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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: RE: Horns posted by Brad from ATC USA on April 3, 2024 at 13:35:22:
It's possibly worse when each driver has a different compression function. In addition to impacting dynamics it will also create frequency response imbalances.
While it is a fact that all drivers have thermal compression issues, the fundamental question is "At what SPL do the effects become audibly detrimental to the perception of dynamics?"
A driver that needs mW to reach 100dB (like a 110dB/watt compression driver) will not be getting significantly hot and therefore not experiencing significant thermal compression, whereas an 88dB driver will need 16 watts to reach 100dB...and that is only if thermal compression hasn't already begun to lower the sensitivity of the driver by a dB or two. With that amount of power it will get hot very quickly and compress the signals that come immediately afterwards because while heating is very rapid, the cooling is much slower and dictated by the mass and ventilation of the voice coil and surrounding magnet structure.
Given the domestic listening levels, it is clear that speakers with a sensitivty of over 95dB will rarely be heating their coils significantly, whereas a speaker composed of lower sensitivity drivers (even if one of the drivers is not low sensitivity the least sensitive driver will cause a problem and unbalance the speaker) will almost certainly compress music peaks, even at less than ear splitting levels.
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- RE: Horns - morricab 04/4/2403:50:09 04/4/24 (0)
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