tag:blogger.com,1999:blog-6847048658257278783.post7883592084080548783..comments2024-03-28T18:53:30.726+00:00Comments on Guitar FX Layouts: Jerry Garcia Tiger PreampIvIarkhttp://www.blogger.com/profile/08416945174853142251noreply@blogger.comBlogger25125tag:blogger.com,1999:blog-6847048658257278783.post-19466243212464772932019-02-16T08:42:49.910+00:002019-02-16T08:42:49.910+00:00You should try to see what happens if you change t...You should try to see what happens if you change the value or jumper it.<br />I'm not sure but it could attenuate a bit of high ends.Elijah-Baleyhttps://www.blogger.com/profile/16374916649117645180noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-82233517793876963382019-02-15T20:14:21.340+00:002019-02-15T20:14:21.340+00:00Anyone know what the purpose is of the 100k resist...Anyone know what the purpose is of the 100k resistor?Anthonyhttps://www.blogger.com/profile/17819000095029091101noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-47675767254438391182018-09-13T16:33:46.597+01:002018-09-13T16:33:46.597+01:00Do you know if there'd be away to by pass the ...Do you know if there'd be away to by pass the preamp in an OBEL configuration? I've a guitar with OBEL and Wald preamp I'd like to hear what it sounds like with and without the preamp. I tried disconnecting the battery but then I get no sound at all. Anonymoushttps://www.blogger.com/profile/03804207412334770894noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-73387243329486437632018-09-13T16:33:23.089+01:002018-09-13T16:33:23.089+01:00Do you know if there'd be away to by pass the ...Do you know if there'd be away to by pass the preamp in an OBEL configuration? I've a guitar with OBEL and Wald preamp I'd like to hear what it sounds like with and without the preamp. I tried disconnecting the battery but then I get no sound at all. Anonymoushttps://www.blogger.com/profile/03804207412334770894noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-24224691988990417252016-04-03T15:44:36.320+01:002016-04-03T15:44:36.320+01:00Is there a way to turn this into a boosted buffer?...Is there a way to turn this into a boosted buffer? Maybe turn one of the grounds into a pot to control the volume? I've been tinkering with it, but haven't come up with a good solution yet... any ideas?geof hancockhttps://www.blogger.com/profile/18237710688339153919noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-9989446490330166272015-10-26T13:34:53.823+00:002015-10-26T13:34:53.823+00:00Thank you!I had thought it would,but figured I'...Thank you!I had thought it would,but figured I'd double check to be sure.Still pretty new to all this.Anonymoushttps://www.blogger.com/profile/17832478364672472993noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-68135777296585579972015-10-26T06:46:51.302+00:002015-10-26T06:46:51.302+00:00It works in an enclosure.It works in an enclosure.Anonymoushttps://www.blogger.com/profile/09359000509320051175noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-47428076153460439922015-10-26T03:04:48.087+00:002015-10-26T03:04:48.087+00:00Is this something that is only to put in a guitar?...Is this something that is only to put in a guitar?<br />Or will it be okay in an enclosure too?Anonymoushttps://www.blogger.com/profile/17832478364672472993noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-21505528944644923942015-06-30T17:01:39.599+01:002015-06-30T17:01:39.599+01:00I built and installed this circuit in a 1978 Fende...I built and installed this circuit in a 1978 Fender Musicmaster guitar. I feeds directly to an onboard effects loop which I also installed. The owner uses 7-9 pedals and it works wonderfully.Anonymoushttps://www.blogger.com/profile/09359000509320051175noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-18829422723014530522015-02-05T23:06:34.540+00:002015-02-05T23:06:34.540+00:00Hi Jeremy, all good points. Most of the guys invol...Hi Jeremy, all good points. Most of the guys involved in the GD signal path seemed to have "super sonic" ears! It must have been something in the water-or Kool-aid. Anyway I took another look at the layout here and it looks like you could put the big poly 2.2u along the top row where the positive side of the electrolytic cap is positioned, and just jog the other leg over a row next to the cut to where the negative side connection is. The pitch of the 400v WIMA .022u's should fit where the low voltage poly caps