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Damping Factor - Actual listening tests?
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<blockquote data-quote="Ivan Beaver" data-source="post: 145734" data-attributes="member: 30"><p>Re: Damping Factor - Actual listening tests?</p><p></p><p></p><p>I was commenting that with the more modern amps (at the time in the late 90s) some of the ones with the highest damping factor had a "less controlled" sound, or more "flopping around" of the drivers.</p><p></p><p>The last comment you quoted was based on a decade or two earlier amps.</p><p></p><p>This was done with amps that were pretty close in power ratings, and all the gains were matched.</p><p></p><p>We used one of our front loaded 2x18" subs. The source material was recorded kick drums, low freq impulses and kick heavy music.</p><p></p><p>We did it in a blind test (not double blind) but close enough.</p><p></p><p>The same cable and speaker was used in all tests.</p><p></p><p>We listened and watched the speaker cones for movement. We did not measure the movement-so it was subjective.</p><p></p><p>The "tightness" was judged by the "free extra sounds" we could hear after the sound stopped from the source.</p><p></p><p>But that was almost 20 years ago-so I might come to different conclusions today. I believe we had 5 different amps that covered the range from cheap MI to "accepted on every rider" amps. So not a wide assortment-but it was all I could get my hands on at the time.</p></blockquote><p></p>
[QUOTE="Ivan Beaver, post: 145734, member: 30"] Re: Damping Factor - Actual listening tests? I was commenting that with the more modern amps (at the time in the late 90s) some of the ones with the highest damping factor had a "less controlled" sound, or more "flopping around" of the drivers. The last comment you quoted was based on a decade or two earlier amps. This was done with amps that were pretty close in power ratings, and all the gains were matched. We used one of our front loaded 2x18" subs. The source material was recorded kick drums, low freq impulses and kick heavy music. We did it in a blind test (not double blind) but close enough. The same cable and speaker was used in all tests. We listened and watched the speaker cones for movement. We did not measure the movement-so it was subjective. The "tightness" was judged by the "free extra sounds" we could hear after the sound stopped from the source. But that was almost 20 years ago-so I might come to different conclusions today. I believe we had 5 different amps that covered the range from cheap MI to "accepted on every rider" amps. So not a wide assortment-but it was all I could get my hands on at the time. [/QUOTE]
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