https://archivedforum.beoworld.org:443/forums/30.aspxA Forum for Technical Help and Support on Bang & Olufsen products over 25 years old.enCommunityServer 2008 SP2 (Build: 31104.93)https://archivedforum.beoworld.org:443/forums/thread/258178.aspxTue, 09 Feb 2010 17:29:40 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:258178Dillen0https://archivedforum.beoworld.org:443/forums/thread/258178.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=30&PostID=258178<p>- Because of the way the speakers are constructed. The resulting impedance of the drivers and filters varies with the frequency (and theoretically also amplitude) so it&#39;s impossible to give a firm value without listing a lot of other parameters.<br />- Because in most cases it&#39;s not needed, even if using two pairs in parallel. Most amplifiers will gladly handle 2 Ohms, at least many of B&amp;O&#39;s will.</p> <p>Martin</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/258153.aspxTue, 09 Feb 2010 15:26:24 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:258153petergutierrez0https://archivedforum.beoworld.org:443/forums/thread/258153.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=30&PostID=258153<p>On the back of my Beovox S45s, it says impedence is 4-8ohms. Given the warnings I&#39;ve heard about speaker impedences and amplifiers, why don&#39;t we see a more precise figure?</p><div style="clear:both;"></div>