I adapted the circuit to run with the current production LM13700 (or LM13600). Lacking any adjustment features, it was not a 1:1 replacement, but it is easy enough to upgrade existing designs. I completely redrew the whole schematic in order to understand the function blocks and I explain those in detail.
This not only helped me to understand what was going on, but also where to make changes for the LM13x00. It is to be hoped, that the explanations will help other designers when they try to...
Regulars here will know that I make my home at D*yS*ompboxes. However, I have a new made-to-order product to offer that I think will have wide appeal, so I'm making a guest appearance.
I'm sure you have seen various enhanced breadboard arrangements for prototyping, some cobbled and some very sophisticated and manufactured. The IdeaBox is a little of both. My ins-bear-ation was to get made a bracket that can support either pots or connectors and serve as linchpin for a variety of experimental...
I've wanted to build an expression pedal-controlled LPF for a while now, and I came across an adaptation of the EFM wildcat filter by nick d over at DIYSB, which is similar to the Korg MS20 type filter -
I got rid of the LFOs and tinkered with some values so it now has just frequency range, resonance, and volume pots: I'm using a EV-5 expression pedal for the filter sweep, which works well as it has a 50k trimmer so you can set the lowest point of the LPF sweep to totally off (i.e. cut-off...
I developed a little mod for the Line 6 DL4 delay unit that converts 1/4 notes to dotted 1/8th notes and have been selling them for several months. The kit uses an ATtiny85 programmed using the Arduino platform to manipulate some circuitry inside the DL4. The mod also has a built in double preset feature so you can get rid of your expression pedal if you want. I've posted some info on my website here: . I've posted the schematic, the source code, and an installation up online so the...
Well... I play the acoustic guitar and everytime that i play with the band i can't hear myself through the mix or even the monitors.
So... I would like to make a simple unit that allows me to split my original guitar signal in two equal signals. One will go directly to the mixer(OUT2) and the other(A) will go to a MXR headphone amplifier circuit(B) so i can hear myself through personal headphones...
The idea is to have this unit on all the time by a 9v...
I was asked today for a circuit for a simple headphone amp. The LM386 does most of the work for you and is very cheap. It's not the lowest noise amplifier IC, but we're only asking for low gain so it's acceptable. It has a lowpass filter after the volume control (prevents radio interference and excessive shrillness), a highpass filter made of the input capacitor and the volume pot resistance. It's not far from the datasheet circuit!
Here's the circuit - Vero and PCB to follow:
Headphone...
:applause: New layout i made and posted, just to be helpful to anyone building this kind of circuits out there. Also if anyone has some suggestions and questions, of course they're very welcome. This one is finished, made the circuit and did the demo of it.
:popcorn: And here's the demo with background music and soloing:
Hello, everyone! I'm new here, and I asked a question about this reverb unit as my first post. I was pleasantly surprised with how helpful people are here, so I want to at least attempt to return the favor! For some reason I really like the sound of this reverb, so I took the schematic that's available over at the BYOC website and turned it into a veroboard layout. Here's the schematic:
And here's what I came up with:
I have very little experience putting these together, so some aspects...
I have built a Green Russian BMP and an Engineers Thumb two in one box. I was wondering if there is a way to choose which effect comes first in the signal chain? Like wiring a toggle switch for the input wires? Am I even making sense? Right now I have the comp first, but I think the sound he is after would be the other way around. Is there a way to wire it to switch between the two effects?
I've built a few ff pedals, I've included a bias pot on the outside. I think I used a linear 10k, maybe 5k, and just hooked it up without too much thought.
I'm just wondering, what's the general consensus on how these knobs should work?
I'd say counter clockwise should get more spirit nt eh sky, dry it out for warm days, and clockwise should get more mushy, use this for hotter days.
I understand that to be counter clock wise lessens the overall r value on the collector?
I'm new to this forum and relatively unexperienced in stompbox design, so please let me know the magnitude of my naivety if I'm doing something wrong.
I basically was wanting to know if the following design would work for creating a somewhat functional spring reverb unit.
I was planning on taking the dry signal and running it through this preamp circuit to drive the reverb tank. I wanted to partially bypass R2 with an Electrolytic Cap with a Pot between the cap and GND.
That is my zendrive clone. Kit by Uwe
The kit comes with AD712.
I heard that Lovepedal are not sanding the IC chip and that is NE5532P.
So I decided to give it a go. Here is the result. I've recorded a small sample on my jamman and after that a ran it through the Zendrive clone while changing the settings and recorded it on my comp.
Let me know what you think. I cannot believe my ears anymore. Too afraid I might be biased.
I have been mulling over the idea of a fuzz pedal that would create(convert) other waveforms besides a square wave, most notably triangle and sawtooth. Has anyone done an experiment such as this before? I was thinking maybe an integrator circuit using a single op amp to get the triangle conversion. I have seen a few circuits for sawtooth conversion but, not many(really none) in regards to the triangle waveform. Any thoughts/ideas would be much appreciated.
This thread inspired me to try out a simplified version of the Cornish G2. After messing with it on the breadboard for a few days, I settled on the schem below:
Basic G2 mods_schem_nocentelli_v2.jpg
I lowered the BC caps a little, changed the tone pot from a voltage divider affair to a series resistance filter control like in a rat, got rid of the electro coupling caps and put in smaller values, and used plain old 1N4148 diodes. I'm pretty sure it sounds nothing like a G2 any more, but I...
is your tone....... limp??? instead of a raging woodie, got a semi mongrel?
we can help
yeah. new fuzzy goodness.
can't redo it, the fuzz has gone off to my bro Johnny Maggi.... but this should give ya an idea.
the audio is kinda distorted, which should give you an idea how loud this little fucker is.
it is literally PUNISHING the kustom amp i'm playing thru ;)
perf/schematic thingy attached
Semi Woodie Overdrive, gif.png
fwiw, you can leave the trimmer out probably. breadboard, and...
SO I am working up a Vox Tonebender based effect running standard 2N4401s and a 2N3904 for Number 3 slot and feeding that into an Octave stage to the back end using a LM386, small transformer and a pair of diodes to rectify to signal...
Anyone ever brewed something like this up?
I got the Tonebender finished last night, it is isn't as hot of a fuzz as I was expecting after my Fuzzrite, but it is different...
So tonight, I hope to cook up the octave stage to hook to the backend and how it...
question: i've been tinkering with my old Boss NS2 Noise Suppressor. i'm thinking of putting it permanently on my pedalboard, underneath the top floor , so it wouldn't use space that i could use for other stompboxes. the idea is leaving it on permanently with a minimal threshold setting, so i would keep sustain but when the strings are muted, single-coil hum would be cancelled with clean sound and certainly when using a lot of gain (which amplifies the hum).
Hello, I'm new here.
I need your help.
I made a Tri Vibe with Solderman's 1590A layout....at universal PCB.
I can get the sound, but the sound is not normal.
The vibe sound itself is normal. Toggle mode is also operate.
But the volume is very low...
Only the Swirl mode has normal volume.(the 47K mode)
One peculiarity symptom is happened at the Swirl mode.
The Swirl mode has normal volume, but when I switch it other mode and back to Swirl mode, the volume is very low, like other modes.
But...
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