onboard guitar distortion

This is great, btw It is like having 4 of the most famous Overdrive Pedal & Tube Amp Tones, but without the "tap dancing" and tripping over cables (not to mention, cable noise). The Ge diodes I use are all from my stash that I purchased in the early to mid 70’s from small electronic suppliers that were going out of business. I’m definitely going to check out a Ge version once I dig myself out from this mountain of crap soon. The first one is based on the one that includes a switch to turn it on FULL. Thanks a lot for the help. Loopocalypse Day 17 (of 17): “Ladies and Gentlemen We Are Floating in Space.”. With active effects, you can boost the signal to allow diodes with higher threshold voltages to work. That is why guitarists often speak of distortion pedals offering more or less ‘compression’. For the life of me, I CANNOT get the diode distortion to work :cuss: (indicating that I need to do more research into how diodes make distortion and whether or not I actually did buy the right kind from Micro Center or if I need to go shopping again…and don’t ask what I bought, the package got lost and I have no idea…Hi, I’m a noob! 168 Hz, C = 3.8 nF (3800 pF, 0.0038 uF) It’s an ambitious franken-project. But Terry confirms with facts what I’d have said based on a vague hunch: You’d get different tones from the diodes with more output (plus the basic tonal difference relative to parallel), but it wouldn’t mean an increase in distortion volume. Whichever combination has the lower sum of forward voltages is the quietest. favorite this post Feb 5 Original vintage dod fx10 preamp pedal $60 (Westland) hide this posting restore restore this posting. has 4 distortion sounds including AC-30, Overdrive Twin, Marshall Lead, and Mega Overdrive). But a .002uF and a 500k pot work great for me. But you can definitely get a similar effect using a pair of low-voltage Schottky diodes like these or these. In the future, I’ll experiment with other pot values — or more likely, just attach the diodes to a SPST switch and consider it an all-or-nothing effect. Every octave that you go up doubles the frequency. . I won’t go so far as to say “tube” tone. Anyway, the fundamental frequency of bass low E is 42 Hz (cycles per second). The distortion drop isn’t going to be a huge thing for me, as most of my playing is for studio purposes anyway :thumbup: I’m including a picture of the bass, alongside the components I bought, for anyone interested in what I’m working with. $45. What should I change to make a floor pedal version of it? With a diode and the weak signal from passive pickups, we need to select a diode type or material with a forward bias that lies below the output voltage of the pickups. Traditionally, to distort an audio signal, a powered device is used to boost, or "overdrive" the original signal. The Multi Drive Circuit runs on a single 9 volt battery, battery life is excellent, and the entire range of distortion sounds is adjustable via an internal level trimpot. I’ve never used Shottky diodes much in audio, my only experience with them was in chemistry instrumentation. I actually ended up deciding that the diagram in the link I gave was crap, and applied some recently attained knowledge of the basics to figure out how to get the two components to work that do currently work. It’s a Dean Edge. $24.99 . I was curious about having this turned on and running through the buffer(to make up for the volume drop) then into either the distortion or the rangemaster. Trying this one in a bass. 168 Hz, C = 1.9 nF (1900 pF, 0.0019 uF) I’d already done the ptb, and pushing for more extreme cap values in both directions I was in love with the results. Ok, so I’m headed back to the electronics store to see if I can get the right diode (I’m betting I got the wrong kind). I’ll get back to researching to see what it’ll take to get this to work, and post the results here. For the first version, It is wired in place of the capacitor on the tone pot. I think the dual switching you propose SHOULD be doable with the right multi-pole switch, but it would involve some pickup selector wiring wizardry that I’m a little to groggy to contemplate. Ive tried this whilst messing about with these cicuits and it seems to sound better just using a single diode. I’ve spent hours trying to get it to work and I’m not sure if it’s my lack of soldering skills or bad model. But these aren’t specialized guitar parts — you can get everything you need from any electronics supplier. I’m watching this project with interest! I am happy to explain how these work or help you figure out how to select component values, if you like. Basically I have a two single coil pickup bass that I put together with one volume control but no tone control- instead it has a four way selector that chooses each of the pickups individually and has the other two options to provide either parallel or series connection, PS: On the other hand, why not just plug in to a drive/distortion pedal? distortion pedals that provide switching for different diode types do not include any gain normalization to drive each diode type to the same degree of clipping. I’m looking to do this with a couple Schottky diodes on a PJ bass setup with 2 vols and 1 tone. Without the 0.1 uF cap switched in, the frequencies will be accurate. Could you please explain how this works? Glued In Setneck ST/TE Style Neck/Body assembly, Bostac Brand USA Designed Roadie Flashlights, Best Value! Actually a pair of back to back Schottky diodes clips at around 400 to 500mV peak to peak. Onboard Passive Distortion Mod. I have an acoustic guitar I recently refinished and put a piezo and preamp into. I’d really like to be able to have an acoustic guitar with some grit in it , I don’t think that’s likely to work with a piezo, Jack, though you might get interesting results if you had a magnetic soundhole pickup. Greetings! The capacitor and ground should be coming down from the wire between RESISTOR and output signal. will work in almost any tube amp that has a reverb transformer. Worth a try! Choosing the perfect guitar is a big decision. You may want to fit a resistor in series with the diodes (maybe 1K, although the pre-amp may already have an output isolation resistor of anything between 470 ohms and 10K to stop instability when loaded by instrument cable capacitance) and take the output between signal ground and the junction of the two diodes and the resistor. It's only because steel guitar is not very popular right now among young people. Joe used a 1M pot and an 0.0022uf for the bass. That’s a pretty interesting idea. Wiring It Up. So I’m aware that the cap alone won’t do the synth sound. Totally! Notes above this will roll off at (decrease) 6 dB per octave increase in frequency. Would you be able to post an updated drawing of your existing circuit showing the component values, and/or resistor color codes? From what I can tell, there’s no ground connection to your tone circuits. No, the synth sound comes from the combination of the capacitors and the distortion on my amp (a Line 6 Spider III’s insane channel…the 0.1uf cap through that really sounds like a square wave synth, I was quite surprised). With high output pickups in series you might get a result you like with Germanium or even Silicon. . OUR BEST- Straight/Right Angle Lo-Impedance Silver Cable- made in UK, Heavy Duty noiseless Upgrade Cable 90 Degree/Straight Monster plugs, Auto-Switching Guitar Cable- Noiseless- Anodized ends Brass Tip, Heavy Duty Speaker Cables - 16 Gauge Wire. Keep in mind this will just be an approximation of what you would achieve with an RC bandpass filter, but it would help you determine whether it’s even worth the effort. LEDs won’t work at all. So that’s what I’m going for, if that helps to clarify. Hi Impedance Microphone Cables- heavy Duty Braided Shield. This arrangement will give you three sounds: Onboard Multi-Distortion Circuit- Hot Rodded tone! I just want to play some nice low-fi metal on it already :/. As coincidence would have it, I too am currently in the UK. Onboard effects have earned a reputation as cheesy, low-budget products. Thanks for the info on the frequencies of specific caps. . GROUND. https://youtu.be/AiHvrrB8Q5k – a quick youtube vid shot on an iPhone 5C of me sloppily playing one handed bass lines through the insane channel of the amp, with the 0.1uf capacitor switched on…not set up to be synthy here, more of a bass lead sound. The only resister in here as of right now is the volume pot, and I’m sending the 0.1uf capacitor to ground (which wasn’t part of the drawing on the original link I posted, which is one reason it didn’t work. The bass pot needs to be a high value and the capacitor quite small.

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