<!DOCTYPE html><html><head><title></title></head><body><div>Rod Elliot has some compressor/limiter circuits meant for spring reverbs that might be useful: <a href="https://sound-au.com/articles/reverb.htm#s5">https://sound-au.com/articles/reverb.htm#s5</a><br></div><div><br></div><div>Coriander</div><div><br></div><div>On Fri, Apr 3, 2026, at 07:53, mark verbos via Synth-diy wrote:</div><blockquote type="cite" id="qt" style="overflow-wrap:break-word;"><div>Looks like Langomes is unresponsive. I can’t help noticing the similarity when I put a Urei BL-40 schematic next to it. The “Peak Program Amplifier” which legend says is 1176-ish (sorta I have 2 units here). It’s just the sidechain, in the Urei’s case that’s a dual opamp and a couple NPNs, some passives. </div><div><br></div><div><div>Mark</div><div><br></div><div><br></div><div><br></div><div><br></div><div><div><br></div><div><div><br></div><blockquote type="cite"><div>On Apr 3, 2026, at 12:41, Tim Cockram via Synth-diy <synth-diy@synth-diy.org> wrote:</div><div><br></div><div><div dir="ltr"><div>Hi,</div><div><br></div><div>Have you tried Iangomes here <a href="https://gearspace.com/board/geekzone/1312463-orban-111b-limiter-module.html">https://gearspace.com/board/geekzone/1312463-orban-111b-limiter-module.html</a> ?</div><div><br></div><div>tc</div></div><div id="qt-DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><div><br></div><table style="border-top-width:1px;border-top-style:solid;border-top-color:rgb(211, 212, 222);"><tbody><tr><td style="width:55px;padding-top:13px;"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank"><img src="https://s-install.avcdn.net/ipm/preview/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="" width="46" height="29" style="width:46px;height:29px;"></a><br></td><td style="width:470px;padding-top:12px;color:rgb(65, 66, 78);font-size:13px;font-family:Arial, Helvetica, sans-serif;line-height:18px;">Virus-free.<a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail" target="_blank" style="color:rgb(68, 83, 234);">www.avast.com</a></td></tr></tbody></table><div><a href="x-msg://1/#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"></a><br></div></div><div><br></div><div class="qt-gmail_quote qt-gmail_quote_container"><div dir="ltr" class="qt-gmail_attr">On Thu, 2 Apr 2026 at 15:56, James Coplin <<a href="mailto:james@ticalun.net">james@ticalun.net</a>> wrote:</div><blockquote class="qt-gmail_quote" style="margin-top:0px;margin-right:0px;margin-bottom:0px;margin-left:0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204, 204, 204);padding-left:1ex;"><div dir="auto"><div dir="auto"><br></div><div dir="auto">I have an Orban 111b here that I loved but the proprietary and epoxy potted limiter module is bad and I've given up hope of someone figuring it out or being able to de-pot it. </div><div dir="auto"><br></div><div dir="auto">So, I was wondering about just putting a different compressor / limiter circuit in there just to have a working spring reverb even if it will no longer be the same. Anyone have suggestions for a stereo compressor / limiter circuit that might suitable? Because it also has impossible to find concentric pots that need replacing I was going to make a new front panel in any case. </div><div dir="auto"><br></div><div dir="auto">James R Coplin</div></div><div>________________________________________________________</div><div> This is the Synth-diy mailing list</div><div> Submit email to: <a href="mailto:Synth-diy@synth-diy.org" target="_blank">Synth-diy@synth-diy.org</a></div><div> View archive at: <a href="https://synth-diy.org/pipermail/synth-diy/" rel="noreferrer" target="_blank">https://synth-diy.org/pipermail/synth-diy/</a></div><div> Check your settings at: <a href="https://synth-diy.org/mailman/listinfo/synth-diy" rel="noreferrer" target="_blank">https://synth-diy.org/mailman/listinfo/synth-diy</a></div><div> Selling or trading? Use <a href="mailto:marketplace@synth-diy.org" target="_blank">marketplace@synth-diy.org</a></div></blockquote></div><div>________________________________________________________</div><div>This is the Synth-diy mailing list</div><div>Submit email to: Synth-diy@synth-diy.org</div><div>View archive at: https://synth-diy.org/pipermail/synth-diy/</div><div>Check your settings at: https://synth-diy.org/mailman/listinfo/synth-diy</div><div>Selling or trading? Use marketplace@synth-diy.org</div></div></blockquote></div></div></div><div>________________________________________________________</div><div>This is the Synth-diy mailing list</div><div>Submit email to: <a href="mailto:Synth-diy@synth-diy.org">Synth-diy@synth-diy.org</a></div><div>View archive at: <a href="https://synth-diy.org/pipermail/synth-diy/">https://synth-diy.org/pipermail/synth-diy/</a></div><div>Check your settings at: <a href="https://synth-diy.org/mailman/listinfo/synth-diy">https://synth-diy.org/mailman/listinfo/synth-diy</a></div><div>Selling or trading? Use <a href="mailto:marketplace@synth-diy.org">marketplace@synth-diy.org</a></div><div><br></div></blockquote><div><br></div></body></html>