tag:blogger.com,1999:blog-6847048658257278783.post2067174709412835457..comments2024-03-13T04:13:52.242+00:00Comments on Guitar FX Layouts: Ampeg ScramblerIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger43125tag:blogger.com,1999:blog-6847048658257278783.post-31248208055828861192021-09-29T03:37:51.577+01:002021-09-29T03:37:51.577+01:00What can I sub for the 4m7?
What can I sub for the 4m7?<br />fuzzkarlhttps://www.blogger.com/profile/11102260580113515911noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-20382584822683502852020-06-02T11:12:34.924+01:002020-06-02T11:12:34.924+01:00Check cuts, and for solder bridges. Then check val...Check cuts, and for solder bridges. Then check values of resistors connected to Q1. Then check you are useing the correct type of transistor, with the legs the right way around. If that doesn't find an issue, then you have to consider that the transistor is possibly not functioning. I usually socket them so I can switch them out easily. Radical CJhttps://www.blogger.com/profile/18052100121557037653noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-90729236344416948002020-05-25T04:13:14.419+01:002020-05-25T04:13:14.419+01:00Ever figure out your problem? I get no output past...Ever figure out your problem? I get no output past Q1.Phonetaphttps://www.blogger.com/profile/06649687460421328794noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-85469169502425512132020-05-25T03:43:49.575+01:002020-05-25T03:43:49.575+01:00I built 2 of these, and can't get any output t...I built 2 of these, and can't get any output through on either one. I tried to signal probe, it seems like output stops at the Q1 Base. I get output when switched off, but nothing when on. Any ideas what to try?Phonetaphttps://www.blogger.com/profile/06649687460421328794noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-45730725373384919342016-11-30T11:02:06.604+00:002016-11-30T11:02:06.604+00:00Should also add - the loss in treble is so severe ...Should also add - the loss in treble is so severe that when playing an open high e or high b string virtually no sound is created through the pedal. Noobienoobiehttps://www.blogger.com/profile/00323103580213415496noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-57714013881051462362016-11-30T10:56:14.126+00:002016-11-30T10:56:14.126+00:00Have built this one twice now and consistently get...Have built this one twice now and consistently get a problem where the octave effect is nice and pronounced but the fuzz sound seems lacking in prominence and in treble... Have tried combinations of transistors as discussed in this thread but the bc517 in 1,3,4 and either 2n3904 in q2 seems to give the least worst fuzz. Any thoughts?Noobienoobiehttps://www.blogger.com/profile/00323103580213415496noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-7957118629968000082016-06-01T23:53:06.346+01:002016-06-01T23:53:06.346+01:00hey man. first off welcome. the LED is part of wha...hey man. first off welcome. the LED is part of what's called offboard wiring, and at the top of the page there's a tap labeled "offboard." you'll find how to wire the switch with the LED indicator there. here's the address if you just want to copy and paste.<br /><br />http://tagboardeffects.blogspot.com/2012/02/offboard-wiring.htmlZachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-45450186170775028422016-06-01T15:01:31.904+01:002016-06-01T15:01:31.904+01:00if i wanted to add an led where would i put the 2k...if i wanted to add an led where would i put the 2k2 resistor and the wire? sorry new at this but addicted!Anonymoushttps://www.blogger.com/profile/12461609125880780223noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-87779879956611257172016-02-15T05:26:39.407+00:002016-02-15T05:26:39.407+00:00This comment has been removed by the author.Elf Hands Customshttps://www.blogger.com/profile/13205978341945573664noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-49990716159246179912015-06-14T05:31:03.186+01:002015-06-14T05:31:03.186+01:00Thanks ;)Thanks ;)Anonymoushttps://www.blogger.com/profile/05074808768812317716noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19898757715179232312015-06-11T09:18:16.869+01:002015-06-11T09:18:16.869+01:00Yeah totally, lug 2 of your new volume pot goes to...Yeah totally, lug 2 of your new volume pot goes to your footswitch (you can consider this 'effect out').