ETC Source Four Mini C-Clamp, Miniature 100818663 It features one 12" LF

It features one 12" LF speaker in a bass-reflex tuned enclosure and one 3" diaphragm compression driver coupled to a DOSC waveguide

and system protection and limitation designed by Electro-Voice ensures that the PXM-12MP will play loudly and consistently even at the edge of its specifications

and Still sources

Dimensions: 4

Digital Audio Inputs: 2 channels of balanced AES/EBU audio

ETC Source Four Mini C-Clamp, Miniature 100818663 It features one 12" LFETC Source Four Mini C Clamp, Miniature This Source Four Mini accessory is a mini c clamp (miniature) which allows you to attach the Source Four Mini fixture to small pipes and or tubing.