Here's a fuzz I have come up with - The Flying Guillotine Fuzz
It's based around Joe Davissons Diode Compression op amp.
But I took the input section and tonestack / output section from a Big Muff.
Hey guys.... so I have a challenge here that I've been trying to do but I'm not so good at this stuff. I want to take this little green wonder circuit... take out the body pot, make the resistance a constant at about half way (whatever that value is) and then add a tone pot... much like an original tubescreamer. that's my first objective. I'll be lucky to get there... but in case you're wondering, my second objective is to add a clipping switch for the green LEDs and 1n914 diodes. if anyone...
I got several schematics, mods and stuff about Tube Screamers... I notice one thing that makes me wonder and I still have no answer for it.
In the TS-808 Schematic there's in the clipping section, a cap and a resistor attached to the feedback loop of the opamp... well.. I saw in two screamer's schematics that it can be connected to the ground or to the Bias Voltage (+4,5V)... what's the difference this produce soundwise?
Could anyone help with an explanation... I really don´t get...
Hi, this is my schem of a LFO built based on a 555 for the tremulus lune, since there was no way I can make it work(The led doesn´t oscillate :? ). As I see, it works, but I'd like a second opinion, specially to correct technical mistakes.
Thanks :D
... and sorry for my bad english :oops:
I (hesitantly) thought I'd throw this out there (is this the right section?)... any suggestions or constructive criticism is welcome (anything I can learn something from).
Bigger version:
Short(ish) demo:
I came up with the above after I tried the Phase 90 - it seems I was one of the unlucky few that ends up with an audible LFO. Modifying the circuit to try and cure that would have meant hacking up the board I'd made. I felt it was easier to start from scratch and try to ensure it...
Okay, so I'm switching a guitar to a stereo output jack (with a pull switch pot to re-assign the neck pickup to tip instead of ring) and I'm building a stereo breakout box that will take a stereo input, buffer each signal with an op amp buffer, and send each one to its own mono output jack.
First question:
In this scenario, is it critical to decouple the pickups? I don't think it is, right? Because each pickup forms its own circuit with its amp. If it was a mono input, splitting into two...
Hey there I've been a reader here for a few months and I love the contribution from members here. I recently started making pedals and I've successfully completed a few which encouraged me to keep doing it, practice and then maybe later work my way up to making amps and stuff.
Anyways, let's get to the point. I like small pedals a lot more than big ones. I know the sound is the crucial thing but looks do have a role in the pedal business. I was wondering if some of you guys could point me to...
I need an fx loop with 2 wet & 1 dry lines to use with bass so I took circuit snipplet from all over the net and came out with this schematic.
It starts with buffer which then split signal into 2 wet & 1 dry.
The wet lines have the polarity reverser as found on splitter blend from ROG.
The 3 signal each has their own vol control before mixed then goes to a JFET buffer at the end.
Could somebody review my schematic below and points out error and/or improvement before I etch the PCB...
Here's an idea I am working on, to use an opamp servo to set a FET drain bias to exactly 4.5V or whatever desired voltage by offset biasing the Gate (Voltage through R5).
Overkill? Absolutely. However, with two or more of these stages used in a design, the set point (Vr) can be varied to adjust the bias of multiple stages simultaneously. Has anyone seen anything like this before? I'm having a difficult time finding info on basic servo circuits.
Hey guys, this is my latest build. A 3 channel guitar preamp. Main features:
- 3 switchable channels (it can be done MIDI compatible);
- switchable cab-simulator
- Separate EQ and Gain/Volume controls for Clean / Crunch-Lead
- uC switching system
Here is a little circuit i lashed together. Thanks to Phil abbot from FSB and SSguitar for the eq circuit and to Gonecat from DIYAUDIO for the tube in and out sections. It sounds great if not a little noisy but its in the prototyping stage atm, jumper cables and shit everywhere LOL. For the B+ Im using the nixie PS that is floating around on this and other sights. Its supplying around 170vdc (it can go much higher) from a 12vdc wall-wart. I had to run a 27k resistor between the +12v supply and...
I really like the sound of the Maestro filter/sample+hold in the sample+hold mode, but have tried breadboarding the circuit at various points over the last few years with a consistent success rate of zero :evil:
I decided to have a go at making something much simpler that could run off 9 volts, and could vaguely imitate something approaching the sound of the FSH. I came across rg keen's pseudo random lfo circuit here , and used it to drive two LEDs in the same fashion used by Ibanez's various...
