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/5447.aspxSun, 22 Apr 2007 23:38:49 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:5447Kevin0https://archivedforum.beoworld.org:443/forums/thread/5447.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=5447<img src="http://forum.beoworld.org/emoticons/emotion-21.gif" alt="Yes" />Thanks Keith<img src="http://forum.beoworld.org/emoticons/emotion-11.gif" alt="Cool" /><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/5405.aspxSun, 22 Apr 2007 16:18:26 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:5405Keith Saunders0https://archivedforum.beoworld.org:443/forums/thread/5405.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=5405<p>Kevin,</p><p>I think the following is what you are looking for:-</p><p><img align="middle" alt="Circuit diagram" height="578" src="http://www.little-ann.co.uk/PhotoDownload/BL4000inputamp.jpg" style="width:958px;height:578px;" title="Circuit diagram" width="958" /></p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/5161.aspxSun, 22 Apr 2007 06:12:39 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:5161Kevin0https://archivedforum.beoworld.org:443/forums/thread/5161.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=5161<p>Unfortunately this manual is of the era where you change the pcb and the wiring diagram is little more the the block diagram.</p><p>What I&#39;m most interested in is what B&amp;O do with the input signal. The speaker can take powerlink and&nbsp; line. From the manual I am assuming they pre amp the powerlink signal to line level. This is the part of the circuit I&#39;m most interested in. They seem to use the LF353 as pre amp on the older gear.</p><p>Any help on the diagram would be much appreciated as would any comments on simple chip based pre amps.</p><p>Thanks,</p><p>Kevin&nbsp;</p><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/4646.aspxSat, 21 Apr 2007 01:42:13 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:4646Kevin0https://archivedforum.beoworld.org:443/forums/thread/4646.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=4646Many thanks Peter<img src="http://forum.beoworld.org/emoticons/emotion-21.gif" alt="Yes" /><img src="http://forum.beoworld.org/emoticons/emotion-11.gif" alt="Cool" /><br /><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/4465.aspxFri, 20 Apr 2007 12:58:32 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:4465Peter0https://archivedforum.beoworld.org:443/forums/thread/4465.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=4465Put the service manual for the Beolab 4000 speaker on site - Mk2 I am afraid!<br /><div style="clear:both;"></div>https://archivedforum.beoworld.org:443/forums/thread/4440.aspxFri, 20 Apr 2007 12:26:21 GMT41a2a90c-3a1e-4bd3-b144-3883695a7f38:4440Kevin0https://archivedforum.beoworld.org:443/forums/thread/4440.aspxhttps://archivedforum.beoworld.org:443/forums/commentrss.aspx?SectionID=13&PostID=4440<p>Hi,</p><p>does anyone have the wiring diagram for Beolab 4000 type speaker or any of the Mk1 powerlink cable speakers?</p><p>Thanks in advance,</p><p>Kevin&nbsp;</p><div style="clear:both;"></div>