Etymotic Research er-4pt Техническое Руководство
INTRODUCTION
ER•4 MicroPro earphones were the first noise-isolating high-fidelity in-ear
earphones to use ACCU•Driver
earphones to use ACCU•Driver
™
high performance, balanced armature drivers.
These high-definition transducers combine flat frequency response with
passive noise isolation. Noise reduction with ER•4 earphones occurs naturally
when the eartips are sealed in the ear canals.
passive noise isolation. Noise reduction with ER•4 earphones occurs naturally
when the eartips are sealed in the ear canals.
Included with the earphones is the Channel-matching Compliance Graph
showing frequency response curves of each custom-tuned, balanced
armature driver.
showing frequency response curves of each custom-tuned, balanced
armature driver.
An assortment of ACCU•Fit
™
eartips is provided in this package. The triple-
flange eartips reduce sound an average of 35 dB, which is approximately
98% noise reduction. The foam eartips provide slightly more (42 dB) sound
reduction. Lowering outside sound allows you to hear the full dynamic range
of the recording without having to play it at unsafe levels.
98% noise reduction. The foam eartips provide slightly more (42 dB) sound
reduction. Lowering outside sound allows you to hear the full dynamic range
of the recording without having to play it at unsafe levels.
The ER•4 MicroPro series earphones produce the highest sound quality of any
high-definition earphones on the market today. We hope you enjoy them.
high-definition earphones on the market today. We hope you enjoy them.
Etymotic Research
You know your music. Etymotic know your ears.
You know your music. Etymotic know your ears.
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