Volks AutosChris Nott
Results 1 to 14 of 14
  1. #1
    Toxik-Signal's Avatar
    Andy

    Status
    Offline
    Join Date
    Oct 2006
    Location
    Nottingham
    Posts
    357

    Custom Sub 'bench'

    Hey all, just looking for a bit of advice really as I'm not very knowledgable in this area...

    I've taken my rear passenger seats out and crafted a flat piece of plywood to fit over the gap. I've bought 2 x 10" Subs and will install these facing up through the wood. I'll obviously carpet over the wood before bolting the subs down. My main question is how can I make the subs louder / more bassy. I was thinking that if I put down enough wadding underneath the plywood panel, then this would absorb the reverse-phase bass created behind the subs to stop it from cancelling out my main bass from the front of the subs. Would doing this be sufficent to make my subs louder or will I definitely have to build proper enclosures behind the subs?

    Thanks in advance.
    -Andy.

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    Moderator

    Status
    Offline
    Join Date
    Jun 2003
    Location
    World of my own
    Posts
    9,813
    No, you definately need a proper enclosure, anything else and the poor subs are just flapping in free air. I can't even imagine how bad they must sound, or even how they are still working as that "technique" is almost guaranteed to rip the cones from their chassis.
    "How to tear apart the ties that bind, perhaps fcuk off might be too kind"
    Alex Turner

  4. #3
    Toxik-Signal's Avatar
    Andy

    Status
    Offline
    Join Date
    Oct 2006
    Location
    Nottingham
    Posts
    357
    Thanks for the reply mate, I've not done much with the subs yet, just plugged them in and given them a little test to see if they work - so no damage done

    Will the boxes have to be a specific size for each sub and will I have to 'port' it?

  5. #4
    Moderator

    Status
    Offline
    Join Date
    Jun 2003
    Location
    World of my own
    Posts
    9,813
    Yes there are recommended min & max sizes for all subs, most will be fine sealed/unported.
    "How to tear apart the ties that bind, perhaps fcuk off might be too kind"
    Alex Turner

  6. #5
    Toxik-Signal's Avatar
    Andy

    Status
    Offline
    Join Date
    Oct 2006
    Location
    Nottingham
    Posts
    357
    Ok great stuff, I'll get working on some boxes then. Thanks for your help Andy

  7. #6
    5th Gear

    Status
    Offline
    Join Date
    Dec 2006
    Location
    barnsley
    Posts
    1,020
    some subs are not designed to work in enclosures
    they are designed to work in whats called "infinite baffle" or "free air"
    without knowing what type of sub you have actually bought then id be unable to tell you if you if these will work like this or not
    2003 pearlescent black s4 avant tiptronic - milltek exhaust - pre cats removed - remapped ...
    koni adjustable suspension front and rear
    alpine f1 dvi9990 -pxah990 headunit and processor - alpine d511r
    4 x focal 5ws midbass drivers - focal audiom 6w midrange - focal tce tweeters - velodyne df 12 sc servo controlled subwoofer
    3 x phoenix gold zpa 0.5 amplifiers

  8. #7
    Toxik-Signal's Avatar
    Andy

    Status
    Offline
    Join Date
    Oct 2006
    Location
    Nottingham
    Posts
    357
    Hi Dualmono, thanks for the reply, the subs I bought were these:

    http://www.caraudiocentre.co.uk/prod...5b_p-22710.htm

  9. #8
    5th Gear

    Status
    Offline
    Join Date
    Dec 2006
    Location
    barnsley
    Posts
    1,020
    looking at the thiele small parameters for the sony woofers
    id reccomend you put these in a sealed enclosure of around 0.9cu ft each they will work in a slightly smaller box but for a nice smooth response this is optimal they arent really suited for infinite baffle use at all and i suspect will sound terrible and not last very long if you try to do this with them
    they will work in a ported enclosure if you want to make them louder but again without knowing what tuning frequency you want or having an inclination what type of music you listen to then i cant really advise on what size box with what size port
    2003 pearlescent black s4 avant tiptronic - milltek exhaust - pre cats removed - remapped ...
    koni adjustable suspension front and rear
    alpine f1 dvi9990 -pxah990 headunit and processor - alpine d511r
    4 x focal 5ws midbass drivers - focal audiom 6w midrange - focal tce tweeters - velodyne df 12 sc servo controlled subwoofer
    3 x phoenix gold zpa 0.5 amplifiers

  10. #9
    Toxik-Signal's Avatar
    Andy

    Status
    Offline
    Join Date
    Oct 2006
    Location
    Nottingham
    Posts
    357
    Thanks for the advice Dual, I've re-designed how the unit will look now based on yours and Andy's advice. I'm going to have two sub enclosures mounted on top of the 'shelf' I've built (which currently overlays the back passenger seat dip). The subs will be facing towards the back of the driver and passenger seat. Will it be a problem if the boxes are longer than they are wide (more of a rectangle than a square) ?
    I think I'll build the whole thing out of MDF as I heard that's the best stuff to use?

    It will look something like this (side view facing the front of the unit)...

    ...___.........___...
    ..|( )|........|( )|..
    _/.....\____/.....\_

  11. #10
    5th Gear

    Status
    Offline
    Join Date
    Dec 2006
    Location
    barnsley
    Posts
    1,020
    id be tempted to fire the subs into the bootspace as opposed to the seats
    they will sound better and also possibly be louder as effectively theyll use the boot space as another enclosure and increase the transfer function
    2003 pearlescent black s4 avant tiptronic - milltek exhaust - pre cats removed - remapped ...
    koni adjustable suspension front and rear
    alpine f1 dvi9990 -pxah990 headunit and processor - alpine d511r
    4 x focal 5ws midbass drivers - focal audiom 6w midrange - focal tce tweeters - velodyne df 12 sc servo controlled subwoofer
    3 x phoenix gold zpa 0.5 amplifiers

  12. #11
    Toxik-Signal's Avatar
    Andy

    Status
    Offline
    Join Date
    Oct 2006
    Location
    Nottingham
    Posts
    357
    Sounds like a good idea but I don't want to risk damaging the cones from stuff in the boot. I'm constantly having to stick stuff in the boot for my job you see, it's more of a van

  13. #12
    5th Gear

    Status
    Offline
    Join Date
    Dec 2006
    Location
    barnsley
    Posts
    1,020
    put grilles on the subs
    2003 pearlescent black s4 avant tiptronic - milltek exhaust - pre cats removed - remapped ...
    koni adjustable suspension front and rear
    alpine f1 dvi9990 -pxah990 headunit and processor - alpine d511r
    4 x focal 5ws midbass drivers - focal audiom 6w midrange - focal tce tweeters - velodyne df 12 sc servo controlled subwoofer
    3 x phoenix gold zpa 0.5 amplifiers

  14. #13
    cocain's Avatar
    RAA RAA like a dungeon dragon!

    Status
    Offline
    Join Date
    Aug 2004
    Location
    The Sticks
    Posts
    178
    Lol!

  15. #14
    Toxik-Signal's Avatar
    Andy

    Status
    Offline
    Join Date
    Oct 2006
    Location
    Nottingham
    Posts
    357
    I've finished this little project now and am really happy with the results.
    Here's some pics of the finished thing:

    http://audi-sport.net/gallery/showphoto.php?photo=1755

    http://audi-sport.net/gallery/showphoto.php?photo=1756

 

 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO