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Jeraldo



Joined: 10/09/05
Posts: 2131
KH120, ports, and spl new
      #983609 - 22/04/12 12:14 PM
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I'm curious to know if ported monitors, and specifically the KH120's like to see a certain SPL level for a specified frequency response measurement, and if so, how much-if at all-the performance of the lower end drops with reductions in SPL level. For example, listening within a couple of meters at around 75-80-85 dB C.

Thanks.


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Hugh RobjohnsAdministrator
SOS Technical Editor


Joined: 25/07/03
Posts: 18368
Loc: Worcestershire
Re: KH120, ports, and spl [Re: Jeraldo]
      #983610 - 22/04/12 12:20 PM
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The lf response of ported monitors does become less efficient with lower SPL -- or put another way, the bass falls off disproportionately as the level falls. Basically there needs to be a certain minimum airflow for the port resonance to work properly.

I've not seen any monitor specify a minimum level.

Hugh

--------------------
Technical Editor, Sound On Sound


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