https://archivedforum.beoworld.org:443/forums/13.aspxThe main Meeting Place for BeoWorld members, and the place for General Questions, Answers and things to say! If you have any questions about anything Bang &amp; Olufsen related - please ask. If you have anything to say - please tell!enCommunityServer 2008 SP2 (Build: 31104.93)https://archivedforum.beoworld.org:443/forums/thread/55024.aspxSun, 14 Oct 2007 00:42:15 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:55024Christian0https://archivedforum.beoworld.org:443/forums/thread/55024.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=55024<p>Joe is right.</p><p>Four pins is for speaker link, and is a predessor for power link. The two extra pins are for display data.</p><p>Three pins is for master control link, with one extra pin is for data and one for power.</p><p>The reason that speaker link has two extra pins compared to MCL, is that you have to deliver data to both speakers, whereas the MCL carries all infomation incl. sound in one cable, and thereby only requires one combined set of data leeds.</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/55018.aspxSat, 13 Oct 2007 22:36:59 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:55018Joe0https://archivedforum.beoworld.org:443/forums/thread/55018.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=55018<p>I think, but not positive, that the extra pin was made for the Pentas. They had a display that gave the volume and other info like bass and treble. Maybe someone else can add more.</p><p>&nbsp;</p><p>Joe&nbsp;</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/55014.aspxSat, 13 Oct 2007 21:04:40 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:55014Frank Rizzo0https://archivedforum.beoworld.org:443/forums/thread/55014.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=55014<p><span id="vidDescRemain" style="display:inline;"></span></p><p><span style="display:inline;">&nbsp;Okay....I may be slow and should be on the short bus....but the more I look at MCL the more I really don&#39;t understand...</span></p><p><span style="display:inline;">Looking at the below pic off a 9500...... Why does the speakers 1 output have 4 leads and the Speakers 2 (used for MCL) only have 3 connections......this makes no sense to me??</span></p><p><span style="display:inline;"><a href="http://www.snappymgr.com/images/items/june07/250127720/250127720-17.jpg" target="_blank"><img border="1" height="304" src="http://www.snappymgr.com/images/items/june07/250127720/250127720-17.jpg" width="313" /></a></span></p><div style="clear:both;"></div>