Talk:Audio amplifier
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[edit] Transistor amplifiers
Practical transistor amplifiers were not only due to cheap solid state devices but early transistors also had issues with mid-band gain, alot of this issues were first cataloged by RCA (see specifically the work of Larry Giacoletto) —The preceding unsigned comment was added by Mattpalmer84 (talk • contribs) 2006-04-18T07:27:24.
[edit] Levels and comparisons
I'd like to edit the introduction of this article because it makes what I believe are two mistakes.
- (Refering to an amplifier's low power input levels) By "low power" it is meant that the signals are usually limited to those required to drive headphones (less than 500 mW).
The input stages to most audio amplifiers are designed to handle signals weaker then headphone levels. Most audio amplifiers require their inputs to satisfy line level signal levels.
- While the input signal may be only a few hundred millivolts, the power amplifier's output may have a power of many watts.
This sentence mixes incompatible units: volts and watts. I think "millivolts" should be changed to "milliwatts".
— Ke6jjj 18:47, 4 December 2006 (UTC)
- Agreed. An audio amplifier connected to a phonograph's magnetic cartridge receives mere microwatts. Using terms like "low" and "high" should probably be avoided altogether: look at what happened with the RF band names: very high, super high, etc. — EncMstr 20:25, 4 December 2006 (UTC)
[edit] Main page?
should this be the main page on audio amplifiers from which all other articles on audio amps fork off?--Light current 22:31, 31 January 2007 (UTC)