Stax sr sigma brochure

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S R- E Sigma

panoramic imaging
electrostatic earspeaker

The STAX SR-Sigma panoramic imaging electrostatic
earspeaker design is a successful attempt to recreate a
natural, realistic sound field from a headphone format.
Headphones were originally designed for picking up
Morse Code in communications, not recreating a
musical sound stage. Until the introduction of the
STAX SR-Sigma, no headphone manufacturer paid
much attention to ambience and its effect on musical
imaging.

The SR- -Sigma earspeaker design locates an oval shaped
electrostatic transducer in front of the ear at a 90°

angle to the ear. This does two things to improve the
image perspective to the listener. First, by using an
oval shaped transducer that is larger than the outer
ear itself, the SR-Sigma allows the outer ear to natura|~
|y channel the waveform into the inner ear. This allows
the sound to reach the eardrum in the most conven-
tional way. Second, the transducer is located in front
of the ear, not over the ear. This removes the image
perspective from within the listener's head and places
the image in front of the listener. The SR-Sigma
transducing elements are positioned ideally in terms of
the natural perimeters and auditory path of the ear.
The result is optimum spacing for music in relation to
the ear. The SR»Sigma gives natural sound with none of
the tight, sealed-in feeling, or the diminished scale
sensations conveyed by ordinary headphones.

Specifications

Type Electrostatic
Frequency Response 30-35 KHz
Sensitivity 94dB/100v rms

Maximum Output 103dB