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Speaker mounting

Discussion in 'Audio' started by taterblazer, Dec 3, 2001.

  1. taterblazer

    taterblazer 1/2 ton status

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    Will there be to much airspace for mounting speakers in the compartments to either side of the rear seat? That airspace is the lengh of the rear of the blazer. What is everyones experience witht this? Should I consider building small boxes or baffles behind the speakers? Thanks!
     
  2. big79209

    big79209 Registered Member

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    hey tater, what size speakers are you planing on using? i have an 85 blazer that i put speaker boxes along each side of the truck, box took up the width of the wheelwell? as far as too much space, it will all depend on what size speaker your planning on using.
     
  3. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Tater,

    For running 6x9s or some kind of other coaxial type speaker, that area is probably fine...the challenge will be trying to keep those side panels as sealed as possible to avoid "whistling" air from the back wave of the speaker. Any speaker that is normally designed to go into a door, has already accounted for the limited air space in it's design....so I wouldn't worry about that. If you are really worried, you could always put some polyfill stuffing behind the speaker to "fake out" a little extra air volume.....but I think that's excessive.

    I would NOT try to install any kind of sub into the factory side panels....They are too thin to really even support the weight of a decent sub, and they certainly are not rigid enough to keep from flexing and bulging as the subs play. If you want subs in that area....you'll have to build a box for them using at least 5/8" thick MDF...3/4" would be even better.


    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  4. taterblazer

    taterblazer 1/2 ton status

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    6.5's and tweets are going in the side panels. No sub or 6x9. Guess I'll put them in and see how they sound!
     
  5. 1986Blazer

    1986Blazer 1/2 ton status

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    Greg72

    I am in the process of designing the install for my 86 K5. I had the idea of installing my amps under the drivers seat and my crossover somewhere nearby. The speakers in the door will be custom pods made from fiberglass. Now my question is for the sub. Your response touched on some points I'd like to ask. I plan to install my sub (or subs) in the area where the side panels are located. I have my panels out and plan to use pine or similar wood to make a mounting surface for speakers and other stuff. Is there, anywhere, a sub box design that would fit in the bed wall area. Some custom design. Maybe something like the sub box off a bose home speaker system. Two small 6" sub with a great port design. I can design the box I just do not know the interior demisions required. I want to use a 10" sub in a ported enclosure - if this is possible. If not possible, I am looking for a design that will fit in the side bed wall and not protrude out any further than the edge of the wheelwell (I'd prefer it not to protrude any more than half way from the wall to the edge of the wheel well but I'll take what I can get). What is the minimum thickness of the wood used to make these types of enclosures.

    Too many questions, I am sure but any help is welcome. I figure if we can get the dimesions down, this type of enclosure would be a welcome disign for all K5'ers.

    Chris

    <a target="_blank" href=http://www.geocities.com/keywestk5/KeyWestK5.html>http://www.geocities.com/keywestk5/KeyWestK5.html</a>
    So I says to him, I said, "get your own monkey."
    1986 K5, 350 GM Crate, 700R4, NP208
     
  6. taterblazer

    taterblazer 1/2 ton status

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    I'm still researching how much airspace those 6.5's should have. Hard to find good information out there.
     
  7. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Hey Chris....!

    have you looked at my photo album yet? I have 10" ported subs in enclosures built into the side panels....much like what you are describing. If you haven't seen the pics, click on the URL in my .sig and go to the Stereo Install page. If those subs are similar to what you were imagining, then I can give you LOTS of information about how to do it!



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  8. 1986Blazer

    1986Blazer 1/2 ton status

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    I'll tell ya....either you are on a similar wavelength or someone put you on this site for a reason. I have a basic design that is very similar but I have not been able to figure out the interior dimensions. Whatever info you can give will be accepted eagerly. If you want some payment for your plans, then let me know, or if you ever get to Key West, I can pay for the drinks all day long. Please let me know what you are willing to share.

    Chris

    <a target="_blank" href=http://www.geocities.com/keywestk5/KeyWestK5.html>http://www.geocities.com/keywestk5/KeyWestK5.html</a>
    So I says to him, I said, "get your own monkey."
    1986 K5, 350 GM Crate, 700R4, NP208
     
  9. Greg72

    Greg72 "Might As Well..." Staff Member Super Moderator

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    Alright, let's start with the basics....have you selected a subwoofer that you like yet? That's Step 1...once you know what brand &amp; model you want, we'll need to get the specs for what kind of volume the cabinet needs to be to make the speaker happy.

    Mine "netted" out to about 0.92 Cu Ft each.... That was pretty good for the JL Audio 10W3's that I used. Ideally, I'd have loved to eek-out 1.5 CU Ft per box, but I didn't want them to "encroach" on the interior that much.....it sounds like you have similar "aesthetic requirements" also.

    Don't I remember you are "Mr. Fiberglass Expert" too? That's good for you, because if you are willing to work with fiberglass, you could really maximize your cabinet volumes by following all the irregular shapes on the inner bed walls....

    Let me know what speaker you've selected and we can go from there. Also, if you can post pics of those spots in your truck where the cabinets will go, I can compare them to what my own truck looks like....I have a feeling they are VERY similar despite their age difference! [​IMG]



    -Greg72

    '72 K5 Blazer - 427BB/TH350/NP205/6" Lift/35x12.50's
    <font color=blue>See it here: </font color=blue><a target="_blank" href=http://coloradok5.com/gallery/albun38>http://coloradok5.com/gallery/albun38</a>
     
  10. 1986Blazer

    1986Blazer 1/2 ton status

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    OK, the sub I am planning to use is a 8" JBL -- I may go to two JBL's but for now I just want to use one. The bass it produces is great for the music I listen to (Boston, Metallica, Country, Buffett -- No rap). I am not looking for teeth jarring bass. As far as fiberglass goes....Once I make one of the wood boxes, I will look it over to see if I can make a fiberglass version to sell to the masses. I'll tell you what. If the math you use for the interior volume of these boxes is correct and the fiberglass version can be done, we can get together and sell these things. The fiberglass version will be much lighter and it can be made in different colors. I figure the cost for a fiberglass version to be about $140-$175. It would involve me making a mold of an existing box -- which may be easy or difficult based on the final size of the box you have designed. Then, once the mold is created, I can start making boxes. I figure the glass box would have to be about 1/4" thick. The edges of the box would probably have to be rounded, square corners are hard to use in a mold. The materials would be polyester resin (fairly cheap) and the glass buildup would be with basic woven cloth. Regardless, I will try to make mine out of fiberglass at a later date. So...give me the dimensions for a 8" sub and I'll see if I can figure it out.

    Thanks for your help.

    Chris

    <a target="_blank" href=http://www.geocities.com/keywestk5/KeyWestK5.html>http://www.geocities.com/keywestk5/KeyWestK5.html</a>
    So I says to him, I said, "get your own monkey."
    1986 K5, 350 GM Crate, 700R4, NP208
     

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