PHONEMA PHITS RCX-1 - Collins 312B-3

PHITS is a set of acoustic materials designed to improve the sound of any speaker. Reverberation is eliminated, bass frequencies becomes more natural and sound improves incredibly.
PHITS is installed without the need to modify the loudspeaker and without using any glue.
Phits RCX is the best solution for rejuvenating the audio of your Collins, whether your speaker has become too dry or you prefer to hear the sound at the highest quality.
Phits RCX is a loudspeaker made of 16 mm MDF and filled with acoustic foam, so the sound is projected only from the front. Any out-of-phase sound and all reverberation is eliminated.
Colins on the outside, Phonema on the inside. Simply remove the old speaker and insert Phits RCX inside.