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ER6i-我的评测
. u: F4 U) C: L* t1 l最近拿了个ER6i测了一下~' p7 i4 E9 z3 T+ `/ l+ L" e
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|1 {: d3 t- e( \: a. z4 M0 `Etymotic ER6i is a in-the-ear type stereo headset. It provides a isolation of over 25dB against the noise outside. Below is the measurement done this morning in AE lab, CDC., [ r, w* o" C) l
1. Isolation against ambient noise
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Left channel Isolation (ER6i). ~& F1 D% G+ {' u& Z
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. g" ], Y- J+ z5 K' F4 ARight Channel Isolation (ER6i)
1 K$ _6 X: ~$ u% h% z! |0 uDue to the in-the-ear design, ER6i provides much better noise canceling compared with normal circumaural earphones and normal earbuds. In the frequency below 1 KHz, the isolation is around 18dB and more than 25dB over 1 KHz, as shown in the pictures above.
7 U4 O5 [: R" B) L2 Z0 R8 h2. Frequency Response and THD; H$ g9 j* ?: a# X/ @" }
Former try listening gives a feeling that the ER6i lacks in bass and it is proved by its response. Pictures below reveal why it’s bass-free.
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Frequency Response and THD: Left Channel (ER6i)
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Frequency Response and THD: Right Channel (ER6i)
Q4 {% C b- q, B5 U$ m2 GThe frequency response of ER6i conforms to the Type4.3 ear simulator well, which is shown as below.
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Response of Type4.3 Ear simulator: ^1 I/ M: T" T6 m) W
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Response of Bass-Rich ear bud (Brand Senmai)0 @1 H" A7 @# Q: q, G
Compared with the response given above, the ER6i’s response below 1 KHz is quite flat, within ±2dB. Instead, the Bass-Rich ear bud has a peak around 500Hz, which will result in plenty of bass elements while listening music. And that’s why ER6i is designed to classic music without too much bass.0 }3 m9 s9 R8 a/ e3 C% q, F
The huge difference of THD may derive from driver type. ER6i applies balanced armature while the other dynamic. |
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