ER15B Solid Plug/Attenuator

Solid Replacement Filter for Musicians Earplugs High-Fidelity Hearing Protection replacement filters

Solid buttons are available for use with Musicians Earplugs. Some earmold labs offer a solid molded button, while others seal the diaphragm of a standard button with epoxy. When the sound channel of the earmold is plugged using a solid or sealed button, the total attenuation is dependent on the button plus the earmold seal. Etymotic's sealed-diaphragm button provides approximately 30 dB attenuation (5 dB more than the ER-25) based on measures performed at E-A-R Cal Laboratories, Indianapolis, IN, using the ANSI standard Real Ear Attenuation at Threshold (REAT) method. A solid earmold provides greater attenuation than a Musicians Earplug with a sealed or solid button in the sound channel.