tag:blogger.com,1999:blog-6847048658257278783.post5222952505822515969..comments2024-03-27T15:26:01.893+00:00Comments on Guitar FX Layouts: Really Simple Transistor CompressorIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-6847048658257278783.post-38954054158292845812020-02-28T17:59:12.121+00:002020-02-28T17:59:12.121+00:00Put this together, used a BC559B for the PNP and B...Put this together, used a BC559B for the PNP and BC547C for the NPN which have similar specs to the 213 and 183 and I have a unit that is sooooo noisy it's unusable. For the life of me, cannot find the problem.<br />Grinding Teeth Distrohttps://www.blogger.com/profile/12773263933508206785noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-42122346360644741812017-04-20T16:50:49.945+01:002017-04-20T16:50:49.945+01:00IS it possible to add a compress control to this?IS it possible to add a compress control to this?Anonymoushttps://www.blogger.com/profile/04957963156064103248noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-68526682909338246262016-01-27T21:01:20.471+00:002016-01-27T21:01:20.471+00:00Hi there
Is there any chance to get some audio or...Hi there<br /><br />Is there any chance to get some audio or video clips for that build? I can't just build it to see if I like it unfortunately :\Anonymoushttps://www.blogger.com/profile/05576591843669425062noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-44425108391502412862016-01-27T21:00:26.714+00:002016-01-27T21:00:26.714+00:00Hi there
Is there any chance to get some audio or...Hi there<br /><br />Is there any chance to get some audio or video clips for that build? I can't just build it to see if I like it unfortunately :\Anonymoushttps://www.blogger.com/profile/05576591843669425062noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22562300359699807222014-05-28T23:18:56.097+01:002014-05-28T23:18:56.097+01:00Well, a full 11 months after the previous post on ...Well, a full 11 months after the previous post on the thread might be a bit tardy!<br /><br />I just pulled the collector from the board and soldered a flying wire between the it and an empty hole on the bottom row, though looking a bit harder at the layout, I now see I could have done a bit of gardening with the jumpers between rows 1, 2 and 3, left Q4 in place and put my flying wire under the stripboard.<br /><br />Still, I now have a nice-sounding (if a bit rats-nest-looking) compressor: many thanks for your layout.Strewel Petersonhttps://www.blogger.com/profile/06861801665573308875noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-67121953515578105382014-05-28T22:03:33.553+01:002014-05-28T22:03:33.553+01:00Don't know what you mean by late, but your inp...Don't know what you mean by late, but your input is very welcome! True, Q4 collector was connected wrong. I updated that accordingly. I also tweaked the bias for the PNP to achieve higher input impedance as Mictester notes on FSB thread.<br />http://freestompboxes.org/viewtopic.php?f=28&t=8245<br /><br />How did you fix the +9V to Q3 collector? My fix on the layout is rather crude, but it is the only difference against the original, faulty one.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19379016961150868422014-05-28T20:26:19.105+01:002014-05-28T20:26:19.105+01:00Probably a bit late to comment, but I think the co...Probably a bit late to comment, but I think the collector on Q4 should go to +9v, rather than ground. <br /><br />I didn't have the correct transistors, so used 2n2222s. With a 2n2907a as Q1 it sounded horrible - substituting a 2222 made a huge difference, so maybe ignore the layout and for an NPN here (there's some discussion along these lines at Freestompboxes - search for the thread on "Simple Transistor Compressor").Strewel Petersonhttps://www.blogger.com/profile/06861801665573308875noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-54573891887107258522014-02-05T04:03:15.885+00:002014-02-05T04:03:15.885+00:00This comment has been removed by the author.jaredmcohenhttps://www.blogger.com/profile/14303382501202040317noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-3707420779177026672014-02-05T04:02:58.793+00:002014-02-05T04:02:58.793+00:00This comment has been removed by the author.jaredmcohenhttps://www.blogger.com/profile/14303382501202040317noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-59335218224962703772013-07-02T16:52:26.767+01:002013-07-02T16:52:26.767+01:00anyone built this thing yet?anyone built this thing yet?marcusplhttps://www.blogger.com/profile/00564986681082711629noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-91411025976478378732013-01-29T22:41:53.095+00:002013-01-29T22:41:53.095+00:00No controls? Low threshold, low ratio I suspect?No controls? Low threshold, low ratio I suspect?Axel Gschaiderhttps://www.blogger.com/profile/09746612035839165801noreply@blogger.com