Questions tagged [guitar-pedal]

Electronics circuits design for guitar pedals

Filter by
Sorted by
Tagged with
1
vote
0answers
255 views

How to make a guitar amp switcher?

So I'm trying to build a guitar amp switcher (and I don't really know what I'm doing =)). The idea is that guitar out is connected to X4 jack and then switched to either X1, X2 or X3 jack, which ...
1
vote
1answer
93 views

Sound amplification

A few months ago I built myself a cigarbox guitar. I built all myself, including the pickup and I have wired it with a volume potentiometer and a jack output. It works well but I have to use a pedal ...
1
vote
0answers
600 views

How to calculate voltages on guitar fuzz circuit with pnp and npn transistors?

I have built this circuit on a veroboard, and it seems to me that it has been wired correctly. I do however get a very low output from the circuit, approx 1/2 to 1/3 of the input signal. I reckon that ...
0
votes
3answers
960 views

Why are two diodes used here?

I'm following the wiring diagram for a digitech fs3x guitar pedal footswitch. For the third SPST switch, it's wired from the other two switches connected by 2 diodes, both in the same direction. Can ...
0
votes
3answers
478 views

How to get +6V and -6V out of 12V PSU [duplicate]

I am designing a guitar pedal using OpAmps, and i need to feed them with +6V and -6V (beucase the musical signal is senoidal centered in 0V). I need to use a 12V DC PSU for the pedal, and i need to ...
0
votes
2answers
95 views

Increasing diode clipping influence

I'm working on a guitar pedal distortion circuit and I've been experimenting with introducing diode clipping into the signal. My question is, how can I increase the influence this diode clipping has ...
0
votes
1answer
92 views

What sort of switch to swap the order of two signal processors in series

I'm building a guitar effects processor which is a 2-in-1 effect. Basically they're two separate circuits I've already built on perfboard which I want to put in the same box. I haven't decided which ...
0
votes
3answers
1k views

How can I test guitar effects box without a guitar?

I want to play around with guitar effects circuits on a breadboard, but I don't have a guitar. How can I test my circuits without a guitar?
0
votes
3answers
2k views

Running preamp tube filament on 5v?

Is it safe and not harmful to run a preamp tube filaments at 5v? The tube is ECC85. I built a tube preamp in a DIY portable guitar amp. It's very similar to Matsumins valvecaster with a few slight ...
0
votes
2answers
167 views

What does this RC network do in this audio transformer output stage?

This is a relatively well known ABY circuit available on the internet. CLICK HERE, REMOVED IMAGE FOR COPYRIGHT REASONS I have two questions about this circuit : 1) What does the RC network (in the ...
0
votes
1answer
277 views

Do I need to decouple an LM386 if it is run from a battery? [duplicate]

What I would like to do is to put an LM386 in my bass guitar so that I can plug my headphones directly into it for practice. The LM386 was my first choice because it can run off of a 9V battery and ...
0
votes
1answer
944 views

LM386 noise when using 5v power supply

I'm using LM386 with my guitar and currently I power it with 9v battery but now I want to switch to 5v power supply because I don't want to use a battery. I want to use a 5v usb wall charger + ...
0
votes
4answers
3k views

Making a Distortion Pedal

I was breadboarding a pedal for my guitar using LM386. I read that as long as the gain is too large, the output signal is clipped to produce a distortion effect. So I simply tune up gain pot between ...
0
votes
1answer
198 views

Does anyone know how the Boss Metalzone sweepable mids affect the bandpass?

https://electricdruid.net/boss-mt-2-metal-zone-pedal-analysis/ https://sound-au.com/project150.htm Like in the original question - I'm struggling to understand the relationship between the op-amp on ...
0
votes
1answer
797 views

Kill Switch schematic

I want to make a kill-switch pedal with on/off LEDs for my guitar. I tested a simple schematic but every time I ground the circuit like the schematic i put below i get an error: voltage source/...
0
votes
2answers
546 views

