tag:blogger.com,1999:blog-6847048658257278783.post2241303568067316902..comments2024-03-28T18:53:30.726+00:00Comments on Guitar FX Layouts: Subdecay Liquid Sunshine V2IvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger41125tag:blogger.com,1999:blog-6847048658257278783.post-41367830805422146412018-12-27T17:35:25.506+00:002018-12-27T17:35:25.506+00:00(I also posted this on FSB, not sure what the chan...(I also posted this on FSB, not sure what the chances are of somebody replying either here or there, since both threads haven't been very active for two-three years...)<br /><br />Is the Q1 buffer stage supposed to have about unity gain? <br />Because I lose about 6db from gate to source, and get the corresponding symptoms (i.e., no drive to speak of except at full CW). Q1 Voltages (quiescent/no input): D 9.2V; G 0V; S 1.28V<br />On the other hand, I checked multiple times for continuity or accidental solder bridges, and can't find anything wrong; components seem ok too. I tried all four (lol) 5458s I have for Q1, same results with each of them... TLP7https://www.blogger.com/profile/01438443301981049001noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-87009307152129220332016-08-30T04:58:51.937+01:002016-08-30T04:58:51.937+01:00here's what I've found out... The trimmers...here's what I've found out... The trimmers are at about5.25v. now 3 different wall warts made three different hums, 1 like a mosquito was 2amps, one like a lower hum was 6ishamps and another made a low hum. I then powered up with my carline(chinese) multi box power thing and bang no hum ,clean as. Its not even isolated power. what do you think is going on? This is a great pedal, would it benefit with a power filter section? why amps?Tronc the cubehttps://www.blogger.com/profile/02808485577992986782noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19380017318213176142016-08-29T09:51:28.253+01:002016-08-29T09:51:28.253+01:00its still thereits still thereTronc the cubehttps://www.blogger.com/profile/02808485577992986782noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-1674540618986242172016-08-10T00:26:32.598+01:002016-08-10T00:26:32.598+01:00It's like a mosquitoIt's like a mosquitoTronc the cubehttps://www.blogger.com/profile/02808485577992986782noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-26596634804861294382016-08-09T14:49:42.117+01:002016-08-09T14:49:42.117+01:00once biased its sounds great, except the high pitc...once biased its sounds great, except the high pitched whine. Ill take picture and maybe it might be my grounding of stuff. lots of different grounding objects: bass switch, volume pot, board, etc. when q3 is taken out it gets less. treble cut switch lessens it too.Tronc the cubehttps://www.blogger.com/profile/02808485577992986782noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-64189910715173295702015-05-09T19:48:42.361+01:002015-05-09T19:48:42.361+01:00I had made a comment about using 2n5457s ans using...I had made a comment about using 2n5457s ans using this as a clean boost - but immediately after I saw a small solder bridge and fixed it, restored the 2n5458s and now this has plenty of gain.<br /><br />It just goes to show you - one little thing. And I will admit I was in a hurry to do this last night and I literally forgot to check the board after I did my cuts, and I had some cuts that I did not fully drill out. <br /><br />If yours doesn't sound right check your cuts, etc. This circuit will "work" even if you have problems. It just won't sound right.motterpaulhttps://www.blogger.com/profile/15536330842070250774noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-66116239463456182792015-05-09T19:30:46.678+01:002015-05-09T19:30:46.678+01:00This comment has been removed by the author.motterpaulhttps://www.blogger.com/profile/15536330842070250774noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-7328075455363042392012-09-14T20:03:15.990+01:002012-09-14T20:03:15.990+01:00This comment has been removed by the author.Piltdown Manhttps://www.blogger.com/profile/13069386624600054452noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-88424374491340647152012-09-11T01:24:05.813+01:002012-09-11T01:24:05.813+01:00nope. no hum, even when cranked to the max. you mi...nope. no hum, even when cranked to the max. you might try shielding your input and output wires to see if that helps, but i didn't have to in mine.johnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-78839684719726520252012-09-11T00:21:12.060+01:002012-09-11T00:21:12.060+01:00Not even when you turn the volume up? What could b...Not even when you turn the volume up? What could be causing that in mine?Edmund Moonhttps://www.blogger.com/profile/18291786165480743542noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-57790162166199976292012-09-10T18:23:24.061+01:002012-09-10T18:23:24.061+01:00nope. no hum in mine.nope. no hum in mine.johnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-77376317896830494252012-09-10T17:44:32.446+01:002012-09-10T17:44:32.446+01:00Anyone else getting a weird low humm noise from th...Anyone else getting a weird low humm noise from the circuit when it's on? I used 2n5458's and biased per instructions with the drive knobs at noon. Help?Edmund Moonhttps://www.blogger.com/profile/18291786165480743542noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-33315259761992435092012-09-10T16:59:19.372+01:002012-09-10T16:59:19.372+01:00anyone else get this weird low humming noise when ...anyone else get this weird low humming noise