Instruction/ maintenance manual of the product Er-4b Etymotic
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U s e r M a n u a l.
C A U T I O N Consult a ph ysician or audiologist if y ou ha ve excessive ear wax, difficult y inserting the eartips, or disc omfor t after pr olonged use .
3 A B O U T E T Y M O T I C R E S E A R C H A B O U T E R • 4 E A R P H O N E S ER • 4 MicroPro earphones were the first high-fidelity , in-ear earphones to use balanc ed arma ter drivers. These high definition transducers combine flat frequency response with passiv e noise isolation.
A B O U T E T Y M O T I C R E S E A R C H 4 D E S C R I P T I O N S ER • 4P earphones can be used with any audio sour ce without requiring an additional amplifie r . ER•4P earphones have 10 dB gr eater output a t high frequencies and 13 dB gr eater output a t low frequencies than ER•4S earphones.
A B O U T E T Y M O T I C R E S E A R C H 5 S Y S T E M I N C L U D E S • ER • 4 Micr oPro earphones • 5 ft c ord with 3.5 mm stereo phone plug • 1⁄4" stereo phone adapter plug • Asso.
E A R T I P S ER•4 MicroPro earphones are supplied with an assortment of eartips that seal most ears. Ear tips pr ovide excellent sound r eproduction when properly inser ted .
I N S E R T I O N Sound quality and noise isolation depend on how w ell the ear tips seal. If the earphones seem to lack bass, insert the earphones deeper into the ear canals to obtain a better seal, or try another ear tip option. 3-flange ear tip insertion • For best results , moisten the eartip befor e insertion.
F I L T E R S 8 ER•4 MicroPro earphones hav e special filters that shape the frequency response and prev ent ear wax fr om en tering the earphones. These gr een filters are loca ted in the end of each earphone and ar e visible when the eartips are removed .
9 1. Remove Eartip. 2. Screw the threaded end of the tool into the filter to grasp it. 3. Remove filter by pulling straight out. 1. Insert a new filter. Then gently press the earphone against a hard sur face to secure the filter in place. 2. Re-attach ear tip.
10 S P E C I F I C A T I O N S Response Accuracy: ER-4B/4S: 92% ER-4P: 86% Noise Isolation: 35-42 dB Frequency response: 20 Hz - 16 kHz Acoustic polarity: + electrical = + ac oustic T ransducer type: balanced armature 1 kHz sensitivit y (ER-4B/ER-4S): 108 dB SPL for a 0.
11 Response of MicroPro Earphones (measured at eardrum) The above gr aph indicat es that 4P earphones have 10-12 dB higher sound output and slightly mor e bass than the ER•4S earphones. The dott ed red line is the tar get r esponse of the open ear to a liv e performance (CD equal ization).
ET YMO TIC RESEARCH INC. 61 Mar t in Lan e • E lk Grove V il la ge, I L 60 00 7 w w w. e t y m o t i c . c o m • 8 8 8- 38 9- 66 8 4 ER • 4 MicroPro TM is a trademark of Etymotic Research, Inc.
An important point after buying a device Etymotic Er-4b (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Etymotic Er-4b yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Etymotic Er-4b - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Etymotic Er-4b you will learn all the available features of the product, as well as information on its operation. The information that you get Etymotic Er-4b will certainly help you make a decision on the purchase.
If you already are a holder of Etymotic Er-4b, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Etymotic Er-4b.
However, one of the most important roles played by the user manual is to help in solving problems with Etymotic Er-4b. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Etymotic Er-4b along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