Nice circuit! Here's what I've tried so out far (pretty basic):
- Added a switchable 4u7 electro to the mosfet's source - There's a nice range of grit with humbuckers, but I could do with more for my weedy single-coils.
- Replaced the 8k2 output resistor with a 50kB pot and upped the cap-to-ground to 4n7 from the original 2n2 to tame the treble a bit at high gain settings/with the gain boost engaged/with a bjt boost stage infront
- Tried (but abandoned) clipping diodes on the end
I have found in my stuff at home a vintage TDA2108 chip. I didn't know what it was, but appears to be some sort of MN3005 from what I read on the internet?
Do you have more informations? I think it came from an italian organ (and I guess it was used for the chorus then?)
What analog delay or pedal can I build based on this chip? I'd like to use it but can't find a lot of info about it.
Needing a bit of advice. Friend of mine plays fiddle in a Ceilidh band (Scottish country dance music band), He knows that I sometimes build pedals and asked If I could make a killswitch for him that he can operate with his foot. Currently there isn't really anything on the market that suits his needs as he uses XLR cables from the violin to either a PA or phantom power box (I'm not sure which comes first or if they are built in). Here is the current spec list I have drawn up:-
:?: ive been meaning to remember to post this question online at the diy guitar effects site. my question is,why are there limited info on the internet. what I mean is the vintage diy guitar effects schematics and circuits have stayed the same for years.companies and music techs have designed hundreds or thousands of guitar effects designs since the mid 60s.why aren't they ALL online by now.I know it supposed to depend on people who are nice enough to upload obsolete music electronics...
i'm sending layout + schematics of orginal tube version still need a bat85 on fet legs, same like in AMT designs
If someone have time to check or have any ideas please help :)
Hey fellas. I always wanted the E530 lead tone, but time will pass until I get skilled enough to play with tubes. Fortunately, J0K3RX (big thanks to you!) posted some great JFet emulations of great amps. So I thought - why not give the method a try?
Here's the schematic I used. Not sure if it's correct, but it likely is. Found it on google graphics.
get_image.php.gif
And here's what I drew in Eagle CAD.
e530emu.sch
e530emu.png
So I did almost nothing. :mrgreen: Added only the diodes, 5th...
Hi guys I have one question about the best way to build various pedals, and I see some ideas like build 5 , 6 effects pedals in one chassis box like a multi effects or in separated pedals?
Some circuits like MXR dist +, phase 45 work better in batteries, other work better with power supply. How make its work in better way to optimize the pedal board. Thanks.
The Ant Driver is an SMD opamp buffer that fits in a 1/4 jack on your guitar cable.
The general idea is to buffer the signal right as it comes out of the guitar to get a strong, low-impedance signal through that first run of cable.
It's powered by using a mic (2-conductor) cable that takes the voltage from the first pedal in the chain.
Here's a link to my full build report
Here's a link to the build document which has in it links to order the board shared at OSHpark and a Mouser BOM code to...
Hi, just finished laying out this Bassballs stripboard.
I used this schem:
This is my first stripboard using ICs so I am not sure if I got it quite right.
The first stripboard pedal that I laid out took me a few days- this one seemed easier and only kept me amused for a few hours.
I deliberately wanted to have all the offboard wiring on one side which makes it easier to work on later on IMO
- if it desperately needed to be smaller that would be the place to find some shrinkage.
I have some questions regarding Compression Stompboxes;
a) What are the pros and cons of the following:
- Tube Compressor
- Optical Compressor
- Germanium Diode Compressor
.........those links are mere examples, please don't fix your mind on them, I need a more general opinion
b) How does a Guitar Compressor compare to a Bass Compressor (a few case studies would really come in handy)?
- I want to transform some Guitar Compressors into Bass Pedals......
no idea how this works or why... but if you parallel the bat41 at d4 on the board with a 1n34a oriented the same, it cuts out most of the ocean with a big muff pi.
you can still get all the same sounds out of it, but without the noise. seriously. try this and let me know if it works for you!!
did it on a reissue nyc bmp. made an astounding differnce.
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