are, just need to bend 1 leg of the input cap under its body for 1 row. When my next parts arrive I'll build it and post again Pat Fhttps://www.blogger.com/profile/01861710299532504009noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-87898129160847951972015-01-23T00:34:47.161+00:002015-01-23T00:34:47.161+00:00I've heard that, too. That 2µ2 electro will dr...I've heard that, too. That 2µ2 electro will drift eventually, so that's the one to replace with a poly cap. Of course, at that value the poly cap will automatically double the size of the layout. It might be good to consider whether it would be better to replace the electro cap in 25 or so years in order to have a smaller layout.<br /><br />I'm sure that's why John Cutler used the poly cap when he built the circuit. When you're dealing with a player who changes his pickups every couple years because he claims to be able to hear the magnets getting weaker, you want to minimize anything drifting out of spec.Anonymoushttps://www.blogger.com/profile/11874921319455105019noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-22790130034448049092015-01-09T21:46:59.095+00:002015-01-09T21:46:59.095+00:00Hi Jeremy, I too have compared both versions now, ...Hi Jeremy, I too have compared both versions now, and there is not a noticeable difference. I was just reading a thread about "mojo" caps in guitars, and there was some logic in the idea that the larger, high voltage caps may stay true to specs and not drift off value for longer.Pat Fhttps://www.blogger.com/profile/01861710299532504009noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-4663543033647913512014-10-19T23:38:48.151+01:002014-10-19T23:38:48.151+01:00Ebay didn't exist when Doug Irwin built the Ti...Ebay didn't exist when Doug Irwin built the Tiger. Back then, the LF356 was considered the new, hip thing.Hmmm...https://www.blogger.com/profile/09205901773476311681noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-10522434972998716782014-10-11T20:17:57.324+01:002014-10-11T20:17:57.324+01:00I built one with the high voltage caps and one wit...I built one with the high voltage caps and one with lower voltage caps. I couldn't hear any difference whatsoever. My chips seem to be a little noisy, though: I got some hiss. I tried them both in my guitar and got a VERY Garcia-like tone, very sparkly. I went back to the AMZ Super Buffer because of the hiss and because it was a little more Garcia than I wanted.Anonymoushttps://www.blogger.com/profile/11874921319455105019noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-37766004483198113962014-09-30T18:30:57.118+01:002014-09-30T18:30:57.118+01:00I built this and it sounds nice. The original Tige...I built this and it sounds nice. The original Tiger buffer has oversized Caps. The .022u are 400v and the 2.2u is 250v. Is there a sonic advantage to using the bigger caps? The size disadvantage is obvious, but I wondered if there could be a benefit beyond the Mojo factor.Pat Fhttps://www.blogger.com/profile/01861710299532504009noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-58034208356247552922014-07-05T19:15:01.735+01:002014-07-05T19:15:01.735+01:00Excellent, thanks for verifying RossExcellent, thanks for verifying RossIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-83031766096153264612014-07-05T18:15:45.866+01:002014-07-05T18:15:45.866+01:00Tag it. This one's a pretty decent buffer.Tag it. This one's a pretty decent buffer. Rosshttps://www.blogger.com/profile/00308536001054545039noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-29121809891395069522014-04-24T09:29:31.844+01:002014-04-24T09:29:31.844+01:00I know what you mean, the only time I ever order 1...I know what you mean, the only time I ever order 1 or 2 of something is when they're really expensive like the AD797, everything else I get at least 10. I definitely think I've got more than enough opamps to last me for the rest of my life, and possibly the next few generations of my family :o)IvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-19051939971047213982014-04-24T08:55:13.605+01:002014-04-24T08:55:13.605+01:00I have the same affliction. I have so many transi...I have the same affliction. I have so many transistors and ICs that I will probably never use again because I need them for this or that pedal and I know if I buy just what I need then I'll blow one up or find out one is bad or find out the next 10 pedals I