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<blockquote data-quote="John Roberts" data-source="post: 73471" data-attributes="member: 126">Re: What is the audible result of damping?#1 only true if loudspeaker loads were pure simple resistances. Have you ever looked at a loudspeaker impedance plot vs frequency? #2 wire resistance in series will often add to any other R in a passive LP filter.I can&#039;t predict significance without knowing specific details about the individual speakers. I recall participating in a listening tests where we artificially created single digit DF with some PA cabinets. The effect was subtle and more of a LF response error (to my ears) than some dramatic sonic signature. In some guitar amps DF is made variable on purpose to increase amp/cabinet interaction ( a desirable feature in old tube guitar amps). I recall one guitar amp where HF DF and LF DF were adjustable independently (while they didn&#039;t call it DF <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":-)" title="Smile&nbsp; &nbsp; :-)"&nbsp; data-smilie="1"data-shortname=":-)" /> ). ======Getting back on topic this may be a red herring wrt to the OP&#039;s speaker issue. Have we considered power compression? If a marginal speaker is over driven, one of the bandpasses may be weakened by overheating, or even going into protection, to save itself. A speaker in protection mode, will not sound very good, just better than complete silence. &nbsp;JR</blockquote>

[QUOTE="John Roberts, post: 73471, member: 126"] Re: What is the audible result of damping? #1 only true if loudspeaker loads were pure simple resistances. Have you ever looked at a loudspeaker impedance plot vs frequency? #2 wire resistance in series will often add to any other R in a passive LP filter. I can't predict significance without knowing specific details about the individual speakers. I recall participating in a listening tests where we artificially created single digit DF with some PA cabinets. The effect was subtle and more of a LF response error (to my ears) than some dramatic sonic signature. In some guitar amps DF is made variable on purpose to increase amp/cabinet interaction ( a desirable feature in old tube guitar amps). I recall one guitar amp where HF DF and LF DF were adjustable independently (while they didn't call it DF :-) ). ====== Getting back on topic this may be a red herring wrt to the OP's speaker issue. Have we considered power compression? If a marginal speaker is over driven, one of the bandpasses may be weakened by overheating, or even going into protection, to save itself. A speaker in protection mode, will not sound very good, just better than complete silence. JR [/QUOTE]

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