Voice amplifier assembly. It provides improved communications for air-supplied and air-purifying respirator users. The voice amplifier improves person-to-person communications by projecting the user's voice clearer and farther than it would with no amplification at all. The voice amplifier can help your team communicate better in any environment you encounter. The voice amplifier can be mounted on all existing Scott AV-2000 or AV-3000 facepieces by means of a single mounting bracket. The bracket is secured over the voicemitter housing. All that is needed to lock the voice amplifier in place is a single quarter turn. The voice amplifier may also be transferred to other bracket-equipped AV-2000 or AV-3000 facepieces. Includes installation and operation manual (89328-01) and battery.