want to build need the same thing, etc. so I end up ordering way more than I need. Gah!Bohemian Hhttps://www.blogger.com/profile/09155964862358263643noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-77853549458613669462014-04-24T08:46:54.648+01:002014-04-24T08:46:54.648+01:00I think the TL071 or even the LF741 or whatever wi...I think the TL071 or even the LF741 or whatever will be fine. At unity gain I don't think I could tell the difference between any of them, although I did order some LF356's, just because my OCD kicked in :o) Although the original builder probably only used them because he had a thousand he got cheap on eBayIvIarkhttps://www.blogger.com/profile/08416945174853142251noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-670946241991931602014-04-24T08:36:57.563+01:002014-04-24T08:36:57.563+01:00Oh, I always socket, and I'm definitely going ...Oh, I always socket, and I'm definitely going to to give this a try as soon as I have a project guitar nearly completed (got several close). I just wanted to make sure I was "in the ballpark" on what I was going to test it out with. I get confused... an opamp is an opamp, but then there is this extra stuff like BiFET, JFET, Slew Rate, DiFET, Single Supply, Rail to Rail, FuKET, and shit that makes me start second-guessing myself.<br /><br />Thanks! :)Bohemian Hhttps://www.blogger.com/profile/09155964862358263643noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-80748499611584276812014-04-24T07:46:14.652+01:002014-04-24T07:46:14.652+01:00Socket and try it out. Since it is basically just ...Socket and try it out. Since it is basically just a buffer, i don't think you'll hear much of a difference between any single opamps.<br />+mmirosolhttps://www.blogger.com/profile/02400327798106357876noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-68351410468166230172014-04-24T05:27:34.414+01:002014-04-24T05:27:34.414+01:00Man... that was a lot more nicely formatted before...Man... that was a lot more nicely formatted before I hit "publish" :/Bohemian Hhttps://www.blogger.com/profile/09155964862358263643noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-13063054473586750102014-04-24T05:26:36.474+01:002014-04-24T05:26:36.474+01:00To be polite, since I'm asking for help:
LF35...To be polite, since I'm asking for help:<br /><br />LF356<br />1 Number of Channels (#)<br />10 Total Supply Voltage (Min) (+5V=5, +/-5V=10)<br />36 Total Supply Voltage (Max) (+5V=5, +/-5V=10)<br />5 Iq per channel (Max) (mA)<br />12 Slew Rate (Typ) (V/us)<br />10 Vos (Offset Voltage @ 25C) (Max) (mV)<br />5 Offset Drift (Typ) (uV/C)<br />80 CMRR (Min) (dB)<br />5 GBW (Typ) (MHz)<br />8000 IIB (Max) (pA)<br />12 Vn at 1kHz (Typ) (nV/rtHz)<br />Military Rating<br />0 to 70 Operating Temperature Range (C)<br /><br /><br />TL071 <br />1 Number of Channels (#) <br />7 Total Supply Voltage (Min) (+5V=5, +/-5V=10) <br />36 Total Supply Voltage (Max) (+5V=5, +/-5V=10) <br />3 GBW (Typ) (MHz) <br />13 Slew Rate (Typ) (V/us) <br />70 CMRR (Min) (dB) <br />18 Vn at 1kHz (Typ) (nV/rtHz) <br />10 Vos (Offset Voltage @ 25C) (Max) (mV) <br />200 IIB (Max) (pA) <br />2.5 Iq per channel (Max) (mA) <br />18 Offset Drift (Typ) (uV/C) <br />Military Rating <br />-40 to 85 Operating Temperature Range (C)<br /><br /><br />TL051<br />1 Number of Channels (#)<br />10 Total Supply Voltage (Min) (+5V=5, +/-5V=10)<br />30 Total Supply Voltage (Max) (+5V=5, +/-5V=10)<br />3.1 GBW (Typ) (MHz)<br />20 Slew Rate (Typ) (V/us)<br />75 CMRR (Min) (dB)<br />18 Vn at 1kHz (Typ) (nV/rtHz)<br />1.5 Vos (Offset Voltage @ 25C) (Max) (mV)<br />200 IIB (Max) (pA)<br />3.2 Iq per channel (Max) (mA)<br />8 Offset Drift (Typ) (uV/C)<br />Catalog Rating<br />0 to 70 Operating Temperature Range (C)Bohemian Hhttps://www.blogger.com/profile/09155964862358263643noreply@blogger.comtag:blogger.com,1999:blog-6847048658257278783.post-29749072693683437042014-04-24T05:12:04.433+01:002014-04-24T05:12:04.433+01:00Mark, do you think a TL071 (or maybe even TL051) w...Mark, do you think a TL071 (or maybe even TL051) would work appropriately in this or would it be worth it to chase down some LF356n? <br /><br />I checked the data sheets, and I'm comparing stuff between the LF356n and the TL0*1 chips and I'm all nodding my head when it occurred to me that I had no idea what the hell I was looking at.Bohemian Hhttps://www.blogger.com/profile/09155964862358263643noreply@blogger.com