Female mono jack connector 6.3mm

I'm building a DIY pedal effect for my electric guitar and I have to connect the input and output jack connector, but I don't know how to do it. The connectors have 3 pins, one is the tip which it is ...
0
votes
3answers
496 views

Voltage gated switch issues for audio application (guitar pedal)

So i'm a newbie, and with the assistance of my A-Level in electronics step brother we're trying to make a tremolo pedal for guitar. The concept is that an opamp (powered by ±9v) is used as a square ...
0
votes
3answers
12k views

Impedance matching for a guitar pedal

So it's me working on a pedal again. I would like to add some equalizer effects on the pedal and found a fascinating circuit "Smash Drive": As far as I know, maximum power with lowest effect is ...
0
votes
1answer
873 views

Transistor switching noise problem (Guitar pedal idea troubleshooting)

Have a simple circuit : i want to create a gated effect that cuts signal in and out .. it works but i can hear the switching sound of square wave generated by arduino through my amp speaker .. (...
0
votes
2answers
36 views

Feedback Loop Filters?

In the pictured schematic, is there a band pass filter in place? I’m having trouble understanding the function of R4, R6, C3 & C4. Any help or resources would be appreciated.
0
votes
1answer
99 views

Reducing the number of expensive capacitors in an audio opamp circuit

I'm designing a guitar effect (simple booster) which uses a CD4053 cmos switch as outlined here (http://www.geofex.com/Article_Folders/cd4053/cd4053.htm) As you can see from the second diagram, RG ...
0
votes
1answer
69 views

Why Does the Input Voltage Drop When a Linear Regulator is Added as Load

Why does adding a linear regulator to this circuit cause the input voltage (V_c) to drop? The 9V input coming in is regulated. The voltage measured at the branch between D5 and R22 is ~8.7 V, so it ...
0
votes
1answer
262 views

12AX7 Valve Overdrive/Distortion Effect Pedal

I'm following the schematic below using the recommendations plus a couple of extra LEDs. With the footswitch in the enabled position, I'm not getting any sound. In the bypass position, the input and ...
0
votes
1answer
33 views

Advice on power section circuit

I'm designing a power section for my guitar pedal circuit that will supply power to my pedal using either a 9V power supply or a 9V battery. I'm using a switched barrel jack but I'm not sure if I have ...
0
votes
1answer
74 views

Powering up second LM386N results in screaming squeal

So I'm definitely a newcomer in the audio electronics realm but I've been really digging into circuits and experimenting with sounds. I've been focusing alot of time working through examples that use ...
0
votes
1answer
135 views

How to measure the output impedance of a valve preamp?

I was trying to measure the output impedance of a DIY preamp for the past couple of days without any luck. Each time, I got to the same result of around 3K3 ohm, which is unbelievably low. This is ...
0
votes
2answers
282 views

Ticking noise from guitar pedal attempt

I am working on a tremolo guitar pedal circuit. A tremolo pedal basically attenuates the guitar signal using a pattern. Most tremolos use a combination of LEDs and LDRs to do this, but since I do not ...
0
votes
1answer
89 views

Can I use a capacitor which has 275v +-10% tolerance in a 9V circuit?

I am trying to get parts for a circuit i want to make and I'm very new at making circuits. As a result i'm unsure if i can use a 150nF capacitor with 275v+-10% tolerance in the following circuit or ...
0
votes
1answer
130 views

Guitar Dual Volume Control Not Working Correctly

I'm not sure if this is the correct place to ask this, please notify me if there is a better place. I have just created my first guitar pedal and thought i would go simple with a basic passive ...
0
votes
1answer
386 views

Connecting a DIY guitar pedal to a pedalboards power supply

I am new to electronics and I am trying to build a DIY Fuzz Pedal. Before I construct it, I am trying to figure out how to use my pedal board's power supply with it instead of using a 9 volt battery. ...
0
votes
1answer
231 views

Guitar pedal effect voltage problem

I'm building a big muff pi, here it is my schematic : I also made the PCB with smd components, and all the connections seem to be correct. I've plugged in the guitar but nothing happened, no sound at ...
0
votes
1answer
884 views

Will this circuit (for a guitar effects pedal) work?

