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<blockquote data-quote="hispls" data-source="post: 8724963" data-attributes="member: 614752">147 to high 151s IIRC.&nbsp; Consider my impedance wired to 5.6 ohm nominal was probably 16-20 ohms.&nbsp; Even the big boy Crown amp doesn&#039;t make all that much power there but it does put out a lot at 4 ohm.&nbsp;&nbsp; Neodymium motors can give some big impedance numbers.A friend of mine was competing rookie class about 8 years ago with a 500/1 and we got (slightly) better numbers running at .7 than at 3 ohm.&nbsp; Dyno shows the Taramps &quot;smart&quot; 3K made its best power at 2 ohm.&nbsp;&nbsp; The difference for music listening would be inaudible but with competition you really just have to test everything.&nbsp;&nbsp; He was absolutely killing it in the rookie class (up to 2000W limit no test tones no re-bass) doing 142&#039;s.&nbsp;&nbsp; He had a couple new children and sold me the sub back, now it&#039;s living in my F250, poor numbers in there but I don&#039;t haven&#039;t made enough space for a proper box.The whole loudspeaker as a circuit thing was figured out long ago and while it&#039;s a bit above my pay grade I suspect that&#039;s partly how we can model and predict response.&nbsp; High impedance isn&#039;t necessarily a bad thing, and depending on the region and the competition class, &quot;music&quot; boxes can be competitive.</blockquote>

[QUOTE="hispls, post: 8724963, member: 614752"] 147 to high 151s IIRC. Consider my impedance wired to 5.6 ohm nominal was probably 16-20 ohms. Even the big boy Crown amp doesn't make all that much power there but it does put out a lot at 4 ohm. Neodymium motors can give some big impedance numbers. A friend of mine was competing rookie class about 8 years ago with a 500/1 and we got (slightly) better numbers running at .7 than at 3 ohm. Dyno shows the Taramps "smart" 3K made its best power at 2 ohm. The difference for music listening would be inaudible but with competition you really just have to test everything. He was absolutely killing it in the rookie class (up to 2000W limit no test tones no re-bass) doing 142's. He had a couple new children and sold me the sub back, now it's living in my F250, poor numbers in there but I don't haven't made enough space for a proper box. The whole loudspeaker as a circuit thing was figured out long ago and while it's a bit above my pay grade I suspect that's partly how we can model and predict response. High impedance isn't necessarily a bad thing, and depending on the region and the competition class, "music" boxes can be competitive. [/QUOTE]

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