The real source impedance is relevant (not the nominal one)

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In Reply to: Re: Valve PP amps more tolerant of under 8ohm speakers? posted by Tiny Daddy on September 1, 2003 at 19:32:58:

Hi there,
the issue is:
What is the real source impedance of the amplifier.
OTL and some SE do have a source impedance of several ohms.
Good PPs with some overal NFB usually have a source impedance smaller
than one ohm.
The source impedance and the speaker impedance form a voltage divider
- if the speaker has a widely varying impedance over frequency, the
combination of amplifier and speaker will produce linear distortion -
some frequencies will be more attenuated than others.
The lower the source impedance of the amplifier, the less pronounced
will these frequency response variations be -
The rest is left for you to figure out.
Regards,
---mb---
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Follow Ups Full Thread

Topic - Valve PP amps more tolerant of under 8ohm speakers? - SiDog 15:51:26 09/01/03 (4)

Re: Valve PP amps more tolerant of under 8ohm speakers? - zarniwoop 13:58:29 09/02/03 (0)

Re: Valve PP amps more tolerant of under 8ohm speakers? - pp man 23:47:10 09/01/03 (0)

Re: Valve PP amps more tolerant of under 8ohm speakers? - Tiny Daddy 19:32:58 09/01/03 (1)

The real source impedance is relevant (not the nominal one) - mb-de 05:21:38 09/02/03 (0)

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The real source impedance is relevant (not the nominal one) - mb-de 05:21:38 09/02/03 (0)

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