Spikes Improve Bass, Dynamics, Imaging, and Focus
Put your speakers on a solid foundation with MartinLogan Energy Transfer Coupler Spikes. Use them to enhance stability on thick carpets or to create tighter coupling between speaker and floor.
These hefty hunks of metal install in minutes with absolutely no tools required. With ETC Spikes, you will immediately notice tighter, better defined bass along with cleaner, more dynamic highs plus improved imaging and focus.
They are incredibly easy they to install and adjust. All you have to do is screw them in, finger-tighten the jam nut, and then raise or lower the speaker by rotating the center spike.
These spikes have a standard 1/4-20 thread. | 
