#3DPNSpeakerCover

You can glue some steel pieces (like nuts and bolts) into octagon 1 and it may bounce when there is really heavy bass, because the magnet comes in the speaker comes closer to the cover. I'm not sure about this is working but worth a try. put the octagons in to the base then glue the roof to the base carefully so it is in level with the top of the base.