Questions tagged [guitar-amplifier]
The guitar-amplifier tag has no usage guidance.
74
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Can an audio isolation transformer between a preamplifier and an amplifier cause the amplifier's fuse to blow? [closed]
I'm building a microphone preamplifier. I was having problems with hum (intermittent ground hum when touching the case) and decided to try adding an audio isolation transformer (600 ohm : 600 ohm) ...
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Is the reason for guitar "tone suck", i.e. loss of high end frequencies with impedance mismatching, actually due to high reactance?
When connecting a guitar's output to an input with insufficiently high input impedance, the signal is undesirably filtered, which is referred to as "tone suck". To deal with this, it is ...
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DIY guitar amp cabinet selector switch
Problem statement:
I have 2 guitar amplifiers and I have 2 speaker cabinets that normally connect via speaker cables (1/4" connectors). I would like to create a passive device that lets me ...
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Replace One Centre-Tapped Resistor with Two Resistors
I have just started research and design on a small tube guitar amp and have hit the first of what is probably many uncertainties. The idea is to reuse the transformers, 7C5 power tube and 7Y4 ...
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Switch to handle two inputs and switch between two sets of two outputs (guitar amp send and return switch)
I am looking to build a simple box, for fun, to switch the send and return signals from a guitar amplifier effects loop between two different amplifiers, depending on which amp I am using at the time.
...
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Why am I getting heavy output distortion from a BJT amplifier when driving an 8 ohm load?
Hello electronics professionals and enthusiasts! Software engineer mingling with breadboards and discrete components in his spare time here.
I'm trying to build a simple BJT amplifier for my electric ...
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Power supply transformer replacement
First of all I apologize, I am not an electronics expert, just fairly good at it, but now I am faced with this weird problem that I can't figure out.
I needed to replace a transformer on a power ...
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I need help setting up a guitar speaker jack plate
I have a 1x12 wedge cabinet I'm repurposing into a guitar speaker cab. It has a jack plate with two 1/4" mono jacks. What I'd like to do is reset the jack plate in such a way that it can:
Run ...
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replace 220v transformer into a 110v transformer with same specs [closed]
I am trying to convert my European 220V VOX AD50VT guitar amplifier into 110V to use it in the USA. I plugged it to 110V and it does not work, there's just the master light that comes up but it ...
user351015
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Guitar amp is making bad noise when I plug in a jack only
When I plug in my guitar cable by itself in the amp (without the guitar attached) it makes a bad noise. I changed the cables and the noise is still there in the amp. Also, when I plugged just the jack ...
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Midpoint Adjustment on Complimentary BJT Amplifier
Looking at this whoknowswhat 100w amplifier on eBay. There are two trim pots, one is for bias current, and the other for "midpoint" adjustment. The schematic supplied does not show the ...
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Guitar amplifier emits a continuous beep, which pitch vary depending on "bass" and "gain" knobs. Finding what's wrong in the circuit
I have an old transistor (EDIT: not transistor, but OP, from comments) guitar amp, a Laney Session 45 Reverb. I couldn't find any schematics online unfortunately, it doesn't seem to be a very popular ...
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149
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E-Guitar / Bass amplifier Effects-Loop: Is there a standard for voltage levels & impedances? [duplicate]
Musical instrument amplifiers often have an "FX-loop" with a pair of jacks which can be used to interrupt the default connection between preamp & power amp, to put the preamplified ...
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Is it possible to use CRT tubes for audio amplification?
I was wondering if it's possible for me to use the tubes in an old CRT TV to build an audio amp (specifically a guitar amp). If not, would I be able to salvage something else (like an old radio) to ...
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How to add harmonic distortions to guitar amp? [closed]
I was reading about the carver challenge,(https://www.stereophile.com/content/carver-challenge) and read that he had added a series of potentiometers to one of his amps that had allowed him to ...