Back to shop ↗
THE HOLDEN COMMODORE FORUM

HOLDCOM Community

Built around the cars. Kept alive by the people.

+ Start a discussion
Holden Commodores gathered at Holdcom
Forum Home›General discussion
General discussion

Bolting Down Subs

Started by Kylie · 9 Jan 2003 · 52 replies

Preserved from CalaisTurbo. Original authors and dates are shown; archived members are not current Holdcom accounts.

KylieArchived member
Unlike a lot of people I know, I don't like to have my Sub rolling around my Boot whenever I go around corners, so which is the best way to go about Bolting Down Subs in the Boot? Which is the best location and what experience have you guys had in the past? Note that I currently have the rear of my car up on Stands and have removed the Fuel Tank so I have easy access to the Underside of the Boot as well... Any help or suggestions are much appreciated... Some original photos have not been recovered yet.
0 likes
VL CommyArchived member
is your sub box up against the back seat?? if so just bolt it through the back seat and into the box
0 likes
KylieArchived member
No, its too big to fit up in that area, it has to go down in the lower area, I am however bolting my Amp to that Back Seat Section though... Some original photos have not been recovered yet.
0 likes
Lord-DataArchived member
Velcro to the carpet? Youd be surprised the ammount of strength a few strips of velcro will hold when its got the weight of a sub and box on top of it. Solves issues of permancy too..
0 likes
KylieArchived member
Yeah I thought of that, thats what I used for my Amp under the seat, however my sub is in a carpeted box, so I don't know how I'm going to attach velcro to it. I think I might end up bolting it to the flat piece of board that I'm going to put under the carpet to make it smooth, which will be held down by Velcro... Some original photos have not been recovered yet.
0 likes
BurgundyCalaisArchived member
or just get two strips of velcro, glue them back to back, and sandwich them between sub box and boot floor...
0 likes
KylieArchived member
Damn! Thats a bloody good idea! Never thought of that, I'll try it when I've finished my Boot, which will be in a while, but still... 8)
0 likes
Lord-DataArchived member
Or, an alternative if you wanna attach em properly to the sub, staple em there .. staple gun would work best, but if you just belt a normal stapler on there hard enough it should go thru ..
0 likes
Ads SL/EArchived member
well i seem to know most things about car audio and a fair bit about vl's so the easiest way is to go to the local hardware store and get some "L" vrackets (about 1-2$ each) and screw 2 screws (SMALL ONES) make sure they are small so that they do not puncture the sub box Causing air leaks, then 2 more small screws or blots if you like in to the piece of wood that goes over the spare wheels well. bolts because they can be undone for easy removal of the box. i will try and get some pics for you kylie to better explain my theory. Cheers Ads
0 likes
BurgundyCalaisArchived member
Quote: well i seem to know most things about car audio Teehee, should we call you Mr Big Head? lol sorry dude, just teasin
0 likes
Ads SL/EArchived member
new that would come back to bite me in the arse. DAMN!!! i just try to help, i have just finished deadning the boot lid in the wagon about 1/2 an hour ago and now its all good, no bloody annoying vibrations.
0 likes
VK-TurboArchived member
Don't use screws or velcro to hold a sub box in place, bloody hell. The box is way to heavy for some screws and will easily rip them out of whatever they are srewed into and although it may sit still with velcro it wont sit still for long . The safest solution is bolts with washers. If you have your car up on stands and the tank removed, your job is half done. Remove the sub from your box, place the box in the desired location, and drill at least two holes through the box and floor. To get an airtight fit, fill the hole with gapsealer before inserting the bolt, once throught tighten the bolt up. Make sure that there is a washer that is at least as big as a 20cent piece on both the box side and under the car before the nut. You could use any piece of 3mm steel say 5cm x 5cm with a hole drilled in the middle instead of washers for greater safety and strenght.
0 likes
BurgundyCalaisArchived member
Dude, you're going nuts there! Quite often just having carpetted boxes sitting on boot carpet will provide enough friction to keep the box in place. Obviously, this only works in situations where the car is not being tossed around a lot. But remeber, the heavier the box, the greater frictional force will be in action. If you really want the thing to stay put, whack a load of liquid nails between the box and your boot. But who really want to do that? and who really wants to srew big holes in their boot either? Ok ok, some people are gonna want to, but really, velcro will do the trick for non track racers.
0 likes
KylieArchived member
Yeah I was thinking about some small screws that go through the back of the box and through the holes where the Tow Bar is supposed to be attached... :roll: I'm not a racer, but I do want it to stay still. Remember my carpet probably won't be glued down either... :?
0 likes
JaydeArchived member
I think about the greatest thing I ever saw was a guy in this car that he spent heaps on, stuck on the side of the road with a flat because his spare was stuck under the subs he bolted down thru the spare compartment. THAT is classic.
0 likes
VK-TurboArchived member
I guess none of you understand the laws of physics. If you have a loose box in the boot area and you brake the weight of the box combined with the force induced from the car stopping is enough to move a sub box. You may not brake or turn hard 90% of the time you are driving, but the 10% that you do for whatever reason (idiot in front of you slams his/her brakes, or idiot pulls in front of you) I can assure you your sub box will move. This may not be too bad in a sedan with a seperate boot area, but in a hatch it can be dangerous and even fatal. Even in a sedan, the box can move and dent your guards from the inside. Think of it this way. An average male of 175cm tall weighs 75kg (Much heavier then most, if not all, sub boxes). Do you really think that if this average male was a passenger in a car is travelling at say 80 - 100km/h, wearing no seat belt and not holding on to anything, and all he had was a piece (or two or three) of velcro strapped/stappled/stiched to his ass that if he had to slam his brakes the velcro would hold him in place. C'mon use your brains.
0 likes
Morgz85Archived member
Im using velcro strips underneath my 60L sub box, it hasnt moved at all!!! And ive been doing some pretty crazy driving lately (ive even taken it round the local race track for a couple laps) and it still aint moved.....
0 likes
VK-TurboArchived member
Look fellas. I agree that a smallish metal tap screw, or velcro has enough strength to hold a 60L subbox in place 99% of the time. This may be fine for some time, but wont last forever. I hear you saying well I'll just replace the screws or velcro as they wear. Sure this will then bring it back to the same standard as before, and work 99% of the time. What I'm talking about is the other 1%. Not so much in a sedan but more a hatch. If the velcro or screws fail, a 60L subbox will more then likely severely injure the occupants in the car in a crash. Also a screw may snap at just the wrong time resulting in the same in an accident situation. Could also let you in on a little secret. If your car is broken into, and trust me if it has a loud or advertised system it will, then velcro or tiny/small screws wont do ****. They'll clean you out without even breaking a swet. If you have a couple of bolts, you have much more chance of keeping your stuff.
0 likes
KylieArchived member
The reason I suggested Small Screws is because the back curve of my Sub Box will be resting up against the Rear Axle Tunnel/Hump, as for it being stolen, I've got bigger things to worry about if someone does try and steal it, such as the damage caused to break in... :?
0 likes
VK-TurboArchived member
No problems K. If thats the case, then some smallish screws will have to do. Still, I would try and fix it into position with some torx (i think thats what they're called) headed screws or those one way screws for just a little bit of reassurance. That way it will at least make it a tad harder and longer for the scum stealing your car audio.
0 likes
Sign in or create an account to reply. New members are welcome—no purchase or old CT account needed.

Who’s online

0 members and 0 guests active in the last 15 minutes

No signed-in members active right now. Guests are welcome to browse.

Visitors Today2

33,602 threads, 484,230 posts and 22,034 images saved from CT

98.1% of indexed threads saved