tag:blogger.com,1999:blog-6847048658257278783.post99618335250989130..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: Marshall 1992 Super BassIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger13125tag:blogger.com,1999:blog-6847048658257278783.post-52130766768230623152023-04-01T10:48:00.664+01:002023-04-01T10:48:00.664+01:00Hi. Would it be possible to see the schematic this...Hi. Would it be possible to see the schematic this is based on please? It'll help with debugging. CheersSWhttps://www.blogger.com/profile/04012077863633210810noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-31407591755520758082023-04-01T08:23:41.939+01:002023-04-01T08:23:41.939+01:00Considering even the tolerance of the caps, I gues...Considering even the tolerance of the caps, I guess there's no notable differenceElijah-Baleyhttps://www.blogger.com/profile/16374916649117645180noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-28498180637050434622023-03-30T09:22:57.751+01:002023-03-30T09:22:57.751+01:00Hi, i can't find any 320 uF capacitors in my u...Hi, i can't find any 320 uF capacitors in my usual suppliers. A 330 uF will make a notable difference?Jack_82https://www.blogger.com/profile/09839004080121890708noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19957359817015051252020-12-10T08:12:29.342+00:002020-12-10T08:12:29.342+00:00In preparing this build I'm looking at the top...In preparing this build I'm looking at the top 2 rows, with the trimmers on them. Looks like it's 2 rows of +9V, isn't it possible to skip the cuts in the second row and make a single link between them? Or am I missing something?Pieterhttps://www.blogger.com/profile/15907867003677162584noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-54357758028149147392020-11-03T11:40:51.055+00:002020-11-03T11:40:51.055+00:00It kinda works, but my treble knob acts not only a...It kinda works, but my treble knob acts not only as a treble, but seems to cut the volume quite significantly when turned up. Any ideas what might case this? Happens on both channels.Duncanhttps://www.blogger.com/profile/09466655911744304660noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79424613296208955812020-07-27T23:25:11.782+01:002020-07-27T23:25:11.782+01:00Using a high voltage capacitor should have no effe...Using a high voltage capacitor should have no effect on the circuit. You definitely have a build error or multiples. I would post in the debugging section with pics and description of what’s going on. Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-9092459518843894712020-07-27T09:06:16.687+01:002020-07-27T09:06:16.687+01:00Having a bit of trouble with this...the gain stage...Having a bit of trouble with this...the gain stages don't work, but when there is no power applied, the eq section works ok. I ordered from mouser and used HV caps for the most part - would this have an effect on the gain stages?Duncanhttps://www.blogger.com/profile/09466655911744304660noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-67331804987090436372020-07-05T00:42:30.244+01:002020-07-05T00:42:30.244+01:00Yes. I’ve already done that for one of my mini amp...Yes. I’ve already done that for one of my mini amp builds. Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-8295652112210666992020-07-04T22:10:22.234+01:002020-07-04T22:10:22.234+01:00one other question - im considering running this i...one other question - im considering running this into one of those pwm class d power amp boards from ebay to make a full amp with this as the preamp - can i run this circuit at 24v assuming i by correctly rated semiconductors and caps? Duncanhttps://www.blogger.com/profile/09466655911744304660noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-77490435361241706492020-07-04T02:08:47.720+01:002020-07-04T02:08:47.720+01:00sure - mind the pinout - the gain will be differen...sure - mind the pinout - the gain will be different . i went with smt bought daughter boards . <br />petey twofingerhttps://www.blogger.com/profile/06740368817236312111noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-24115564935541530692020-06-25T08:18:45.036+01:002020-06-25T08:18:45.036+01:00Is it possible to use a different Jfet for this? I...Is it possible to use a different Jfet for this? I'm thinking a 5457 or something? J201s are becoming hard to find in UK for a reasonable price!Duncanhttps://www.blogger.com/profile/09466655911744304660noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-41674565279965779142020-06-18T04:16:20.948+01:002020-06-18T04:16:20.948+01:00it seems the treble and mids are mixed up . i am h...it seems the treble and mids are mixed up . i am hearing my mid knob functioning as a treble knob and vice versa . the bass channel has a bit of hum and is a bit quieter . i have a lot of long leads and its not boxed up so ... ignore me . the treble channel sounds fantastic . its not exactly high gain though . its clean . thanks for this layout . pairing it with a spring tank / driver ciruit and a class d tpa3116d2 mono board.petey twofingerhttps://www.blogger.com/profile/06740368817236312111noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-49327197748857249822019-02-21T01:48:31.216+00:002019-02-21T01:48:31.216+00:00I marked it verified because I've built the th...I marked it verified because I've built the this layout for a mini amp and it sounds great and spot on.Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.com