tag:blogger.com,1999:blog-6847048658257278783.post8194341991149528368..comments2024-03-29T01:36:12.851+00:00Comments on Guitar FX Layouts: Really Cheap CompressorIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger61125tag:blogger.com,1999:blog-6847048658257278783.post-43422401637415941262023-12-21T10:23:54.984+00:002023-12-21T10:23:54.984+00:00Very nice schematic!
Can it be a good idea and pos...Very nice schematic!<br />Can it be a good idea and possible to use an opto-coupler, or maybe two, to replace the 2 LEDs and the LDR? What do you think experts? Boogyhttps://www.blogger.com/profile/14406920615781210386noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-2619882302533642322019-12-12T02:33:25.404+00:002019-12-12T02:33:25.404+00:00Have to test in the dark.. if the LDR gets any lig...Have to test in the dark.. if the LDR gets any light it cuts the circuit. That is by design. LED's won't work if there is any lightTedShttps://www.blogger.com/profile/02568218407570938413noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-5395102431552597032019-12-12T02:32:10.572+00:002019-12-12T02:32:10.572+00:00I added the 470pF cap directly to the 220K input r...I added the 470pF cap directly to the 220K input resistor.. nothing on the level... and the circuit came alive more.. it was, well, brighter.. which makes it a bit more 'transparent' and harder to tell if it is on or not.. which makes it better!TedShttps://www.blogger.com/profile/02568218407570938413noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-11130641903271944842019-06-23T03:01:50.575+01:002019-06-23T03:01:50.575+01:00I'm struggling a bit with this one... The LDR ...I'm struggling a bit with this one... The LDR seem to be working fine - I get a clean, pretty loud signal when the effect is on. If I unscrew the bottom and let a bit of outside light in, the output drops. If I take the bottom of completely, the output drops to almost none. I can't get the LED:s to work though. If I understand correctly, the louder the signal going into the circuit is, the brighter they're suppose to shine? They wont light up at all... What could be the cause of that? <br /><br />Reading the description, this sounds like a pedal I would be into. So I would love to get it working.Fredrik Fenckehttps://www.blogger.com/profile/14795658205902585587noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-52603806374925473742018-09-12T04:41:54.468+01:002018-09-12T04:41:54.468+01:00They go to the lug of the pot that they say (e.g. ...They go to the lug of the pot that they say (e.g. Sus 3 goes to the 3rd one for that pot)jonfannhttps://www.blogger.com/profile/08453593726811270391noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-16726186355136405492018-09-12T04:39:49.644+01:002018-09-12T04:39:49.644+01:00I just built this and it is crazy awesome. I have...I just built this and it is crazy awesome. I have some eBay LDRs and I heatshrinked em with the LEDs, swapped the 10k for a 20k and can get some nice rubber band to relatively subdued compression. Love it!jonfannhttps://www.blogger.com/profile/08453593726811270391noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-52335809492495239672018-07-30T09:20:14.086+01:002018-07-30T09:20:14.086+01:00Hi. Just wondering on the veroboard picture, the w...Hi. Just wondering on the veroboard picture, the wiring of the pots does not make sense and I can't seem to see the output wiring. Where do the level pot and Sustain pot wire too? Your help would be greatly appreciated. Cheers Adam. adamjo.comAnonymoushttps://www.blogger.com/profile/18177795143357117842noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-75723525367453736712018-01-22T23:53:05.697+00:002018-01-22T23:53:05.697+00:00Hi Fuzzy
That LDR from Farnell will work perfectl...Hi Fuzzy<br /><br />That LDR from Farnell will work perfectly. Yellow LEDs will work best with that device. Good luck with your build.<br /><br />MictesterUnknownhttps://www.blogger.com/profile/04967342323028892006noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79321397029174452122017-11-07T14:33:56.286+00:002017-11-07T14:33:56.286+00:00Guys, can I use this as a LDR (Silonex NORPS-12)? ...Guys, can I use this as a LDR (Silonex NORPS-12)? Thanks!<br /><br />http://www.farnell.com/datasheets/409710.pdf?_ga=2.114018503.1386782138.1510064473-865469531.1510064473Fuzzy Logichttps://www.blogger.com/profile/02287462354530855360noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-54037993493481150212017-04-26T08:06:21.077+01:002017-04-26T08:06:21.077+01:00How would I wire this up with a VTL5C3 vactrol? 4...How would I wire this up with a VTL5C3 vactrol? 4 leads. Thanks.koshhttps://www.blogger.com/profile/02439782238734341838noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22540461930777287402017-04-05T14:54:53.076+01:002017-04-05T14:54:53.076+01:00Amazing compressor, works really well, a quick and...Amazing compressor, works really well, a quick and easy build, couldn't recommend enough for someone looking for a cheap and simple compressor!Boba7https://www.blogger.com/profile/05006913437418283165noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-46357029731663535122016-10-04T06:14:41.494+01:002016-10-04T06:14:41.494+01:00Photos of the build process: http://www.tdpri.com/...Photos of the build process: http://www.tdpri.com/media/albums/really-cheap-compressor.1838/Andrew Wassonhttps://www.blogger.com/profile/11052627834250762267noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-37532679001822323202016-10-01T17:41:49.355+01:002016-10-01T17:41:49.355+01:00I built this earlier this week and boxed it last n...I built this earlier this week and boxed it last night in one of those Hammond boxes; the same size as an MXR Phase 90. I lucked out and had most of the parts, including a pair of flat, square green LED's and a 1M dark LDR. It works exactly as described and introduces no hiss, even with the level cranked. No clicks, pops or anything troublesome. Awesome pedal.Andrew Wassonhttps://www.blogger.com/profile/11052627834250762267noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73456041880135632282015-12-29T21:52:25.605+00:002015-12-29T21:52:25.605+00:00I figured out I have gl55 series, 16 and 28. They ...I figured out I have gl55 series, 16 and 28. They are full