Etymotic Research er-4pt Техническое Руководство
9
SPECIFIC ATIONS
Response Accuracy: 86%
Noise Isolation: 35-42 dB
Frequency response: 20 Hz - 16 kHz
Acoustic polarity: + electrical = + acoustic
Transducer type: balanced armature
1 kHz sensitivity: 108 dB SPL for a 0.2 V input (102 dB @ 0.1 V; 106 dB @ 1mW)
Impedance: 27 Ohms nominal
Maximum output: 122 dB SPL
Maximum continuous input: 0.75 Vrms
Noise Isolation: 35-42 dB
Frequency response: 20 Hz - 16 kHz
Acoustic polarity: + electrical = + acoustic
Transducer type: balanced armature
1 kHz sensitivity: 108 dB SPL for a 0.2 V input (102 dB @ 0.1 V; 106 dB @ 1mW)
Impedance: 27 Ohms nominal
Maximum output: 122 dB SPL
Maximum continuous input: 0.75 Vrms
Cable: 5' with 3.5 mm stereo plug
Weight: less than 1 oz.
Response of ER•4PT Earphones
(measured at eardrum)
The gray line is the ER•4PT earphones response curve.The dashed line is the target
response of the open ear to a live performance. The solid black line represents how a
listener perceives the sound.
response of the open ear to a live performance. The solid black line represents how a
listener perceives the sound.