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Damping Factor - Actual listening tests?
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<blockquote data-quote="John Roberts" data-source="post: 145738" data-attributes="member: 126"><p>Re: Damping Factor - Actual listening tests?</p><p></p><p>The damping factor spec is mainly a measure of output impedance, mostly reduced by large amounts of negative feedback but that doesn't tell the whole story about how much current the amp can deliver, when, and how the amp will behave dynamically. The hypothetical possibilities of what could cause audible artifacts in circa '90s MI amps is not on point. By the late '90s decent amps were quite good, but I repeat excessive DF will not tell you much useful about how the amp will behave, more about the physical design for marketing purposes (NF taken right from the jack to eliminate mOhms of DCR from internal point to point wiring). </p><p></p><p>I repeat a null test performed with real wire and the actual speakers might tell Jason something useful regarding his specific application. </p><p></p><p>JR</p><p></p><p>PS: To insure that the amplifier has good current delivery capability, avoid marginal (2 ohm or 4 ohm bridged) loads.</p></blockquote><p></p>
[QUOTE="John Roberts, post: 145738, member: 126"] Re: Damping Factor - Actual listening tests? The damping factor spec is mainly a measure of output impedance, mostly reduced by large amounts of negative feedback but that doesn't tell the whole story about how much current the amp can deliver, when, and how the amp will behave dynamically. The hypothetical possibilities of what could cause audible artifacts in circa '90s MI amps is not on point. By the late '90s decent amps were quite good, but I repeat excessive DF will not tell you much useful about how the amp will behave, more about the physical design for marketing purposes (NF taken right from the jack to eliminate mOhms of DCR from internal point to point wiring). I repeat a null test performed with real wire and the actual speakers might tell Jason something useful regarding his specific application. JR PS: To insure that the amplifier has good current delivery capability, avoid marginal (2 ohm or 4 ohm bridged) loads. [/QUOTE]
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