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Thread: fibreglassing front console

  1. #1
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    fibreglassing front console

    Hi, im new here and this is my first fibreglass project. Ive found a few different sites with a lot of information for my fibreglassing needs. Im doing a centre console in my '88 chrysler dynasty with a 10" kenwood sub in it, maybe some gauges or possibly the amp if thats possible.. but probablly just the sub and maybe some gauges or something small to fill in the extra space on the console.
    I have heard that its better to mount the sub facing downwards into the console for this type of application. Is this neccasary because i would much rather like the look of the subs face directed towards me.
    Any helps, hints/tips, would be greatly appreciated. Thanks

  2. #2
    Maximum Bitrate GoHybrid's Avatar
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    the short answer is, it doesn't matter which way it faces. Most installs i see don't give a hoot about positioning beyond what looks cool. Usually the power levels far exceed what's necessary for good SQ as well.

    If you're really serious about the positioning of it though, you could figure out the wavelengths of the frequency range that you expect your sub to reproduce and compare that to the direction it's facing to try and estimate whether the reflections off the interior will be causing cancellations or reinforcements where you're listening.

    but then again... hardly anybody cares that much about that.

    one advantage i can think of for a downward firing sub is the crap factor... that is to say it can collect and collide with far less crap if it is not exposed.

    still a sub in the center console sounds like a novel idea. post pics once you get going!
    Et ipsa scientia potestas est.

    Worklog for my 2007 Civic Si ...f*** it...
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  3. #3
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    Subwoofer frequencies are non-directional, so it shouldn't matter which way it faces.
    Not sure why pointing it down would help, it may be as GoHybrid says

  4. #4
    FLAC
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    Downfiring loads the subwoofer output against something making it louder.

  5. #5
    Maximum Bitrate GoHybrid's Avatar
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    it's hard for me to believe that a driver moving air along a linear axis doesn't have at least some direction. It probably disperses much wider than a high frequency driver... Probably in something as small as a car it's essentially non-directional. I think "loading it against something" is probably creating the result of reflected waves reinforcing eachother... or also possible, resonating with some part of the car more effectively.
    Et ipsa scientia potestas est.

    Worklog for my 2007 Civic Si ...f*** it...
    Pictures of the Corolla (retired)here
    Need to make something? Here are a few ideas.

  6. #6
    Constant Bitrate
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    the lower the frequency of the sound wave the less "direction" it has. For example take your standard tweeter and notice when it gets rotated to face a different direction it does change the sounding of it. If you do this with a woofer it will have changes in how it sounds based on where its facing and your position in relationship to the speakers postition. Do this same experiment with a sub, and you will notice that while it might have a little change in sound, it sounds very close to the same each time.

    now as GoHybrid said, how its facing could cause waves to reinforce eachother or get the car to resonate better. As each car is different each "best" mounting spot for a speaker is going to be different. My suggestion is try it in different positions (facing you, away from you, facing floor, facing the top of the car, etc) and play the same song when its in each position. Listen to the whole song and note what sound YOU like the best, I would bring it to 2 possible options that sounded the best then do another round of tests. This will help you figure out what sounds "best" in your car and to you. As many have stated each car is different, along with each person has different tastes in how they want their music to sound (more bass, "warmer", more "shrill", etc).

    From what ive read/seen/heard for a sub, b/c of the frequencies it plays, direction dosnt matter as much as the enclsure its housed in. In open air, the sub will have limited "direction", your neighbors will complain just the same if its facing them or away (so will 2 or 3 houses down lol).

    just my .02

  7. #7
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    I would say face it down mainly because of the risk factor with the location and comfort. I don't know about you but I use my arm rest a lot. I certianly wouldn't want to give it up because there is a big sub there. If you want to be showy you could always finish the inside of the box real nice and put a thick plexi window on the top and light the inside of the box. Make sure to get a sub with a good looking backside. Same way you look for a girl! HAHA And maybe put a padded trim piece around the top so that you have comfort, securtiy, and the show factor.

  8. #8
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    Im done the skeleton work. Next is the fleecing part. Can someone give me a good link or explain how exactly to mount the fleecing and resin work. Also how much will it end up costing if the console is 20" long 12" wide and 9" high

  9. #9
    Maximum Bitrate GoHybrid's Avatar
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    first off... lets try to keep your project to one thread.

    Second... the cost will be strongly influenced by your fabrication methods. you can probably count on buying a gallon of resin... about $40, several yards of chopped strand mat at about $3-$4/yd. You ought to use some fiberglass reinforced filler so you don't have to deal with stress cracks when your sub is at work beating the snot out of it's enclosure... that's about $20-30 a can... if you're just doing carpet, you can get a roll of it at wallyworld for about $8... if you're doing paint... the sky is the limit.

    before you get started though, go visit the12volt.com. They have a fabrication section with a nice tutorial on applying FRP to a wood frame. There are many threads on that here too... so just be warned, you're getting into flame territory with questions like that.
    Et ipsa scientia potestas est.

    Worklog for my 2007 Civic Si ...f*** it...
    Pictures of the Corolla (retired)here
    Need to make something? Here are a few ideas.

  10. #10
    Constant Bitrate
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    use the forums search function.... its been posted before (i think its a sticky actually....)

    if not do a google search

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