| #686 - Ultimate Ears super.fi 5 EB Earphones |
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| Written by Rodney Reynolds | |||||||
| Monday, 26 June 2006 | |||||||
Page 3 of 5 Specifications: Below is a list of all the features and specifications of this product. - Speaker Type: Dual driver: low range - 13.5mm diaphragm, high range - precision balanced armature - Input Sensitivity: 119dB/mW - Impedance: 11 Ohms - Cable Length: 46 inches - Weight: With Cable Assembly: 0.7 oz. - Input connector: 1/8" (3.5mm) Gold plated - Frequency Response: 20 to 16,000 Hz - Noise isolation: 16 dB Before I continue on to the next section, let me first highlight the basics of sound and speakers. In order to hear anything you need to have a eardrum. If you don't have one, I believe you can order one online (I'm joking). Think of an eardrum as the middleman. Your eardrum is a very thin piece of skin which is inside your ear, between your brain and the outside world. When there are changes in air pressure they will enter your ear and cause your eardrum to vibrate. Your brain then takes over and interprets this as sound. So how does the brain to that? Well, because it's a brain, it's smart. Ok, there is more to it than that ;). Interpreting different sounds from different objects is all about variations in sound-wave frequency and air-pressure level. This is much too complicated to understand, right? No, no really. Sound-wave frequency has all to do with pitch. A higher wave frequency means that the air pressure fluctuates faster and with a lower pitch sound the air pressure fluctuates slower. To enjoy these sounds, keep music at a reasonable volume and don't stick anything larger than your elbow in your ear ;).  Source: Electroneonline.com So how does a speaker work? Well, a speaker driver is basically comprised of a diaphragm (or cone), voice coil, and magnet. The diaphragm is the cone shaped part of the driver. The voice coil is connected to the positive and negative leads from the amplifier. The magnet is just below the voice coil. When an electric current is passed through the voice coil it changes direction and this reverses the polar orientation. This changes the magnetic forces between the voice coil and the permanent magnet, moving the coil and attached diaphragm back and forth.  Source: Howstuffworks.com The best way to understand how the super.fi 5 EB earphones work is by examining the diagram below.  #1 - High frequency driver: This precision balanced armature which delivers clear, crisp high tonal range. #2 - Low frequency driver: This 13.5mm Diaphragm delivers deep, distortion free low tonal range. #3 - Audio Filters: Shapes the sound for maximum detail. #4 - Passive Crossover: Directs music to high and low range speakers for precise audio reproduction. |
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