User Manual
WARRANT Y Etymotic Research warrants this product against defects in material or workmanship for a period of two years from the date of original purchase from an authorized Etymotic distributor or reseller. Etymotic will repair or replace the defective product at its option if returned within the warranty period to our service facility.
ABOUT ABOUTETER•4 YMOTIC EARPHONES RESEARCH ER•4 MicroPro earphones were the first high-fidelity, in-ear earphones to use balanced armater drivers.These high definition transducers combine flat frequency response with passive noise isolation. Noise reduction with ER•4 MicroPro earphones occurs naturally when the eartips are sealed in the ear canals. Earphones with active noise-canceling add circuit noise and require batteries.
ABOUT DESCRIPTIONS ET YMOTIC RESEARCH ER•4P earphones can be used with any audio source without requiring an additional amplifier. ER•4P earphones have 10 dB greater output at high frequencies and 13 dB greater output at low frequencies than ER•4S earphones.The higher sensitivity and enhanced bass of the ER•4P earphones have made them Etymotic’s most popular premium earphones.
ABOUT SYSTEM ET YMOTIC INCLUDES RESEARCH • ER•4 MicroPro earphones • 5 ft cord with 3.5 mm stereo phone plug • 1⁄4" stereo phone adapter plug • Assorted eartips • Filter changing tool and replacement filters • Shirt clip • Pouch and storage box Storage Box OPTIONAL ACCESSORIES Airline adapter Cable to convert ER-4P to ER-4S response Replacement accessories are available at www.etymotic.com.
EARTIPS ER•4 MicroPro earphones are supplied with an assortment of eartips that seal most ears. Eartips provide excellent sound reproduction when properly inserted. 3-flange eartips • Clean regularly • Replace every 6-12 months 3-flange large 3-flange small Foam and Glider eartips • Disposable • Replace as needed Black foam eartip Glider eartip Changing the eartips • A combination of twisting and pulling is recommended for eartip removal. • Be careful not to bend the earphone.
INSERTION Sound quality and noise isolation depend on how well the eartips seal. If the earphones seem to lack bass, insert the earphones deeper into the ear canals to obtain a better seal, or try another eartip option. 3-flange eartip insertion • For best results, moisten the eartip before insertion. • Carefully insert one earphone at a time, pulling up and out on the back of the ear. The earphone should seal deeply and comfortably in the ear canal.
FILTERS ER•4 MicroPro earphones have special filters that shape the frequency response and prevent earwax from entering the earphones. These green filters are located in the end of each earphone and are visible when the eartips are removed. A dirty filter will reduce or block the earphone output. A filter may be blocked without appearing to be dirty. If one or both earphones stops working, or if the volume decreases, filter(s) should be replaced.
CHANGING FILTERS Filter removal 1. Remove Eartip. 2. Screw the threaded end of the tool into the filter to grasp it. Filter replacement 1. Insert a new filter. Then gently press the earphone against a hard surface to secure the filter in place. 2. Re-attach eartip. 9 3. Remove filter by pulling straight out.
SPECIFIC ATIONS Response Accuracy: ER-4B/4S: 92% ER-4P: 86% Noise Isolation: 35-42 dB Frequency response: 20 Hz - 16 kHz Acoustic polarity: + electrical = + acoustic Transducer type: balanced armature 1 kHz sensitivity (ER-4B/ER-4S): 108 dB SPL for a 0.79 V input (90 dB @ 0.1 V; 100 dB @ 1mW) 1 kHz sensitivity (ER-4P): 108 dB SPL for a 0.2 V input (102 dB @ 0.
SPECIFIC ATIONS Response of MicroPro Earphones (measured at eardrum) The above graph indicates that 4P earphones have 10-12 dB higher sound output and slightly more bass than the ER•4S earphones. The dotted red line is the target response of the open ear to a live performance (CD equalization). The black line represents how a listener perceives the sound.
ABOUT ET YMOTIC RESEARCH Etymotic Research is a research, development and manufacturing company that designs products to measure, improve and protect hearing. Etymotic has spent over twenty-five years developing in-ear technology for auditory research, precision monitoring and critical listening. Etymotic has developed many of the innovative hearing technologies available today. Etymotic’s products are used by musicians and others who insist on superior sound quality. Etymotic means“true to the ear.
