1 surround sound setup and want movies to sound amazing. With music, I just want it to sound well balanced, meaning I want to hear everything clearly, not just boom boom boom.

    I notice on most installs the speaker is facing towards the left or the right. Would it affect sound to have it point up? The way my setup is, up is the only option. Also, with a sub box, is there any other area that has to be open, like to let air in and out?

    Any help would be appreciated.
    Nirwana Project, the Android/Win 7 hybrid system!

    1X Ainol Novo Flame Tab
    4X MK808b
    3x Perixx Touchpads
    3x 7 inch Screens
    1X 7 inch motorized Screen
    1x Win 7 PC

  • #2
    Originally posted by HiJackZX1 View Post
    I am finally making head way on my install. All the components are being put into case. Now with the calculations i have done, there is not enough room for a 12 inch sub. So researching, they have 8 inch square speakers, which will fit perfect.

    What I want to know is does the speaker have to face a certain way?

    I am trying to go for a 7.1 surround sound setup and want movies to sound amazing. With music, I just want it to sound well balanced, meaning I want to hear everything clearly, not just boom boom boom.

    I notice on most installs the speaker is facing to wards the left or the right. Would it affect sound to have it point up? The way my setup is, up is the only option. Also, with a sub box, is there any other area that has to be open, like to let air in and out?



    Any help would be appreciated.
    Speaker direction is referred to as the speaker being on axis or off axis and every speaker is different. Some sound great "off axis" (not pointed at the listener" such as a door installation; others almost have to be on axis to sound great.

    Most SQ installs have the front stage (usually the L & R front speakers) pointed towards the center dome light or a headrest (biased towards one front listener or the other). Most accomplish this by using the Q Logic kick panel install shells which move the door speaker down into the foot well and points them up and in. If you are going to this extreme, you will likely be running components which have a separate tweeter. Some like the sound of the these mounted down with the main driver, some like them mounted high in the sail panels. It varies by speaker, vehicle and listener preference. The best way to experiment with speaker location is to use a bath town bunched up in a ball and bury the back of the speaker in it on the front floor so you can move them around the angle the placement while listening. Use Velcro on the tweets to try different locations. BTW,if you go with the Q Logic lick panels, they will need some reinforcement, they are fairly light and the plastic doesn't sound great until you reinforce it a bit.

    Any multi channel setup in a vehicle is more for the experience of installing it and trying it out but honestly, a good processor with a phantom center channel will give you close to the same experience and maybe better. It depends if you are able to find a good location for the center channel speaker or have to settle for a dash top mount shooting at the windshield. Also, if the center channel speaker does not have similar characteristics to the others, it will sound off. There are a lot of variables.

    The sub box can be sealed or ported. Sealed does not require an open port for "the sound to come out". Sealed is the easiest to build, and can be smaller than ported. Most average subs will need anywhere from .8-1.5 cubic feet of air space to work properly in a sealed box.
    Last edited by PhilG; 10-01-2011, 02:35 PM. Reason: fixed grammer AFTER my coffee, wow, it was bad!
    My 2007 Ford F350 Work Log located HERE

    Comment


    • #3
      ^ what he said. + some:

      i had a chance years ago to demo a bunch of different manufacturers square subs, and i can say that i think that they all sounded poor, but kicker was the only one to pull it off the best.

      if you look at the design of kicker L-series subs, you'll see that they have extra material at each corner of the subs. they really do need that extra material for the sub to work correctly. most of the cheap knock-off's(i think lanzar makes one) don't have that extra material and the sound quality is very affected by it.

      but for clear bass, i think you are going the wrong direction--the kicker L-series subs, or any square sub for that matter are really more about raw output then finesse(my cvrs have a much cleaner sound then all of the L-series subs i have heard).
      My OLD 2001 Mitsubishi Eclipse GT:
      "The Project That Never Ended, until it did"


      next project? subaru brz
      carpc undecided

      Comment


      • #4
        My install has an actual center speaker. It will be located in the new center console I am making. I was going to put it in the dash top, but that created to many issues. As far as the 6 speakers in the doors and third row panels, all will be Coaxial, I just didnt want to worry about mounting the tweeters.

        So what you guys are saying is that I should go with round sub? That can work also. I just thought the square looked cooler, lol. Do they make one that can handle 400 watt RMS and do you think 400 watt RMS is enough for good bass, but not over kill bass.
        Nirwana Project, the Android/Win 7 hybrid system!

        1X Ainol Novo Flame Tab
        4X MK808b
        3x Perixx Touchpads
        3x 7 inch Screens
        1X 7 inch motorized Screen
        1x Win 7 PC

        Comment


        • #5
          yes, 400w rms should be fine. the amount of power you feel depends on how you set everything up.
          My OLD 2001 Mitsubishi Eclipse GT:
          "The Project That Never Ended, until it did"


          next project? subaru brz
          carpc undecided

          Comment


          • #6
            OK, then 400 rms will be my goal.
            Nirwana Project, the Android/Win 7 hybrid system!

