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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: Re: what determines the "speed" of an amp? posted by Pam on February 12, 2000 at 14:05:55:
Pam wrote:
"Technically wrong anyway since transistors can switch orders of magnitude faster than tubes..."**This is a common misconception. An AVERAGE tube used in a typical tube amplifier, is at least as fast, as an AVERAGE transistor used in a typical SS amplifier. Don't forget, that before transistors, we were using tubes to opeate with FM radios, TV sets, etc (ca. 100MHz). Radio amateurs were (and still are) using tubes to operate at the GHz region. It is not the active devices, which limit the upper frequency limit of amplifiers, it is the coupling devices and circuit topology. In fact, it was not until the mid 1970's that high power transistors became available, which would allow SS amps to be built with a decent HF response, at low distortion.
What is different, is the COST of building amplifiers to deliver such performance.
As for your comments re. speed, please see my comments, elsewhere.
Trevor
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Follow Ups
- Re: what determines the "speed" of an amp? - Trevor Wilson 14:35:30 02/12/00 (1)
- Re: what determines the "speed" of an amp? - Pam 22:30:37 02/12/00 (0)
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