I am a newbie at electronics and am trying to make a fuzz/distortion pedal. This is a schematic I have made My understanding is that the more resistance the more gain so there is a minimum of 100 KΩ ...
0
votes
2answers
198 views

rotary encoder, got a 20ppr but need more like 200 ppr [closed]

I'm a tinkerer who is attempting to turn a guitar pedal into a remote tempo control for a drum machine, which uses a rotary encoder. In place of the potentiometer in the guitar pedal, I have put in a ...
0
votes
1answer
43 views

Switching polarised capacitors in a guitar effects pedal

I'm building a basic guitar distortion pedal, the Two-Transistor Fuzztone from the book Snip, Burn, Solder, Shred. I want to add a multi-throw rotary switch to select between input capacitors, and so ...
0
votes
1answer
15 views

Can I use a buffer on my bias voltage net?

I'm a french stompbox / bass guitar pedal hobbyist, probably very bad at designing them. I've been thinking about bias voltage nets for some time, and how inefficient they sometimes are. I've studied ...
0
votes
0answers
73 views

12-15V to 9V power supply required to power audio equipment

I have a 12-0-12 transformer with output after filtering 15-16V. It's for audio equipment uses. I want to power a guitar pedal with 9V. I tried L7809 but it's making a whistling noise, so I tried ...
0
votes
1answer
57 views

Basic circuit to turn on LED when input detects signal (for guitar)

I'm looking for a basic circuit snipping which can either turn on an LED or give a positive voltage when input signal from a guitar is detected. Basically, I have an existing circuit where an effect (...
0
votes
1answer
254 views

MOSFET analog switch, Transmission Gate, Bilateral switch circuit questions

Below is an LTSpice simulation of two attempts at a Mosfet bilateral switch or 'transmission gate'. The plot shows the switch (onoff) going from 0 to 5v (in blue) and a sine wave audio signal being ...
0
votes
1answer
198 views

EHX LPB1 circuit not working

I am very new to making circuits and have tried to make an EHX LPB1 circuit: When powered and plugged in, the 9v battery overheats and all I can hear in my amplifier is static noises and no output. ...
0
votes
0answers
165 views

Sallen Key filter for audio applications (guitar)

I am building a custom guitar effects pedal. This is a digital pedal where the microcontroller handles all the effects. The guitar signal enters the silicon domain through the ADCs , the effect is ...
0
votes
0answers
305 views

Unity Gain Clipping Circuit

Please see the image below: This is an idea for a unity gain clipping circuit to be used in a guitar effects unit as a 'distortion' pedal. Some percentage of a peak detector output voltage feeds ...
0
votes
1answer
42 views

How to 'simulate' an input device?

I made a diy guitar amplifier with two seperate amplifiers. When potentiometer is raised something strange and annoying begins - various whispers, noises and reacts really strange. HOWEVER this never ...
0
votes
1answer
519 views

Identifying a broken Rotary Encoder on guitar foot pedal

I have a guitar foot pedal, "EHX Stereo Memory Man with Hazarai", with a rotary encoder that broke off. Here is a picture of the knob in question: Also, here is a picture of the circuit board, ...
-1
votes
4answers
530 views

How does the power switch of an active noise canceling headphone work? [closed]

I have a noise cancelling headphone that still works as a passive headphone when turned off, even with the battery removed. How does this work? In my mind noise cancelling is basically adding ...
-1
votes
1answer
3k views

Can I plug a 12v DC in to a 9v Pedal? [closed]

pretty much as the title goes.. is it okay to plug an 12v DC power supply to 9v pedal? Power Supply >> Voodoo Lab ISO-5's Manual for reference Pedal >> ADA GCS-5's Manual for reference p.s deeply ...

1
2