<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Ah yes, I forgot about the system controller - yes, I have that one too, thanks.<div class=""><br class=""></div><div class="">The most interesting part of that is the "standard module interface", which consists of a peripheral interface chip which can read (up to) 8 buttons and 8 pots, and write to 8 LEDs and 8 outputs, which can be either CVs or MDACs. It's pretty flexible, whilst staying relatively simple.<br class=""><div class=""><div class=""><br class="Apple-interchange-newline">
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<div><br class=""><blockquote type="cite" class=""><div class="">On 12 Sep 2022, at 03:55, Nicolás Dinapoli Fariña <<a href="mailto:n.dinapoli@ymail.com" class="">n.dinapoli@ymail.com</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--><div class=""><div class="ydpf2b792c5yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:13px;"><div class=""><div dir="ltr" data-setdir="false" class="">I have the same ones as you, plus this one:</div><div dir="ltr" data-setdir="false" class=""><br class=""></div><div dir="ltr" data-setdir="false" class=""><a href="https://drive.google.com/file/d/1Nfupell-b033EFK7mcszY_GI9oRoAobl/view?usp=sharing" rel="nofollow" target="_blank" class="enhancr_card_3284133343">SEQUENTIAL_500-PRO-FX_SERVICE_MANUAL.pdf</a><br class=""></div><div class=""><br class=""></div><div id="ydpf805ac06enhancr_card_3284133343" class="ydpf805ac06ymail-preserve-class ydpf805ac06yahoo-link-enhancr-card ydpf805ac06ymail-preserve-style" style="max-width:400px;font-family:YahooSans, Helvetica Neue, Segoe UI, Helvetica, Arial, sans-serif" data-url="https://drive.google.com/file/d/1Nfupell-b033EFK7mcszY_GI9oRoAobl/view?usp=sharing" data-type="YENHANCER" data-size="MEDIUM" contenteditable="false"><a href="https://drive.google.com/file/d/1Nfupell-b033EFK7mcszY_GI9oRoAobl/view?usp=sharing" style="text-decoration: none !important;" class="ydpf805ac06yahoo-enhancr-cardlink" rel="nofollow" target="_blank"><table border="0" class="ydpf805ac06yahoo-ignore-table ydpf805ac06card-wrapper" cellpadding="0" cellspacing="0" style="max-width:400px"><tbody class=""><tr class=""><td width="400" class=""><table border="0" class="ydpf805ac06yahoo-ignore-table ydpf805ac06card" cellpadding="0" cellspacing="0" width="100%" style="max-width:400px;border-width:1px;border-style:solid;border-color:rgb(224, 228, 233);border-radius:2px"><tbody class=""><tr class=""><td class="ydpf805ac06card-primary-image-cell" background="https://s.yimg.com/lo/api/res/1.2/mc_MZmqXHCkl0c0qeamCcQ--~A/Zmk9ZmlsbDt3PTQwMDtoPTIwMDthcHBpZD1pZXh0cmFjdA--/https://lh5.googleusercontent.com/fsM-YfP8entAo9k1loeQYGQ_BKHubzfDsmnFdQpydlSRat5ehieR_7xflXc8v_WXEOE=w1200-h630-p.cf.jpg" bgcolor="#000000" valign="top" height="175" style="background-color: rgb(0, 0, 0); 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El domingo, 11 de septiembre de 2022, 08:32:35 ART, Tom Wiltshire <<a href="mailto:tom@electricdruid.net" class="">tom@electricdruid.net</a>> escribió:
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<div class=""><div dir="ltr" class="">Hi All,<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">There are schematics/preliminary service manuals floating around for *most* of the modules of the Sequential Pro-FX programmable rack effects system from the early 1980's, but information on certain modules is extremely sketchy. Here's a review, if you're curious:<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""> <a href="https://www.muzines.co.uk/articles/sci-pro-fx-500/6152" rel="nofollow" target="_blank" class="">https://www.muzines.co.uk/articles/sci-pro-fx-500/6152</a><br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">Does anyone have schematics or more information on these, please?:<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""> 510 Phaser<br class=""></div><div dir="ltr" class=""> <br class=""></div><div dir="ltr" class=""> 518 Reverb (spring tank mounted in a 1U 19" rack)<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""> 522 Flanger / Chorus<br class=""></div><div dir="ltr" class=""> <br class=""></div><div dir="ltr" class="">I've got info about these others:<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""> 512 Distortion<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""> 514 4x2 Mixer<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""> 516 Parametric EQ<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""> 520 Transpose / Sync<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class=""> 524 Digital Delay <br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">They're interesting designs because they're very much at that transitional period between fully-analog and more-digital. There's quite heavy use of the 7524 8-bit MDAC for digital level control (and more), but there are also lots of examples of CA3280's doing a similar job, and filtering provided by CEM3320s and so on. It's a right old mixture!!<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">Thanks for any clues or help you can offer,<br class=""></div><div dir="ltr" class=""><br class=""></div><div dir="ltr" class="">Tom<br class=""></div><div dir="ltr" class="">_______________________________________________<br class=""></div><div dir="ltr" class="">Synth-diy mailing list<br class=""></div><div dir="ltr" class=""><a href="mailto:Synth-diy@synth-diy.org" rel="nofollow" target="_blank" class="">Synth-diy@synth-diy.org</a><br class=""></div><div dir="ltr" class=""><a href="http://synth-diy.org/mailman/listinfo/synth-diy" rel="nofollow" target="_blank" class="">http://synth-diy.org/mailman/listinfo/synth-diy</a><br class=""></div><div dir="ltr" class="">Selling or trading? Use <a href="mailto:marketplace@synth-diy.org" rel="nofollow" target="_blank" class="">marketplace@synth-diy.org</a><br class=""></div></div>
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