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<blockquote data-quote="John Roberts" data-source="post: 145769" data-attributes="member: 126">Re: Damping Factor - Actual listening tests?Thank you Peter, I know you know... <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=":-)" /> ======Jason, not everybody thinks DF is an important factor... IMO it hasn&#039;t been for decades. The manufacturers who hype it still, have commerce in mind. Regarding your 200-300&#039; speaker run, common practice is to use a constant voltage (high voltage) distribution system. This step-up/down transformer approach reduces the sensitivity to wire impedance. I would estimate a weighting of factors regarding that preference as probably 80% reducing power losses, 15% reducing sensitivity to speaker impedance frequency response effects, and 5% other. DF is in that 5% other but not the only thing in there. If still concerned do the null test I proposed, I doubt you will find much at all, and what is there will not be nasty. If you want the highest fidelity locate the amps at the speaker, otherwise do what makes the most sense for you. JRPS: I recall a fixed sound manufacturer promoting a system decades ago where the typical CV wiring was used to distribute power (DC if I recall correctly), with the audio multiplexed on top of the power. A small audio driver IC was located at each speaker driver.&nbsp; I don&#039;t think this system gained much traction, or that it works for you.</blockquote>

[QUOTE="John Roberts, post: 145769, member: 126"] Re: Damping Factor - Actual listening tests? Thank you Peter, I know you know... :-) ====== Jason, not everybody thinks DF is an important factor... IMO it hasn't been for decades. The manufacturers who hype it still, have commerce in mind. Regarding your 200-300' speaker run, common practice is to use a constant voltage (high voltage) distribution system. This step-up/down transformer approach reduces the sensitivity to wire impedance. I would estimate a weighting of factors regarding that preference as probably 80% reducing power losses, 15% reducing sensitivity to speaker impedance frequency response effects, and 5% other. DF is in that 5% other but not the only thing in there. If still concerned do the null test I proposed, I doubt you will find much at all, and what is there will not be nasty. If you want the highest fidelity locate the amps at the speaker, otherwise do what makes the most sense for you. JR PS: I recall a fixed sound manufacturer promoting a system decades ago where the typical CV wiring was used to distribute power (DC if I recall correctly), with the audio multiplexed on top of the power. A small audio driver IC was located at each speaker driver. I don't think this system gained much traction, or that it works for you. [/QUOTE]

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