Subwoofer: Facing Down or Up?

Discussion in 'Audio, Video & Gadget Tech' started by The Heater, Mar 20, 2012.

  1. The Heater

    The Heater New Member

    Hello, all:

    Has anyone had experience with both up and down facing subwoofer installation in an extended cab truck? Or just one of those positions?

    I have to decide if I will mount one or two sub woofers facing up or down. I have a current sealed box facing forward. Sounds great. 8 inch sub. But I want a larger unit, so it has to go up or down. The interior is all out of the rig, so now is the time to design something for a larger sub woofer or two.

    Any personal experience on these options as far as sound, vibration, etc. would be appreciated. :tuxout:


  2. Enkeiavalanche

    Enkeiavalanche Moderator

    Faceing down you might have a deeper sound almost like a Bandpass. So your 8 could sound like a 10. It's a smaller space for the air to move and fill up..
  3. lquattro04

    lquattro04 Member

    The closer a wall, floor, seat, etc. are to the face of the subwoofer, the louder it will be. This is due to the fact that the sound waves bounce off of the wall, or whatever it may be, and go throughout the cab in more than one direction. Right now I have a 12" Kicker L7 facing up in my crew cab, and unfortunately I was unaware of this fact before I had the custom box made. I had the sub previously in an S-10 extended cab facing towards the front right behind the drivers seat. From what I recall, the S-10 was nearly twice as loud as it is now. Now mind you the cab was smaller, but the sub would pound right behind my seat compared to my sub now which just goes towards open space.

    Hope this helps!
  4. SurrealOne

    SurrealOne Former Member

    Definitely down.
  5. mfleetwood

    mfleetwood Moderator

    x3 on facing down.
  6. zigger215

    zigger215 New Member

    In the 99-2007 trucks, up firing boxes will allow you to fit bigger subs (deeper), down firing has always seemed to sound better to me.
  7. reggiecab2000

    reggiecab2000 Member

    down fire for sure!
  8. Cheez

    Cheez Member

    I've had both up and down in my 2004 extended cab. I prefer the down firing much more than the up firing. The only rattle problems I've had with the down fire is the spare tire tools. Rearranged them a bit and that problem went away. If you want to go bigger, a 12" downfire is about all you'll fit. 10" is a nicer fit but my 12" still hides itself under the seat nicely.
  9. The Heater

    The Heater New Member

    Since you have to have a lip on the side where the woofer is mounted to allow for cone excursion, when pointing it down are you leaving one or two sides with no lip to allow air to move?
  10. Cheez

    Cheez Member

    When I built my box I left both sides open. It's pushed up against the back cab so it may as well just have only one side open.
  11. The Heater

    The Heater New Member

    So far it sounds overwhelmingly unanimous to point it down.

    Does not sound like anyone has had a major issue with vibration noise in pointing it down.
  12. mfleetwood

    mfleetwood Moderator

    No problems at all....I am extremely happy with the downfire and its performance. Here is a link that contains a ton of information about one type of downfire box and has some really good pics. This particular company makes a box for both one and two woofers (in case you're still on the fence about how many). For space reasons, I have the one woofer box with a 10". It hits great and still leaves me a decent amount of room.
    Last edited: Mar 21, 2012
  13. The Heater

    The Heater New Member

    Hi, Mfleetwood:

    Thank you for that link. I looked up what they sell for my truck.

    The issue with that box is that I am installing a Kicker S10C Solobaric subwoofer (probably from around 2000-01) that requires a box volume of not more than 0.66 cu. ft. and that box is 0.86 cu. ft. If I power it with one of my U.S. made Orion HCCA 250 (G2) amps or another higher power amplifier, they recommend reducing the volume further. I have a custom designed box for an 8 inch Solobaric that has been in the truck and has worked real well over the years. I may or may not install that one on the other side.

    I think I will have to design and build my own box. I would rather just buy one to save time, but I don't want to have to try to modify what they made to get the correct volume. I may as well build one myself.
  14. mfleetwood

    mfleetwood Moderator

    They don't seem terribly difficult to build, especially if you have some pics to use for guidance as to the shape, port size, location(s) etc. That's pretty cool you know your speaker specs....many just install and go. I'm definitely looking forward to "hearing" how it turns out.
  15. zigger215

    zigger215 New Member

    Building is simple. Carpeting throws people off but there are plenty of tricks to do that correctly, remember to use wood glue and air nail the box together, much stronger then screws because MDF will fall apart with screws.
  16. zigger215

    zigger215 New Member

    photo 3.jpg This is picture of part of my current setup, im competing in MECA comps as well as IASCA comps with this setup, this is taken without the suede trim plates i made for the back wall (basically everything is exposed without this trimout), the upfiring sounds very nice but is more suscebtible to physical damage. I personally have never noticed a sound difference but all of our ears work much different so my experience is my own.

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