<div dir="ltr">The 4035 is a good sounding ladder filter.  I have the 4034 in my ProSoloist, same circuit except for different input impedance to match the P/S.<div><br></div><div><a href="https://vintagetechnologyarchive.com/synth/arp/4035-filter/">https://vintagetechnologyarchive.com/synth/arp/4035-filter/</a><br></div><div><br></div><div>MC</div></div><br><div class="gmail_quote gmail_quote_container"><div dir="ltr" class="gmail_attr">On Fri, May 15, 2026 at 9:42 AM Jean-Pierre Desrochers via Synth-diy <<a href="mailto:synth-diy@synth-diy.org">synth-diy@synth-diy.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex"><div class="msg-2506074938610453712"><div lang="FR-CA" style="overflow-wrap: break-word;"><div class="m_-2506074938610453712WordSection1"><p class="MsoNormal"><span lang="EN-CA">Hi list,<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-CA">I’m thinking about making some ARP’s VCF modules replicas for sale.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA">All the same components and PCB arrangements.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA">Completely the same as the originals..<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA">But I’m wondering which one(s) would be the best candidate(s)<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA">or should I say ‘looked for’. So far the 4012 (Moog lader pursuit)<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA">seems to be a good one, and the 4075 (Odyssey, Avatar)<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA">could also be good ones.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA">I know this is a question of taste but<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA">let me hear what are your thoughts.<u></u><u></u></span></p><p class="MsoNormal"><span lang="EN-CA"><u></u> <u></u></span></p><p class="MsoNormal"><span lang="EN-CA"><img width="366" height="390" style="width: 3.8125in; height: 4.0625in;" id="m_-2506074938610453712Image_x0020_4" src="cid:ii_19e2c1a878a8546ed1"></span><span lang="EN-CA"><u></u><u></u></span></p><p class="MsoNormal"><img width="862" height="585" style="width: 8.9791in; height: 6.0937in;" id="m_-2506074938610453712Image_x0020_1" src="cid:ii_19e2c1a878a935e6e2"><u></u><u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><u></u> <u></u></p><p class="MsoNormal"><img width="871" height="596" style="width: 9.0729in; height: 6.2083in;" id="m_-2506074938610453712Image_x0020_2" src="cid:ii_19e2c1a878aa175ef3"><u></u><u></u></p><p class="MsoNormal"><span lang="EN-CA"><img width="349" height="389" style="width: 3.6354in; height: 4.052in;" id="m_-2506074938610453712Image_x0020_3" src="cid:ii_19e2c1a878aaf8d704"></span><u></u><u></u></p></div></div>________________________________________________________<br>
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