            1X Ainol Novo Flame Tab
            4X MK808b
            3x Perixx Touchpads
            3x 7 inch Screens
            1X 7 inch motorized Screen
            1x Win 7 PC

            Comment


            • #7
              maybe should clarify a little-- you could setup a 6,000 watt amp+sub to sound like it is quieter then a 100w amp+sub. it is all in the was the settings are changed.

              personally, i would never go below 300w rms. i run 600w rms right now for that same reason. the extra power allows for better control over the sub, which does allow for a little more sound refinement.


              did you decide on a amp series yet?

              i have just recently upgraded to the alpine pdx series(f4 and m6), and they are working really good for me.
              My OLD 2001 Mitsubishi Eclipse GT:
              "The Project That Never Ended, until it did"


              next project? subaru brz
              carpc undecided

              Comment


              • #8
                Originally posted by soundman98 View Post
                maybe should clarify a little-- you could setup a 6,000 watt amp+sub to sound like it is quieter then a 100w amp+sub. it is all in the was the settings are changed.

                personally, i would never go below 300w rms. i run 600w rms right now for that same reason. the extra power allows for better control over the sub, which does allow for a little more sound refinement.


                did you decide on a amp series yet?

                i have just recently upgraded to the alpine pdx series(f4 and m6), and they are working really good for me.
                Im still back and fourth on the amps. All I know is that I lowered the RMS for the speakers from 100 to 80RMS so I can go with the Type S series speakers.

                Now I just had a weird idea, what about a bazooka for the bass. Those usually have the amps built in and I can stand it up?
                Nirwana Project, the Android/Win 7 hybrid system!

                1X Ainol Novo Flame Tab
                4X MK808b
                3x Perixx Touchpads
                3x 7 inch Screens
                1X 7 inch motorized Screen
                1x Win 7 PC

                Comment


                • #9
                  i've got a 8" one in my home theater-- in short, they stink(i got it for free and used a old pc-psu to power it--essentially a free 50w sub). if you can get them for less then $25-50, then they aren't a horrible deal, but you will still need to remind yourself of the purchase price while watching movies.. any explosions at any volume high enough to clearly hear the actors vocals will make it sound flatulent...

                  music isn't bad, but my old kicker comp 10"ers in a too-small box had better bass..

                  what about a shallow-mount sub in a low profile box?
                  My OLD 2001 Mitsubishi Eclipse GT:
                  "The Project That Never Ended, until it did"


                  next project? subaru brz
                  carpc undecided

                  Comment


                  • #10
                    Originally posted by soundman98 View Post
                    i've got a 8" one in my home theater-- in short, they stink(i got it for free and used a old pc-psu to power it--essentially a free 50w sub). if you can get them for less then $25-50, then they aren't a horrible deal, but you will still need to remind yourself of the purchase price while watching movies.. any explosions at any volume high enough to clearly hear the actors vocals will make it sound flatulent...

                    music isn't bad, but my old kicker comp 10"ers in a too-small box had better bass..

                    what about a shallow-mount sub in a low profile box?
                    Im going to take a picture of the unit installed and where everything is going. That way you can tell me what I should be going for. Basically I want the smallest sub I can go with, but at the same time I want it to be strong enough to not get drowned out.
                    Nirwana Project, the Android/Win 7 hybrid system!

                    1X Ainol Novo Flame Tab
                    4X MK808b
                    3x Perixx Touchpads
                    3x 7 inch Screens
                    1X 7 inch motorized Screen
                    1x Win 7 PC

                    Comment


                    • #11
                      i think i have a decent idea:



                      that area to the right is what is available for the amps and sub right?
                      My OLD 2001 Mitsubishi Eclipse GT:
                      "The Project That Never Ended, until it did"


                      next project? subaru brz
                      carpc undecided

                      Comment


                      • #12
                        Yup that it. I actually got the cabling tighter, so it will sit farther to the left. Here is what i want to do.
                        Attached Files
                        Nirwana Project, the Android/Win 7 hybrid system!

                        1X Ainol Novo Flame Tab
                        4X MK808b
                        3x Perixx Touchpads
                        3x 7 inch Screens
                        1X 7 inch motorized Screen
                        1x Win 7 PC

                        Comment


                        • #13
                          it might be best to nail down the amp series your going to use, and get some exact measurements of what is available for a sub, and then go from there.
                          My OLD 2001 Mitsubishi Eclipse GT:
                          "The Project That Never Ended, until it did"


                          next project? subaru brz
                          carpc undecided

                          Comment


                          • #14
                            Hello HijackZX1, If you are using a small sub in a large car you will need to load is so that it is facing rear aprox 6 to 8 inches from the rear hatch. Otherwise you will have a problem hearing it. If you face it side ways I would face it toward the Pass side from the drivers side panel and as close to the hatch as possible. You will not be able to calculate phasing so go with efficiency.

                            Comment


                            • #15
                              Thanks whip..... Soundman98, i remember you mentioning shallow mount subs. Are they any good? If I use one of those I can rearrange everything and have a perfect fit. Do they need a large sub box like a standard sub?
                              Nirwana Project, the Android/Win 7 hybrid system!

                              1X Ainol Novo Flame Tab
                              4X MK808b
                              3x Perixx Touchpads
                              3x 7 inch Screens
                              1X 7 inch motorized Screen
                              1x Win 7 PC

                              Comment

                              Working...
                              X