truck sub box, how to secure and stop wild vibrations?

[$$$1smiley5$$$ 10+ year member]

hey guys thanks for all you help allready. I got my system hooked up and installed but now it seems the box is movin around a bit and vibrating off the back of the cab, could I screw into the box from the outside with rubber washer screws ? I have looked at dynamat and it is EXPENSIVE is there anythoing else i could use? I am not lookin to enter any competitions so....

any help would be much appreciated

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[dadydolas 10+ year member]

you can use L brackets to mount it or take the sub out and mount it from the inside. just be careful what you drill into.

 

[t1990le 10+ year member]

you can use L brackets to mount it or take the sub out and mount it from the inside. just be careful what you drill into.

yea. make sure to look if you drill through sheet metal there could be wires behind it.