dark 500k and 1M respectively according to the data sheet. I'm going to use some header and try a few different color LED. Just waiting on my pots of all things .. I swear I'm just going to by like 20 lots of 10 of all the types and never wait again.. BetterOffShredhttps://www.blogger.com/profile/14915216721556964789noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-83968571075402044062015-12-29T05:00:51.925+00:002015-12-29T05:00:51.925+00:00So noob question about the LDR.. I got a big sack ...So noob question about the LDR.. I got a big sack of them off ebay and I've been testing them in a little isolation chamber I made from like 4 layers of duct tape making an envelope and just the leads stick out.. they all seem to test well over 1 meg.. is this 'Too' dark? Or is complete black OK for the test? BetterOffShredhttps://www.blogger.com/profile/14915216721556964789noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-49991608586940806042015-12-24T00:01:49.054+00:002015-12-24T00:01:49.054+00:00google is your friend
https://coastaudio.files.wor...google is your friend<br />https://coastaudio.files.wordpress.com/2013/10/schematic-really-cheap-compressor.pngjohnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-58959679964764684452015-12-23T23:44:03.413+00:002015-12-23T23:44:03.413+00:00I built the bass version, but no signs of life. A ...I built the bass version, but no signs of life. A schematic would be a huge help in terms of troubleshooting. Does anybody have one??Anonymoushttps://www.blogger.com/profile/11219963355164228612noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-35136737012700115392015-11-26T18:24:15.382+00:002015-11-26T18:24:15.382+00:00Is it possible to increase the sustain? Is it possible to increase the sustain? BigZedhttps://www.blogger.com/profile/10495671220523078248noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-32248326792375319772015-11-09T22:23:30.347+00:002015-11-09T22:23:30.347+00:00Any ideia how to increase the low end for the bass...Any ideia how to increase the low end for the bass version? <br /><br />I am using the layout with the capacitor value of 33nF and 4u7 for input and output, respectively.<br /><br />If I increase this values for 100nF and 10uF (eletrolytic) do I cause any significat change over the low frequencies?<br /><br />Thank you ! Anonymoushttps://www.blogger.com/profile/09885311400121949922noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-24702459602468117742015-10-12T15:28:45.683+01:002015-10-12T15:28:45.683+01:00Found these mods:
Bright mod:
470pF and 10nF cap...Found these mods: <br />Bright mod: <br />470pF and 10nF caps in parallel with the 220k input resistor and the level pot, respectively. Those are controlled by a switch. I added a 2k2 resistor before the output permanently. This mod was suggested by mictester, the designer of the circuit.KThttps://www.blogger.com/profile/14732737262225755598noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-53666950834428364182015-09-20T02:26:31.400+01:002015-09-20T02:26:31.400+01:00Would the regular version or the bass version be b...Would the regular version or the bass version be better for use with an acoustic guitar?Anonymoushttps://www.blogger.com/profile/12436165952174316189noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-61509771932986447802015-08-11T19:10:13.081+01:002015-08-11T19:10:13.081+01:00It is a great compressor!
I am using it with my Ba...It is a great compressor!<br />I am using it with my Bass and it is very transparent.<br /><br />It was my first compressor that I built . I choose two 5mm yellow leds and a 7mm LDR. <br /><br />Once I used the CS3 boss compressor (blue pedal), but it cut off a lot of the Bass freqencies. <br /><br />I always heard about the Ross and Dyna compressors, but I do not know the main difference and how they could be applied with the Bass. I dont know when I will build them, but until there I will be using the Really Cheap Compressor.<br /><br />Thank you !! Anonymoushttps://www.blogger.com/profile/09885311400121949922noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-80721592376273437682015-04-08T04:32:38.876+01:002015-04-08T04:32:38.876+01:00That's rad. Which one is the filter cap? B)That's rad. Which one is the filter cap? B)Anonymoushttps://www.blogger.com/profile/06201678011261105677noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-79992627445855969752015-04-08T04:12:21.443+01:002015-04-08T04:12:21.443+01:00goddamn browser burped and ate my post... fucker.....goddamn browser burped and ate my post... fucker...<br /> built one of these for my bud recently, and he smoked it... either he hit it with bad power or reverse polarity (likely) or the 47u filter cap failed... it was smoked and exploded, and when it went it popped both leds and the ne5532 chip. he needs it for a gig friday, so i told him i'd take a peek and did, and while playing with it found some intriguing results.<br />no idea what the ldr was... was (as usual with me) just a random component outta the resistor drawer... i had two bright green led's in there originally that smoked, as i discovered when i cut the home rolled vactrol open.<br />anyways, i replaced the filter with 100u (closest thing i had within reach) and used two different led's... one green, and one yellow/orange diffused one (both were the diffused "softer" looking ones) and i got a ridiculous change in the performance of the circuit... it's easily 4-5 x louder now than it was, enough where it can be used as a nice cleanish overdrive with some phenomenally quiet long sustain. unity used to be about 2:00, now it's about 8:30 or so, i dunno if anyone else will get these results, but i figured i'd share... i always prefer to have too much volume, and turn down, than not enough and try to make do myself..<br />peace out!pinksterhttps://www.blogger.com/profile/13385798043782856976noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-11590567363520078952014-04-04T02:58:05.926+01:002014-04-04T02:58:05.926+01:00Built it, sounds nice. It's a subtle comp, but...Built it, sounds nice. It's a subtle comp, but if that's what you're looking for it does the trick. Also 5mm greens and with the only LDR Tayda sells.jaredmcohenhttps://www.blogger.com/profile/14303382501202040317noreply@blogger.com