<br /><br />It's blending between full fuzz volume on the 3rd lug and nothing (ground) on the 1st lug. Anonymoushttps://www.blogger.com/profile/06201678011261105677noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-90380546698427938582015-06-11T07:36:30.415+01:002015-06-11T07:36:30.415+01:00You mean that blend 3 would be the fuzzy signal th...You mean that blend 3 would be the fuzzy signal that goes to a regular 100k volume pot, which lug 2 would go straight to the footswitch, right¿Anonymoushttps://www.blogger.com/profile/05074808768812317716noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-67115484456471335742015-06-10T09:54:20.438+01:002015-06-10T09:54:20.438+01:00Hmm I think just take Blend 3 to the 3rd lug of a ...Hmm I think just take Blend 3 to the 3rd lug of a 100K pot, 1st lug to ground, and 2nd lug is your output.Anonymoushttps://www.blogger.com/profile/06201678011261105677noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-50580720851945666102015-06-10T07:58:05.844+01:002015-06-10T07:58:05.844+01:00In the case of the blend pot doing something else ...In the case of the blend pot doing something else apart from blending 2 signals, I dont find any use for it since I just want an all the way fuzz. Is there any way of disregard of it¿, (the volume control seems interesting though),Anonymoushttps://www.blogger.com/profile/05074808768812317716noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-65150652080644223002015-05-18T22:38:29.027+01:002015-05-18T22:38:29.027+01:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/12675408339771878245noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-27333117732042661612015-04-14T23:05:07.195+01:002015-04-14T23:05:07.195+01:00This comment has been removed by the author.Anonymoushttps://www.blogger.com/profile/12675408339771878245noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-76394565663854346912015-04-14T22:39:46.551+01:002015-04-14T22:39:46.551+01:00Hi, mine waiting for the box. Thanks John for the ...Hi, mine waiting for the box. Thanks John for the volume control. I used 3904 (thanks again John). I tried with 2n5088, but it was too low sustain. For q1, 3, 4 I used BC517 (for me the best, total massacre :). I tried with the 3906, but it was too farty. Another thing I did, was to remove the diodes D4 and D5, maybe I'll add them to the switch. Now that's a fucking monster :) works great with my precisionbass and also Stratocaster. <br />IvIark thanks, and maybe you can tag it as a ampeg :)<br />Sorry for my english.<br />Anonymoushttps://www.blogger.com/profile/12675408339771878245noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-69920827935681265552015-01-24T09:11:04.183+00:002015-01-24T09:11:04.183+00:00I think the 100pf cap is to roll off some high end...I think the 100pf cap is to roll off some high end, and I think the 4M7 is for pop reduction. Not actually sure tho.Anonymoushttps://www.blogger.com/profile/06201678011261105677noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-74278908942509604182015-01-24T07:30:21.798+00:002015-01-24T07:30:21.798+00:00Is the 100p and the 4M7 from input to ground to he...Is the 100p and the 4M7 from input to ground to help kill RFI?tom khttps://www.blogger.com/profile/00679126450562718114noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-17421817501378569132014-10-15T19:32:45.039+01:002014-10-15T19:32:45.039+01:00I use 2n5306 but in to-92f case. and I ve found mu...I use 2n5306 but in to-92f case. and I ve found much maniers for pinouts. I have BC169c for Q2. I think the trouble must be there. vaxirehttps://www.blogger.com/profile/09895031674688647159noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-53669853107732010692014-10-15T15:49:20.384+01:002014-10-15T15:49:20.384+01:00Correct. Lug 2 of the blend control should be conn...Correct. Lug 2 of the blend control should be connected to the board, to lug 3 of the volume pot. Lug 2 of the volume pot goes to the stomp switch, and lug 1 of the volume pot goes to ground. If that's how you have it you need to start debugging. Check the voltages at each of your transistors, and make sure one is not bad. Check for cold solder joints, and solder bridges between the tracks. Zachhttps://www.blogger.com/profile/00044917566185720896noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-72497740862061706362014-10-15T12:13:00.126+01:002014-10-15T12:13:00.126+01:00Hello, I do not understand how to add volume contr...Hello, I do not understand how to add volume control. I have no sound. I connected "blend2" from the board to blend pot lug2 and from there to the volume lug 3. Vol2 to output (output from the footswitch) and Vol 1 to ground. Is this correct?vaxirehttps://www.blogger.com/profile/09895031674688647159noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-81434958749708819402014-06-16T10:33:06.944+01:002014-06-16T10:33:06.944+01:00Fast! Thank you very much! I wonder if the sympton...Fast! Thank you very much! I wonder if the sympton you are describing is the famous ampeg scrambler volume drop? Or is it still below unity? Zombie11https://www.blogger.com/profile/03292363061955660728noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-29462923759237665802014-06-15T18:48:28.594+01:002014-06-15T18:48:28.594+01:00http://johnkvintageguitars.homestead.com/Effects/F...http://johnkvintageguitars.homestead.com/Effects/Fuzz-ODs/AmpegScrambler/ScramblerBlendandVolume.pngjohnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-64367673579758795322014-06-15T13:20:45.351+01:002014-06-15T13:20:45.351+01:00John can you explain how the wiring is done with t...John can you explain how the wiring is done with the stacked 100K? I'd love to build this using your solutionZombie11https://www.blogger.com/profile/03292363061955660728noreply@blogger.com