What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.



H.H. Scott '59





Pioneer SE-L15 headphones

Lightweight Stereo Headphones

The latest ideas in headphone technology are incorporated into our top-of-the-line SE-L15 Lite-Phones. Pioneer's exclusive "Variable Chamber" design, provides rich, full-bodies bass response. A corrosion-free gold-plated plug reduces contact resistance for less signal loss. For your convenience, the SE-L15 is provided with two interchangeable cords, one for portable cassette players and one for home hi-fi systems,. In addition, a muting switch on the cord socket lets you listen to outside sound without removing the headphones.

 


Cross-section Diagram of Variable Chamber Design

  1. Air control path
  2. Damping diagram
  3. Damping mesh
  4. 4 Back air port
  5. 5 Tangential-edge dome diaphragm

 

Specifications

Impedance:  50 Ω

Sensitivity:  101 dB/mW (1 kHz)

Max. Input Power:  100 mW (each channel)

Frequency Range:  10 - 22,000 Hz

Connection Cords:  3 m with gold-plated standard plug, 1,5 m with gold-plated mini plug

Weight:  75 g (2,7 oz) without connection cord


 

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