We have had supersonic speakers from American Hobby Distributors for over a year now. They have been good sellers and we have used them in several installs.
Now, Soundtraxx has added two “sugar cube” style speaker sizes.
The 810155 is a 13mm x 9mm x 8.85mm(D) speaker and enclosure. And the 810154 is a 16mm x 12mm x 11.25mm(D) speaker and enclosure.