AW: Wie klingt Elektronik?
Zu thermischer Kompression bei üblichen dynamischen Schallwandlern insbesondere im HiFi Bereich:
John Kreskovsky, "Dynamic compression due to Voice Coil Heating, Fact or Fiction?"
John Kreskovsky zeigt hier m.E. eine sehr tiefgehende und zugleich praxisorientierte Analyse.
Aus Abschnitt "Mitteltöner":
"From the above examples it would appear that dynamic compression arising from thermal effects is not likely to be significant for a typical HiFi midrange driver. Rather, the results suggest that repeated short term transients, as seen in music, lend to a gradual increase in VC temperature. This may then results in thermal compression over an extended period of listening. In the above example a 1000 w pulse, translating to a 120 dB peak level, only began to show any significant effect. In all probability, in a home audio system such power levels would not be available and
the source of dynamic compression would more likely arise form other factors, including insufficient amplifier power."
Aus Abschnitt "Hochtöner":
"The results presented above were somewhat surprising in that they indicate that dynamic compression due to thermal effects seems unlikely. Rather they suggest that any compression is the result of longer term heating of the voice coil due to sustained high power levels, and dynamic compression is likely a result of the reduction in driver sensitivity due to the long term heating coupled with limited amplifier power."
Stereophile, "Hot Stuff: Loudspeaker Voice-Coil Temperatures"
Daraus:
"So I strongly suspect that, for most hi-fi users—those who don't habitually wind the volume control to its highest position and indulge in PA listening levels—thermal compression is a paper tiger."
Zu thermischer Kompression bei üblichen dynamischen Schallwandlern insbesondere im HiFi Bereich:
John Kreskovsky, "Dynamic compression due to Voice Coil Heating, Fact or Fiction?"
John Kreskovsky zeigt hier m.E. eine sehr tiefgehende und zugleich praxisorientierte Analyse.
Aus Abschnitt "Mitteltöner":
"From the above examples it would appear that dynamic compression arising from thermal effects is not likely to be significant for a typical HiFi midrange driver. Rather, the results suggest that repeated short term transients, as seen in music, lend to a gradual increase in VC temperature. This may then results in thermal compression over an extended period of listening. In the above example a 1000 w pulse, translating to a 120 dB peak level, only began to show any significant effect. In all probability, in a home audio system such power levels would not be available and
the source of dynamic compression would more likely arise form other factors, including insufficient amplifier power."
Aus Abschnitt "Hochtöner":
"The results presented above were somewhat surprising in that they indicate that dynamic compression due to thermal effects seems unlikely. Rather they suggest that any compression is the result of longer term heating of the voice coil due to sustained high power levels, and dynamic compression is likely a result of the reduction in driver sensitivity due to the long term heating coupled with limited amplifier power."
Stereophile, "Hot Stuff: Loudspeaker Voice-Coil Temperatures"
Daraus:
"So I strongly suspect that, for most hi-fi users—those who don't habitually wind the volume control to its highest position and indulge in PA listening levels—thermal compression is a paper tiger."
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