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Doug Self preamp gets rough ride, An example of the destructive effects of unmoderated subjectivism
wakibaki
post Aug 15 2012, 09:39
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http://www.diyaudio.com/forums/solid-state...-design-53.html

In the latter half of this thread, moderators defend the right of posters to undermine the reputation of the latest design from this outspoken opponent of subjectivism, based only on unsupported subjective opinion. Well-known designers and respected analog 'gurus' lend their tacit support by participating in the thread.

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greynol
post Aug 16 2012, 13:23
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Tight and overdamped? Since when does a preamp take on the characteristics of a poweramp driving speakers?


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Arnold B. Kruege...
post Aug 16 2012, 14:26
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QUOTE (greynol @ Aug 16 2012, 08:23) *
Tight and overdamped? Since when does a preamp take on the characteristics of a poweramp driving speakers?


Trying to decode the stilted subjectivese, I came up with the idea that this listener's baseline for a phono preamp had a RIAA preamp that over-emphasized the bass due to an equalization error.

That would be a little surprising because the most common tech errors in RIAA preamps usually end up causing bass that is thin-sounding.

OTOH the Self design has an effective subsonic filter which would avoid some common kinds of excess bass due to tone arm resonances and/or incipient feedback due to a lack of acoustical or mechanical isolation.
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