when the circuit is engaged? I biased it with 2n5458's with drive 1/2 turned to 12'0clock but still happening<br />Edmund Moonhttps://www.blogger.com/profile/18291786165480743542noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-46208630769284429212012-08-04T05:29:58.141+01:002012-08-04T05:29:58.141+01:00I get the bulk of my stuff from Tayda and I just l...I get the bulk of my stuff from Tayda and I just looked at the site and it says they are Fairchilds. Looking at the unit, it reads "F" and "BB33" which I assume means Fairchild. But the J201's sound fine and I have some 5458's on order, so we'll see.Piltdown Manhttps://www.blogger.com/profile/13069386624600054452noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-63457327754835390062012-08-04T01:25:48.768+01:002012-08-04T01:25:48.768+01:00Do you know what make the 5457's are? I came ...Do you know what make the 5457's are? I came across a datasheet the other day for Central Semiconductors which had a weird GDS pinout, unlike the more usual Fairchild arrangement which I always lay things out for.IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-23588480885128174312012-08-04T01:09:24.976+01:002012-08-04T01:09:24.976+01:00That's weird. Maybe I am getting hiss from so...That's weird. Maybe I am getting hiss from something else. I swear the 5457's went into the same sockets but didn't work. Oh well, it sounds great and I will try the 5458's when they come in. ThanksPiltdown Manhttps://www.blogger.com/profile/13069386624600054452noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-75169560737007136952012-08-03T17:30:39.635+01:002012-08-03T17:30:39.635+01:00mine works with 2n5458's, 2n5457's and J20...mine works with 2n5458's, 2n5457's and J201's, but i just went with the stock 2N5458's since i think that it sounds best with them. J201's are supposed to be very hi gain low noise transistors.johnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62121316775606415312012-08-03T15:25:36.383+01:002012-08-03T15:25:36.383+01:00I got all the weird bits worked out, but it still ...I got all the weird bits worked out, but it still wouldn't work. I was subbing 2N5457's for the 2N5458's and was getting nowhere. I swapped them for J201's and it suddenly started working. And very well, I might add. Should I hold out for the 2N5458's or stick with the J201's? They are a little noisy.Piltdown Manhttps://www.blogger.com/profile/13069386624600054452noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-62858499552919518982012-08-02T15:22:19.539+01:002012-08-02T15:22:19.539+01:00I'm glad to see that this is verified because ...I'm glad to see that this is verified because I am having trouble getting mine to work. I get the the same bypass signal as when it's bypassed except the volume works! But the voltages are correct when I check them. I must have some sort of wire messed up or perhaps a solder bridge that I missed. <br /><br />This is the fun part...Piltdown Manhttps://www.blogger.com/profile/13069386624600054452noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-46932471631610864882012-07-18T18:18:14.447+01:002012-07-18T18:18:14.447+01:00yep. Q1 is supposed to be 9.4-9.6V at the drain. m...yep. Q1 is supposed to be 9.4-9.6V at the drain. mine has plenty of overdrive with both drive A&B maxed.johnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-42832007188212775562012-07-18T17:59:15.680+01:002012-07-18T17:59:15.680+01:00Q1 is permanently attached to the 9V row so you ca...Q1 is permanently attached to the 9V row so you can't affect the drain voltage. If you think Q1 needs tweaking you'll need to swap the 10K source resistor for a trimmer but that's just a buffer stage so should be fine without tweaking.IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22891342637969149092012-07-18T17:42:33.399+01:002012-07-18T17:42:33.399+01:00Hi may i know does the trimmer affect q1? adjusted...Hi may i know does the trimmer affect q1? adjusted both trimmers only seems to affect q2 and q3... my q1 shows 9.4v at Drain. <br /><br />With both drive knob at max the drive is not much. hmmm...muhd85https://www.blogger.com/profile/01980107053855887095noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-2191378295334218382012-07-17T00:00:31.067+01:002012-07-17T00:00:31.067+01:00here's some pics of it:
http://johnkvintagegu...here's some pics of it:<br /><br />http://johnkvintageguitars.homestead.com/Effects/Fuzz-ODs/LiquidSunshine-clone/01-liquidsunshineclone.jpg<br /><br />http://johnkvintageguitars.homestead.com/Effects/Fuzz-ODs/LiquidSunshine-clone/02-liquidsunshineclone.jpg<br /><br />it fit easily in a 1290 enclosure and IMO, it sounds great!johnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-28055703982881745742012-07-16T23:35:38.388+01:002012-07-16T23:35:38.388+01:00BTW, IMO, for bass guitar using a .47uf cap for th...BTW, IMO, for bass guitar using a .47uf cap for the bass boost works a bit better for me, you could also use an on-off-on for that switch and get the additional stock 22nf (less bass boost) setting as well. and after trying it at the 4.75V-5V bias (as per specs) i actually prefer it at 3.28V for Q1 and 3.68V on Q2.johnkhttps://www.blogger.com/profile/00643996045674470081noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-16396138327737504772012-07-16T21:44:45.048+01:002012-07-16T21:44:45.048+01:00Yes please John that would be great, and thanks fo...Yes please John that would be great, and thanks for verifying.IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.com