Jack Dotson Posted August 26, 2007 Share Posted August 26, 2007 Has anyone been able to locate the measurements for the CW-III's. I'm particularly interested in the impedance curve so I can determine maximum and minimum impedances and at what frequencies. Thanks. Quote Link to comment Share on other sites More sharing options...
pauln Posted August 26, 2007 Share Posted August 26, 2007 Impedance matching is only critically important where maximum power is being transferred. For audio, this is in the two octave frequency range centered at 250Hz. If a speakers is nominally rated as 8 ohm it means they behave pretty much as an 8 ohm in this range, even if they depart from that in other ranges. Quote Link to comment Share on other sites More sharing options...
DrWho Posted August 26, 2007 Share Posted August 26, 2007 Impedance absolutely matters for many reasons other than power transfer ratios.... As far as I know, Klipsch has not released any impedance response data, but I don't think they would be opposed to the idea - especially for a customer wanting to make an informed amplifier purchase. You might try giving them a call: 1-800-KLIPSCH However, there was a great review of the Cornwall II on a website that I can't seem to find at the moment. There, the author provided all sorts of information as to the nature of the speaker - including the impedance response. While it's a different speaker, the Cornwall III is going to have a very similar impedance response. If I remember correctly, the lowest impedance is about 3.8 Ohms down around 40Hz and then there are impedances above 30 Ohms through the midrange. That's the best I can do. Hopefully someone can chime in with the address of that website. Quote Link to comment Share on other sites More sharing options...
pauln Posted August 27, 2007 Share Posted August 27, 2007 That's the comprehensive review done in Belgium, right?... its been referenced before, somebody knows where it is... or has a copy;used to be at http://www.belgaudio.com/kcmap.htm but that domain has been taken over... Quote Link to comment Share on other sites More sharing options...
boom3 Posted August 27, 2007 Share Posted August 27, 2007 http://web.archive.org/web/20060116003642/http://www.belgaudio.com/kcmap.htm is the archived report on the Wayback Machine Quote Link to comment Share on other sites More sharing options...
Jack Dotson Posted August 27, 2007 Author Share Posted August 27, 2007 Assuming the Cornwall III's have a similar response curve they should not be a difficult load for any amp, including the low powered tube units I'm looking at. Thanks so much for the help. Quote Link to comment Share on other sites More sharing options...
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